Commit Graph

20416 Commits

Author SHA1 Message Date
Randy Dunlap
53471121a8 documentation: Move power-related files to Documentation/power/
Move 00-INDEX entries to power/00-INDEX (and add entry for
pm_qos_interface.txt).

Update references to moved filenames.

Fix some trailing whitespace.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-03-12 18:10:51 -04:00
Ralf Baechle
69e634f1e2 [MIPS] Clocksource: Only install r4k counter as clocksource if present.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:42 +00:00
Ralf Baechle
131b02c459 [MIPS] Delete leftovers of old pcspeaker support.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:42 +00:00
Thomas Bogendoerfer
e790a46429 [MIPS] BCM1480: Init pci controller io_map_base
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:42 +00:00
Ralf Baechle
41d1f19a31 [MIPS] Yosemite: Fix a few more section reference bugs.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:42 +00:00
Ralf Baechle
234fcd1484 [MIPS] Fix loads of section missmatches
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:41 +00:00
Ralf Baechle
4177017d5b [MIPS] Export __ucmpdi2 to modules.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:41 +00:00
Thiemo Seufer
a7c2996e41 [MIPS] Fix typo in comment
We support now other page sizes as well.

Signed-off-by: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:41 +00:00
Adrian Bunk
de0c16985d [MIPS] Use KBUILD_DEFCONFIG
With KBUILD_DEFCONFIG we don't have to ship a second copy of ip22_defconfig.

Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:41 +00:00
Ralf Baechle
0f87358587 [MIPS] Allow 48Hz to be selected if CONFIG_SYS_SUPPORTS_ARBIT_HZ is set.
This allows a 48Hz clock to be selected on Malta and other systems.  Note
this not normally a sensible option as it results in rather high latencies
for some kernel stuff.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:40 +00:00
Chris Dearman
1f5826bd0e [MIPS] Added missing cases for rdhwr emulation
Some of these are architecturally required for R2 processors so lets try
to be bit closer to the real thing.  This also provides access to the
CPU cycle timer, even on multiprocessors.  In that aspect its currently
bug compatible to what would happen on a R2-based SMP.

Signed-off-by: Chris Dearman <chris@mips.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:40 +00:00
Wolfgang Ocker
0ec734c2b8 [MIPS] Alchemy: Fix ids in Alchemy db dma device table
0 is a valid device id (DSCR_CMD0_UART0_TX), so we can't use it to mark
an empty entry in the device table. Use ~0 instead and search for id ~0
when looking for a free entry.

Signed-off-by: Wolfgang Ocker <weo@reccoware.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2008-03-12 14:14:40 +00:00
Paul Mackerras
9cf7f7fac8 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge 2008-03-12 17:13:57 +11:00
Thomas Gleixner
985a34bd75 x86: remove quicklists
quicklists cause a serious memory leak on 32-bit x86,
as documented at:

  http://bugzilla.kernel.org/show_bug.cgi?id=9991

the reason is that the quicklist pool is a special-purpose
cache that grows out of proportion. It is not accounted for
anywhere and users have no way to even realize that it's
the quicklists that are causing RAM usage spikes. It was
supposed to be a relatively small pool, but as demonstrated
by KOSAKI Motohiro, they can grow as large as:

  Quicklists:    1194304 kB

given how much trouble this code has caused historically,
and given that Andrew objected to its introduction on x86
(years ago), the best option at this point is to remove them.

[ any performance benefits of caching constructed pgds should
  be implemented in a more generic way (possibly within the page
  allocator), while still allowing constructed pages to be
  allocated by other workloads. ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-11 17:11:55 +01:00
Roland McGrath
40f0933d51 x86: ia32 syscall restart fix
The code to restart syscalls after signals depends on checking for a
negative orig_ax, and for particular negative -ERESTART* values in ax.
These fields are 64 bits and for a 32-bit task they get zero-extended.
The syscall restart behavior is lost, a regression from a native 32-bit
kernel and from 64-bit tasks' behavior.

This patch fixes the problem by doing sign-extension where it matters.

For orig_ax, the only time the value should be -1 but winds up as
0x0ffffffff is via a 32-bit ptrace call. So the patch changes ptrace to
sign-extend the 32-bit orig_eax value when it's stored; it doesn't
change the checks on orig_ax, though it uses the new current_syscall()
inline to better document the subtle importance of the used of
signedness there.

The ax value is stored a lot of ways and it seems hard to get them all
sign-extended at their origins. So for that, we use the
current_syscall_ret() to sign-extend it only for 32-bit tasks at the
time of the -ERESTART* comparisons.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-11 17:11:54 +01:00
Ingo Molnar
9a46d7e5b6 x86: ioremap, remove WARN_ON()
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-11 17:11:54 +01:00
Jeremy Kerr
c368392a99 [POWERPC] spufs: fix rescheduling of non-runnable contexts
At present, we can hit the BUG_ON in __spu_update_sched_info by reading
the regs file of a context between two calls to spu_run. The
spu_release_saved called by spufs_regs_read() is resulting in the (now
non-runnable) context being placed back on the run queue, so the next
call to spu_run ends up in the bug condition.

This change uses the SPU_SCHED_SPU_RUN flag to only reschedule a context
if it's still in spu_run().

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-03-11 12:46:18 +11:00
Jeremy Kerr
ce7c191bca [POWERPC] spufs: don't (ab)use SCHED_IDLE
commit 4ef11014 introduced a usage of SCHED_IDLE to detect when
a context is within spu_run.

Instead of SCHED_IDLE (which has other meaning), add a flag to
sched_flags to tell if a context should be running.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-03-11 12:28:02 +11:00
Ingo Molnar
f5dbb55b99 fix BIOS PCI config cycle buglet causing ACPI boot regression
I figured out another ACPI related regression today.

randconfig testing triggered an early boot-time hang on a laptop of mine
(32-bit x86, config attached) - the screen was scrolling ACPI AML
exceptions [with no serial port and no early debugging available].

v2.6.24 works fine on that laptop with the same .config, so after a few
hours of bisection (had to restart it 3 times - other regressions
interacted), it honed in on this commit:

| 10270d4838 is first bad commit
|
| Author: Linus Torvalds <torvalds@woody.linux-foundation.org>
| Date:   Wed Feb 13 09:56:14 2008 -0800
|
|     acpi: fix acpi_os_read_pci_configuration() misuse of raw_pci_read()

reverting this commit ontop of -rc5 gave a correctly booting kernel.

But this commit fixes a real bug so the real question is, why did it
break the bootup?

After quite some head-scratching, the following change stood out:

-                               pci_id->bus = tu8;
+                               pci_id->bus = val;

pci_id->bus is defined as u16:

   struct acpi_pci_id {
           u16 segment;
           u16 bus;
   ...

and 'tu8' changed from u8 to u32. So previously we'd unconditionally
mask the return value of acpi_os_read_pci_configuration()
(raw_pci_read()) to 8 bits, but now we just trust whatever comes back
from the PCI access routines and only crop it to 16 bits.

But if the high 8 bits of that result contains any noise then we'll
write that into ACPI's PCI ID descriptor and confuse the heck out of the
rest of ACPI.

So lets check the PCI-BIOS code on that theory. We have this codepath
for 8-bit accesses (arch/x86/pci/pcbios.c:pci_bios_read()):

        switch (len) {
        case 1:
                __asm__("lcall *(%%esi); cld\n\t"
                        "jc 1f\n\t"
                        "xor %%ah, %%ah\n"
                        "1:"
                        : "=c" (*value),
                          "=a" (result)
                        : "1" (PCIBIOS_READ_CONFIG_BYTE),
                          "b" (bx),
                          "D" ((long)reg),
                          "S" (&pci_indirect));

Aha! The "=a" output constraint puts the full 32 bits of EAX into
*value. But if the BIOS's routines set any of the high bits to nonzero,
we'll return a value with more set in it than intended.

The other, more common PCI access methods (v1 and v2 PCI reads) clear
out the high bits already, for example pci_conf1_read() does:

        switch (len) {
        case 1:
                *value = inb(0xCFC + (reg & 3));

which explicitly converts the return byte up to 32 bits and zero-extends
it.

So zero-extending the result in the PCI-BIOS read routine fixes the
regression on my laptop. ( It might fix some other long-standing issues
we had with PCI-BIOS during the past decade ... ) Both 8-bit and 16-bit
accesses were buggy.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-10 18:09:05 -07:00
Rusty Russell
4357bd9453 lguest: Revert 1ce70c4fac, fix real problem.
Ahmed managed to crash the Host in release_pgd(), which cannot be a Guest
bug, and indeed it wasn't.

The bug was that handing a 0 as the address of the toplevel page table
being manipulated can cause the lookup code in find_pgdir() to return
an uninitialized cache entry (we shadow up to 4 top level page tables
for each Guest).

Commit 37cc8d7f96 introduced this
behaviour in the Guest, uncovering the bug.

The patch which he submitted (which removed the /4 from the index
calculation) simply ensured that these high-indexed entries hit the
early exit path of guest_set_pmd().  But you get lots of segfaults in
guest userspace as the PMDs aren't being updated.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-11 09:35:58 +11:00
Rusty Russell
3fabc55f34 lguest: Sanitize the lguest clock.
Now the TSC code handles a zero return from calculate_cpu_khz(),
lguest can simply pass through the value it gets from the Host: if
non-zero, all the normal TSC code applies.

Otherwise (or if the Host really doesn't support TSC), the clocksource
code will fall back to the slower but reasonable lguest clock.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2008-03-11 09:35:57 +11:00
Ionut Nicu
86f4e5d433 [POWERPC] QE: Make qe_get_firmware_info reentrant
The function was returning NULL the second time it was
called if the firmware was uploaded from the boot loader
or the first time it was called if the firmware was
uploaded from the kernel.

Signed-off-by: Ionut Nicu <ionut.nicu@freescale.com>
Acked-By: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-10 13:07:27 -05:00
Andy Fleming
ad562c7159 [POWERPC] 83xx: Make 83xx perfmon support selectable
Not all e300 cores support the performance monitors, and the ones
that don't will be confused by the mf/mtpmr instructions.  This
allows the support to be optional, so the 8349 can turn it off
while the 8379 can turn it on.  Sadly, those aren't config options,
so it will be left to the defconfigs and the users to make that
determination.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-10 09:31:43 -05:00
Ivan Kokshaysky
ab875cf67e alpha: fix iommu-related boot panic
This fixes a boot panic due to a typo in the recent iommu patchset from
FUJITA Tomonori <tomof@acm.org> - the code used dma_get_max_seg_size()
instead of dma_get_seg_boundary().

It also removes a couple of unnecessary BUG_ON() and ALIGN() macros.

Signed-off-by: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Reported-and-tested-by: Bob Tracy <rct@frus.com>
Acked-by: FUJITA Tomonori <tomof@acm.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-09 10:05:15 -07:00
Lennert Buytenhek
4c91363dc0 [ARM] 4856/1: Orion: initialise the sixth PCIe MBUS mapping window as well
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-08 15:53:49 +00:00
Lennert Buytenhek
88603f1dc1 [ARM] 4855/1: Orion: use correct ethernet unit address range
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-08 15:53:48 +00:00
Uwe Kleine-König
a4f14bace8 [ARM] 4853/1: include uImage target in make help
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-08 15:53:47 +00:00
Uwe Kleine-König
ac5bbf21bf [ARM] 4851/1: ns9xxx: fix size of gpiores
GPIO_MAX is the number of the last gpio, not the number of gpios.  So
the bitmap must provide GPIO_MAX + 1 bits.

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-08 15:53:45 +00:00
Roland McGrath
84c6f6046c x86_64: make ptrace always sign-extend orig_ax to 64 bits
This makes 64-bit ptrace calls setting the 64-bit orig_ax field for a
32-bit task sign-extend the low 32 bits up to 64.  This matches what a
64-bit debugger expects when tracing a 32-bit task.

This follows on my "x86_64 ia32 syscall restart fix".  This didn't
matter until that was fixed.

The debugger ignores or zeros the high half of every register slot it
sets (including the orig_rax pseudo-register) uniformly.  It expects
that the setting of the low 32 bits always has the same meaning as a
32-bit debugger setting those same 32 bits with native 32-bit
facilities.

This never arose before because the syscall restart check never
matched any -ERESTART* values due to lack of sign extension.  Before
that fix, even 32-bit ptrace setting orig_eax to -1 failed to trigger
the restart check anyway.  So this was never noticed as a regression
of 64-bit debuggers vs 32-bit debuggers on the same 64-bit kernel.

Signed-off-by: Roland McGrath <roland@redhat.com>
[ Changed to just do the sign-extension unconditionally on x86-64,
  since orig_ax is always just a small integer and doesn't need
  the full 64-bit range ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-07 19:05:58 -08:00
Yuri Tikhonov
1757f2d12d [PPC] 8xx: swap bug-fix
This makes swap routines operate correctly on the ppc_8xx based machines.

Recent kernel's size makes swap feature very important on low-memory platfor
those are actually non-operable without it.

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-07 16:56:54 -06:00
Jeremy McNicoll
3e0d65bf6d [POWERPC] 85xx: sbc8548 - Fix incorrect PCI-X and PCI interrupt map
The following patch allows interrupts to occur on the
sbc8548. Currently PCI and PCI-X devices get assigned an IRQ
but the interrupt count never increases.  This solves the
problem and adds PCI support as well.

Signed-off-by: Jeremy McNicoll <jeremy.mcnicoll@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-07 16:47:52 -06:00
Peter Korsgaard
1722770f13 x86-boot: don't request VBE2 information
The new x86 setup code (4fd06960f1) broke booting on an old P3/500MHz
with an onboard Voodoo3 of mine. After debugging it, it turned out
to be caused by the fact that the vesa probing now asks for VBE2 data.

Disassembing the video BIOS shows that it overflows the vesa_general_info
structure when VBE2 data is requested because the source addresses for the
information strings which get strcpy'ed to the buffer lie outside the 32K
BIOS code (and hence contain long sequences of 0xff's).

E.G.:

get_vbe_controller_info:
00002A9C  60                pushaw
00002A9D  1E                push ds
00002A9E  0E                push cs
00002A9F  1F                pop ds
00002AA0  2BC9              sub cx,cx
00002AA2  6626813D56424532  cmp dword [es:di],0x32454256 ; "VBE2"
00002AAA  7501              jnz .1
00002AAC  41                inc cx
.1:
00002AAD  51                push cx
00002AAE  B91400            mov cx,0x14
00002AB1  BED47F            mov si, controller_header
00002AB4  57                push di
00002AB5  F3A4              rep movsb ; copy vbe1.2 header

00002AB7  B9EC00            mov cx,0xec
00002ABA  2AC0              sub al,al
00002ABC  F3AA              rep stosb ; zero pad remainder

00002ABE  5F                pop di
00002ABF  E8EB0D            call word get_memory
00002AC2  C1E002            shl ax,0x2
00002AC5  26894512          mov [es:di+0x12],ax ; total memory
00002AC9  26C745040003      mov word [es:di+0x4],0x300 ; VBE version
00002ACF  268C4D08          mov [es:di+0x8],cs
00002AD3  268C4D10          mov [es:di+0x10],cs
00002AD7  59                pop cx
00002AD8  E361              jcxz .done ; VBE2 requested?
00002ADA  8D9D0001          lea bx,[di+0x100]
00002ADE  53                push bx
00002ADF  87DF              xchg bx,di ; di now points to 2nd half
00002AE1  26C747140001      mov word [es:bx+0x14],0x100 ; sw rev

00002AE7  26897F06          mov [es:bx+0x6],di		; oem string
00002AEB  268C4708          mov [es:bx+0x8],es
00002AEF  BE5280            mov si,0x8052 ; oem string
00002AF2  E87A1B            call word strcpy

00002AF5  26897F0E          mov [es:bx+0xe],di ; video mode list
00002AF9  268C4710          mov [es:bx+0x10],es
00002AFD  B91E00            mov cx,0x1e
00002B00  BEE87F            mov si,vidmodes
00002B03  F3A5              rep movsw

00002B05  26897F16          mov [es:bx+0x16],di ; oem vendor
00002B09  268C4718          mov [es:bx+0x18],es
00002B0D  BE2480            mov si,0x8024 ; oem vendor
00002B10  E85C1B            call word strcpy

00002B13  26897F1A          mov [es:bx+0x1a],di ; oem product
00002B17  268C471C          mov [es:bx+0x1c],es
00002B1B  BE3880            mov si,0x8038 ; oem product
00002B1E  E84E1B            call word strcpy

00002B21  26897F1E          mov [es:bx+0x1e],di ; oem product rev
00002B25  268C4720          mov [es:bx+0x20],es
00002B29  BE4580            mov si,0x8045 ; oem product rev
00002B2C  E8401B            call word strcpy

00002B2F  58                pop ax
00002B30  B90001            mov cx,0x100
00002B33  2BCF              sub cx,di
00002B35  03C8              add cx,ax
00002B37  2AC0              sub al,al
00002B39  F3AA              rep stosb ; zero pad
.done:
00002B3B  1F                pop ds
00002B3C  61                popaw
00002B3D  B84F00            mov ax,0x4f
00002B40  C3                ret

(The full BIOS can be found at http://peter.korsgaard.com/vgabios.bin
if interested).

The old setup code didn't ask for VBE2 info, and the new code doesn't
actually do anything with the extra information, so the fix is to simply
not request it. Other BIOS'es might have the same problem.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-07 16:39:14 +01:00
Ingo Molnar
7432d149fd x86: re-add reboot fixups
Jan Beulich noticed that the reboot fixups went missing during
reboot.c unification.

(commit 4d022e35fd)

Geode and a few other rare boards with special reboot quirks are
affected.

Reported-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-07 16:39:14 +01:00
Jan Beulich
d032b31a3a x86: fix typo in step.c
TIF_DEBUGCTLMSR has no meaning in the actual MSR...

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-07 16:39:14 +01:00
Jan Beulich
609b5297bc x86: fix merge mistake in i387.c
convert_fxsr_to_user() in 2.6.24's i387_32.c did this, and
convert_to_fxsr() also does the inverse, so I assume it's an oversight
that it is no longer being done.

[ mingo@elte.hu:

  we encode it this way because there's no space for the 'FPU Last
  Instruction Opcode' (->fop) field in the legacy user_i387_ia32_struct
  that PTRACE_GETFPREGS/PTRACE_SETFPREGS uses.

  it's probably pure legacy - i'd be surprised if any user-space relied on
  the FPU Last Opcode in any way. But indeed we used to do it previously
  so the most conservative thing is to preserve that piece of information.
]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-07 16:39:14 +01:00
Aurelien Jarno
e40cd10ccf x86: clear DF before calling signal handler
The Linux kernel currently does not clear the direction flag before
calling a signal handler, whereas the x86/x86-64 ABI requires that.

Linux had this behavior/bug forever, but this becomes a real problem
with gcc version 4.3, which assumes that the direction flag is
correctly cleared at the entry of a function.

This patches changes the setup_frame() functions to clear the
direction before entering the signal handler.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: H. Peter Anvin <hpa@zytor.com>
2008-03-07 16:39:14 +01:00
Timur Tabi
6f913160fa [POWERPC] QE: Fix QE firmware uploading limit
Fix a typo in qe_upload_firmware() that prevented uploading firmware on
systems with more than one RISC core.

Signed-off-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-07 08:55:02 -06:00
Scott Wood
a55387e5ad [POWERPC] 8xx: Fix wrapper platform for adder875, and combine defconfigs.
This fixes the following bug:
http://ozlabs.org/pipermail/linuxppc-dev/2008-February/051979.html

Separate defconfigs are no longer needed now that CONFIG_DEVICE_TREE is gone.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-07 08:42:41 -06:00
Vitaly Bordug
76db5bd26f [POWERPC] 8xx: fix swap
This makes swap routines operate correctly on the ppc_8xx based machines.
Code has been revalidated on mpc885ads (8M sdram) with recent kernel. Based
on patch from Yuri Tikhonov <yur@emcraft.com> to do the same on arch/ppc
instance.

Recent kernel's size makes swap feature very important on low-memory platforms,
those are actually non-operable without it.

Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-07 08:42:28 -06:00
Li Yang
d7f46190ef [POWERPC] 83xx: Add local bus device nodes to MPC837xMDS device trees.
Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-07 08:42:22 -06:00
Li Yang
28b9588592 [POWERPC] 83xx: Fix wrong USB phy type in mpc837xmds dts
Due to chip constraint MPC837x USB DR module can only use
ULPI and serial PHY interfaces.  The patch fixes the wrong
type in dts.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2008-03-07 08:42:11 -06:00
Linus Torvalds
ce4796d1e1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25:
  sh: Fix up the sh64 build.
  sh: Fix up SH7710 VoIP-GW build.
  sh: Flag PMB support as EXPERIMENTAL.
  sh: Update r7780mp defconfig.
  fb: hitfb: Balance probe/remove section annotations.
  sh: hp6xx: Fix up hp6xx_apm build failure.
  fb: pvr2fb: Fix up remaining section mismatch.
  sh: Fix up section mismatches.
  sh: hp6xx: Correct APM output.
  sh: update se7780 defconfig
  sh: replace remaining __FUNCTION__ occurrences
  sh: export copy-page() to modules
  sh_ksyms_32.c update for gcc 4.3
  sh/mm/pg-sh7705.c must #include <linux/fs.h>
2008-03-06 19:32:33 -08:00
Linus Torvalds
46fbdf8935 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6:
  [Blackfin] arch: current_l1_stack_save is a pointer, so use NULL rather than 0
  [Blackfin] arch: fix atomic and32/xor32 comments and ENDPROC markings
  [Blackfin] arch: fix bug - allow SDH driver to be used as module
  [Blackfin] arch: to kill syscalls missing warning by adding new timerfd syscalls
2008-03-06 19:32:05 -08:00
Linus Torvalds
a086313075 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] kprobes arch consolidation build fix
  [IA64] update efi region debugging to use MB, GB and TB as well as KB
  [IA64] use dev_printk in video quirk
  [IA64] remove remaining __FUNCTION__ occurrences
  [IA64] remove unnecessary nfs includes from sys_ia32.c
  [IA64] remove CONFIG_SMP ifdef in ia64_send_ipi()
  [IA64] arch_ptrace() cleanup
  [IA64] remove duplicate code from arch_ptrace()
  [IA64] convert sys_ptrace to arch_ptrace
  [IA64] remove find_thread_for_addr()
  [IA64] do not sync RBS when changing PT_AR_BSP or PT_CFM
  [IA64] access user RBS directly
2008-03-06 19:31:34 -08:00
Harvey Harrison
45e18c228e [IA64] kprobes arch consolidation build fix
ia64 named their handler kprobes_fault_handler while all other
arches used kprobe_fault_handler.  Change the function definition
and header declaration.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-06 09:49:01 -08:00
Simon Horman
818c7e866f [IA64] update efi region debugging to use MB, GB and TB as well as KB
When EFI_DEBUG is defined to a non-zero value in arch/ia64/kernel/efi.c,
the efi memory regions are displayed. This patch enhances the
display code in a few ways:

1. Use TB, GB and MB as well as KB as units.
   Although this introduces rounding errors (KB doesn't as
   size is always a multiple of 4Kb), it does make
   things a lot more readable.

   Also as the range is also shown, it is possible to note the exact size
   if it is important. In my experience, the size field is mostly useful
   for getting a general idea of the size of a region.

   On the rx2620 that I use, there actually is an 8TB region (though not
   backed by physical memory, and 8TB really is a lot more readable than
   8589934592KB.

2. pad the size field with leading spaces to further improve readability

   ...
   ... (   8MB)
   ... ( 928MB)
   ... (   3MB)
   ...

   vs

   ...
   ... (8MB)
   ... (928MB)
   ... (3MB)
   ...

3. Pad the attr field out to 64bits using leading zeros,
   to further improve readability.

   ...
   mem05: type= 2, attr=0x0000000000000008, range=[0x0000000004000000-0x000000000481f000) (   8MB)
   mem06: type= 7, attr=0x0000000000000008, range=[0x000000000481f000-0x000000003e876000) ( 928MB)
   mem07: type= 5, attr=0x8000000000000008, range=[0x000000003e876000-0x000000003eb8e000) (   3MB)
   mem08: type= 4, attr=0x0000000000000008, range=[0x000000003eb8e000-0x000000003ee7a000) (   2MB)
   ...

   ...
   mem05: type= 2, attr=0x8, range=[0x0000000004000000-0x000000000481f000) (   8MB)
   mem06: type= 7, attr=0x8, range=[0x000000000481f000-0x000000003e876000) ( 928MB)
   mem07: type= 5, attr=0x8000000000000008, range=[0x000000003e876000-0x000000003eb8e000) (   3MB)
   mem08: type= 4, attr=0x8, range=[0x000000003eb8e000-0x000000003ee7a000) (   2MB)
   ...

4. Use %d instead of %u for the index field, as i is a signed int.

N.B: This code is not compiled unless EFI_DEBUG is non 0.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-06 09:34:11 -08:00
Bjorn Helgaas
1ab40ec8f2 [IA64] use dev_printk in video quirk
Convert quirk printks to dev_printk().

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-06 09:20:07 -08:00
Harvey Harrison
d4ed80841a [IA64] remove remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Long lines have been kept where they exist, some small spacing changes
have been done.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-06 09:19:27 -08:00
KOSAKI Motohiro
2d9b06c72a [IA64] remove unnecessary nfs includes from sys_ia32.c
Compilation of 2.6.25-rc2-mm1 on ia64 generates many warnings.

IA64 support 2 ELF format (IA64 binary and IA32 binary),
thus if 2 elf related header included, cause many warning or error.

about 2 week ago, J. Bruce Fields proposed this problem fixed patch.
(http://marc.info/?l=linux-ia64&m=120329313305695&w=2)

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-06 09:18:12 -08:00
Bjorn Helgaas
cd3244e605 [IA64] remove CONFIG_SMP ifdef in ia64_send_ipi()
When !CONFIG_SMP, cpu_physical_id() is ia64_get_lid(), which is
functionally identical to

    (ia64_getreg(_IA64_REG_CR_LID) >> 16) & 0xffff

so there's no need for two versions of this code.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-06 09:16:33 -08:00
Russell King
5853e74278 Merge branch 'omap-fixes'
* omap-fixes:
  ARM: OMAP2: Register the L4 io bus to boot OMAP2
  ARM: OMAP1: Compile in other 16xx boards to OSK defconfig
  ARM: OMAP1: Refresh H2 defconfig
  ARM: OMAP1: Refresh OSK defconfig
  ARM: OMAP: gpio lockdep updates
  ARM: OMAP1: omap1/pm.c build fix
  ARM: OMAP1: omap h2 regression fix
  ARM: OMAP1: Fix compile for boards depending on old gpio expander
  ARM: OMAP1: omap h3 regression and build fix
  ARM: OMAP: Remove compiler warning when i2c is not set
  ARM: OMAP: fix omap i2c init (regression)
  ARM: OMAP: fix false lockdep warnings
  ARM: OMAP: Fix sleep under spinlock for cpufreq
  ARM: OMAP: Pass logical DMA channel number always to callback handlers
2008-03-06 12:18:25 +00:00
Nicolas Ferre
6bb68f8867 [ARM] AT91: correct at91sam9263ek LCD power gpio pin
Correct GPIO pin assignment for the LCD power control (PCI)

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-06 12:18:18 +00:00
Harvey Harrison
8e86f4271a [ARM] replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-06 12:18:18 +00:00
Greg Ungerer
9c4c9f3879 [ARM] 4849/1: move ATAGS asm definitions
Move the definitions of ATAG_CORE and ATAG_CORE_SIZE in head.S to
head-common.S. There is no use of these in head.S itself, but they
are used in head-common.S. When building for the !CONFIG_MMU case
these were not defined when compiling head-nommu.S (which includes
head-common.S).

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-06 12:18:18 +00:00
David Brownell
37aca70c62 [ARM] 4848/1: at91: remove false lockdep warnings
Remove false lockdep warnings about lock recursion when declaring
IRQs as being wake-capable, by marking putting GPIO irq_desc locks
into their own class.

(Thanks to Peter Zijlstra for helping track down such a small
fix to this problem.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Andrew Victor <linux@maxim.org.za>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-06 12:18:18 +00:00
Nicolas Pitre
b24061fadc [ARM] 4847/1: kprobes: fix compilation with CONFIG_DEBUG_FS=y
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-06 12:18:18 +00:00
Guennadi Liakhovetski
be73a347ec [ARM] 4845/1: Orion: Ignore memory tags with invalid data
The DNS-323, Kurobox-Pro / Linkstation-Pro, QNAP TS-109/TS-209 and some
other orion-based systems have several bogus memory entries in the tag
table, which causes the system to crash at startup. Ignore them by
resetting the tag ID to 0 in a machine fixup function.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-06 12:18:17 +00:00
Kyungmin Park
09f21ed4c1 ARM: OMAP2: Register the L4 io bus to boot OMAP2
This patch enables OMAP2 to boot.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-06 13:28:06 +02:00
Tony Lindgren
19dc8a5b06 ARM: OMAP1: Compile in other 16xx boards to OSK defconfig
This allows monitoring compile issues with Kautobuild for
other omap1 boards until we have more board specific defconfig
files.

After 2.6.25, we can add a generic config_omap_generic16xx to
compile in support for all 16xx boards and then remove other
boards from OSK defconfig.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-06 13:28:06 +02:00
Tony Lindgren
d68a8ce834 ARM: OMAP1: Refresh H2 defconfig
Refresh H2 defconfig

Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-06 13:27:16 +02:00
Tony Lindgren
d4423fd079 ARM: OMAP1: Refresh OSK defconfig
Refresh OSK defconfig

Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-06 13:27:16 +02:00
Paul Mundt
7b9726a7a0 sh: Fix up the sh64 build.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 17:23:15 +09:00
Paul Mundt
e7d7deca60 sh: Fix up SH7710 VoIP-GW build.
The only board-specific bits that existed here were for setting up the
IRQs, which are now handled by the SH7710 CPU support code instead. As
there's nothing else to do for setup, kill off the board support code
and have the defconfig use the generic machvec instead.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 16:08:00 +09:00
Paul Mundt
2af8b3b642 sh: Flag PMB support as EXPERIMENTAL.
There's still work that needs to be done here, and this should not be
enabled by default on existing boards.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 16:06:38 +09:00
Paul Mundt
149b91e107 sh: Update r7780mp defconfig.
This disables the PMB/32BIT=y by default in r7780mp, as turning this on
presently results in build errors (for an admittedly experimental
feature).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 16:03:58 +09:00
Paul Mundt
dd4f99b42d sh: hp6xx: Fix up hp6xx_apm build failure.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 13:48:08 +09:00
Paul Mundt
b2839ed83f sh: Fix up section mismatches.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 12:43:38 +09:00
Kristoffer Ericson
8b03c040e4 sh: hp6xx: Correct APM output.
This patch fixes the old non-verbose hp6xx apm code and enables some
very basic apm output.  We now get percentage (battery) output
and basic time estimate.

Signed-off-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 11:54:17 +09:00
goda.yusuke
56546b1896 sh: update se7780 defconfig
This patch updates se7780_defconfig

Signed-off-by: Yusuke Goda <goda.yusuke@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 11:21:40 +09:00
Harvey Harrison
866e6b9e50 sh: replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 11:18:22 +09:00
Andrew Morton
ad0caae0de sh: export copy-page() to modules
ERROR: "copy_page" [fs/unionfs/unionfs.ko] undefined!

like all the other architectures.

Cc: Erez Zadok <ezk@cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 11:16:40 +09:00
Adrian Bunk
4bee4ca2de sh_ksyms_32.c update for gcc 4.3
This patch fixes the following build error with landisk_defconfig when
using gcc 4.3:

<--  snip  -->

...
  MODPOST 50 modules
ERROR: "__udivsi3_i4i" [net/sunrpc/sunrpc.ko] undefined!
ERROR: "__udivsi3_i4i" [net/appletalk/appletalk.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/ufs/ufs.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/ntfs/ntfs.ko] undefined!
ERROR: "__sdivsi3_i4i" [fs/ntfs/ntfs.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/nfsd/nfsd.ko] undefined!
ERROR: "__sdivsi3_i4i" [fs/nfsd/nfsd.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/nfs/nfs.ko] undefined!
ERROR: "__udivsi3_i4i" [fs/lockd/lockd.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/usb/storage/usb-storage.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/usb/serial/pl2303.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/usb/serial/pl2303.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/usb/serial/ftdi_sio.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/usb/misc/sisusbvga/sisusbvga.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/usb/misc/sisusbvga/sisusbvga.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/media/video/v4l1-compat.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/v4l1-compat.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/usbvideo/vicam.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/media/video/usbvideo/usbvideo.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/usbvideo/usbvideo.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/media/video/sn9c102/sn9c102.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/sn9c102/sn9c102.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/se401.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/media/video/pwc/pwc.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/md/raid0.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/md/md-mod.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/md/md-mod.ko] undefined!
ERROR: "__udivsi3_i4i" [drivers/md/linear.ko] undefined!
ERROR: "__sdivsi3_i4i" [drivers/hid/usbhid/usbhid.ko] undefined!
make[2]: *** [__modpost] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 11:12:16 +09:00
Adrian Bunk
c31f2f3d06 sh/mm/pg-sh7705.c must #include <linux/fs.h>
This patch fixes the following compile error:

<--  snip  -->

...
  CC      arch/sh/mm/pg-sh7705.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/mm/pg-sh7705.c: In function 'ptep_get_and_clear':
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/sh/mm/pg-sh7705.c:130: error: implicit declaration of function 'mapping_writably_mapped'
make[2]: *** [arch/sh/mm/pg-sh7705.o] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-03-06 11:11:49 +09:00
Linus Torvalds
9af6b056a2 Merge branch 'fixes-25' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
* 'fixes-25' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] fix section mismatch warnings
  [CPUFREQ] Remove debugging message from e_powersaver
  [CPUFREQ] Fix missing cpufreq_cpu_put() call in ->store
  [CPUFREQ] Fix missing cpufreq_cpu_put() call in ->show
2008-03-05 17:49:01 -08:00
Petr Tesarik
aa17f6f930 [IA64] arch_ptrace() cleanup
Remove duplicate code, clean up goto's and indentation.

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-05 15:50:48 -08:00
Petr Tesarik
8db3f52541 [IA64] remove duplicate code from arch_ptrace()
Remove all code which does exactly the same thing as ptrace_request().

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-05 15:49:11 -08:00
Petr Tesarik
eac738e6ce [IA64] convert sys_ptrace to arch_ptrace
Convert sys_ptrace() to arch_ptrace().

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-05 15:48:47 -08:00
Petr Tesarik
e868a55c2a [IA64] remove find_thread_for_addr()
find_thread_for_addr() is no longer needed.  It was only used to find
the correct kernel RBS for a given memory address, but since the kernel
RBS is not needed any longer, this function can go away.

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-05 15:48:16 -08:00
Petr Tesarik
08b23d74e0 [IA64] do not sync RBS when changing PT_AR_BSP or PT_CFM
Syncing is no longer needed, because user RBS is already
up-to-date.  Actually, if a debugger modified the contents
of the original RBS prior to changing PT_AR_BSP, the
modifications would get overwritten.

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-05 15:47:53 -08:00
Petr Tesarik
972559a052 [IA64] access user RBS directly
Because the user RBS of a process is now completely stored in
user-mode when the process is ptrace-stopped, accesses to the
RBS should no longer augment any part of the kernel RBS.

This means we can get rid of most ia64_peek() and ia64_poke()
calls.

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-05 15:47:31 -08:00
Dave Jones
0e5aa8d621 [CPUFREQ] Remove debugging message from e_powersaver
We don't need to printk a message every time we transition.
Leave the code there, but ifdef'd out, as it's useful when
adding support for new processors.

Reported-by: Petr Titěra <P.Titera@century.cz>
Signed-off-by: Dave Jones <davej@redhat.com>
2008-03-05 14:45:31 -05:00
Hongjie Yang
583b33bc83 [S390] incorrect reipl nss name.
/sys/firmware/reipl/nss/name contains the nss name when defsys or
savesys command has been executed. If the defsys or savesys command
fails the kernel_nss_name has to be cleared since a reipl on that
nss name won't be possible.

Signed-off-by: Hongjie Yang <hongjie@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-03-05 12:37:20 +01:00
Michael Holzheu
208e559155 [S390] Load disabled wait psw if reipl fails.
Normally this should not happen, but it's cleaner to do it that way.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-03-05 12:37:19 +01:00
Heiko Carstens
684de39bd7 [S390] Fix IPL from NSS.
IPL from NSS didn't work because the memory detection routine omits any
memory sections with a size lower than what MAX_ORDER defines.
This causes the detection routine to skip the first memory segment which
has a size of 1MB. Which later on will let the kernel think that there
is no memory available at all.
Since in addition the z/VM memory increment size is 1MB force MAX_ORDER
to be 9, so we can support 1MB segments.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-03-05 12:37:19 +01:00
Heiko Carstens
98c7b388af [S390] Get rid of memcpy gcc warning workaround.
Compile smp.o with -Wno-nonnull so gcc stops warning about memcpy
being used with a null parameter. Also remove the workaround code
and use a char * cast instead of a void * cast to do computations.

Cc: Bastian Blank <bastian@waldi.eu.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-03-05 12:37:17 +01:00
Heiko Carstens
5ccd0e43bb [S390] idle: Fix machine check handling in idle loop.
If a machine check handling is pending when the idle loop is entered
default_idle will be left with timer ticks and virtual timer disabled.
Fix this by "calling" the idle_chain. Also a BUG_ON(!in_interrupt) in
start_hz_timer must be removed since the function now gets called from
non interrupt context as well.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-03-05 12:37:17 +01:00
Martin Schwidefsky
9361a492cd [S390] Update default configuration.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-03-05 12:37:16 +01:00
David Brownell
a6472533e4 ARM: OMAP: gpio lockdep updates
Fix some spinlock issues reported by lockdep:  since the gpio bank
locks can be aquired in both irq and non-irq contexts, they need
to be consistent about always using the irq-safe variants.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-05 10:23:21 +02:00
David Brownell
02bad5f9bc ARM: OMAP1: omap1/pm.c build fix
Build fix:

arch/arm/mach-omap1/pm.c: In function 'omap_pm_init':
arch/arm/mach-omap1/pm.c:720: warning: passing argument 2 of 'sysfs_create_file' from incompatible pointer type

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-05 10:23:20 +02:00
David Brownell
9221bb1c3a ARM: OMAP1: omap h2 regression fix
H2 and H3 were broken on by e27a93a944,
which removed declarations for their tps6501x chips.  This resolves
that issue for the H2.  (Note that this patch *also* broke the isp1301
support on H2; it presumed a not-yet-merged new-style I2c driver.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-05 10:23:20 +02:00
David Brownell
0cc0a44116 ARM: OMAP1: omap h3 regression and build fix
Get rid of build warnings and errors in mainline for H3 boards; not
all the H3 updates were correct, it seems like the OMAP1 boards are
not getting proper build testing.

Also, commit e27a93a944 introduced a
regression related to the tps65013 chip.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-05 10:23:20 +02:00
David Brownell
cfa9a63a9a ARM: OMAP: fix omap i2c init (regression)
In mainline, the "old style" I2C registration was only removed for
OMAP2, leading to init-time bugs (regressions) like:

    sysfs: duplicate filename 'i2c_omap.1' can not be created
    ------------[ cut here ]------------
    WARNING: at fs/sysfs/dir.c:424 sysfs_add_one+0x40/0xd4()
    Modules linked in:
    	... deletia ...
    [<c0036a38>] (omap_init_i2c+0x0/0x50) from [<c000cea8>] (omap_init_devices+0x10/0x24)
     r4:c001e000
    [<c000ce98>] (omap_init_devices+0x0/0x24) from [<c0008684>] (do_initcalls+0x78/0x200)
    	... deletia ...
    ---[ end trace ca143223eefdc828 ]---
    kobject_add_internal failed for i2c_omap.1 with -EEXIST, don't try to register things with the same name in the same directory.

The fix is obvious:  remove the old init code, it's no longer needed.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-05 10:23:20 +02:00
David Brownell
8ba55c5c13 ARM: OMAP: fix false lockdep warnings
Remove false lockdep warnings about lock recursion when declaring
IRQs as being wake-capable, by marking putting GPIO irq_desc locks
into their own class.

(Thanks to Peter Zijlstra for helping track down such a small
fix to this problem.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-05 10:23:19 +02:00
Hiroshi DOYU
b8488fbe6d ARM: OMAP: Fix sleep under spinlock for cpufreq
[   10.523437] BUG: sleeping function called from invalid context at kernel/mut6
[   10.523437] in_atomic():0, irqs_disabled():128
[   10.523437] [<c002c168>] (dump_stack+0x0/0x14) from [<c005374c>] (__might_sl)
[   10.523437] [<c0053698>] (__might_sleep+0x0/0xd4) from [<c024fdf4>] (mutex_l)
[   10.523437]  r5 = C02F0DE8  r4 = C02F0DF0
[   10.523437] [<c024fdd4>] (mutex_lock+0x0/0x44) from [<c0041df4>] (clk_get+0x)
[   10.523437]  r4 = 00000000
[   10.523437] [<c0041da4>] (clk_get+0x0/0x128) from [<c0046520>] (omap_getspee)
[   10.523437]  r8 = 00000002  r7 = 00000000  r6 = C031DAF8  r5 = C0473980
[   10.523437]  r4 = 00000000
[   10.523437] [<c00464fc>] (omap_getspeed+0x0/0x5c) from [<c01b8518>] (cpufreq)
[   10.523437]  r5 = C0473980  r4 = 00000002

Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-05 10:23:19 +02:00
Jarkko Nikula
538528de0c ARM: OMAP: Pass logical DMA channel number always to callback handlers
This makes parameter passing to DMA handlers uniform between non-chained
and chained transfers and makes debugging easier. Additional data like
chain_id can be always passed to handlers via callback data if needed.

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-03-05 10:23:19 +02:00
Linus Torvalds
665c1ef836 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC]: Fix link errors with gcc-4.3
  sparc64: replace remaining __FUNCTION__ occurances
  sparc: replace remaining __FUNCTION__ occurances
  [SPARC]: Add reboot_command[] extern decl to asm/system.h
  [SPARC]: Mark linux_sparc_{fpu,chips} static.
2008-03-04 20:20:32 -08:00
Linus Torvalds
71ca44dac4 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] fix ia64 kprobes compilation
  [IA64] move gcc_intrin.h from header-y to unifdef-y
  [IA64] workaround tiger ia64_sal_get_physical_id_info hang
  [IA64] move defconfig to arch/ia64/configs/
  [IA64] Fix irq migration in multiple vector domain
  [IA64] signal(ia64_ia32): add a signal stack overflow check
  [IA64] signal(ia64): add a signal stack overflow check
  [IA64] CONFIG_SGI_SN2 - auto select NUMA and ACPI_NUMA
2008-03-04 16:39:23 -08:00
Jesper Nilsson
07f2402b4a cris: correct usage of __user for copy to and from user space in lib/usercopy and uaccess.h
Function __copy_user_zeroing in arch/lib/usercopy.c had the wrong parameter
set as __user, and in include/asm-cris/uaccess.h, it was not set at all for
some of the calling functions.

This will cut the number of warnings quite dramatically when using sparse.

While we're here, remove useless CVS log and correct confusing typo.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:16 -08:00
FUJITA Tomonori
d5a4630a0d alpha: remove unused DEBUG_FORCEDAC define in IOMMU
This just removes unused DEBUG_FORCEDAC define in the IOMMU code.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:14 -08:00
FUJITA Tomonori
cf54014548 alpha: make IOMMU respect the segment boundary limits
This patch makes the IOMMU code not allocate a memory area spanning LLD's
segment boundary.

is_span_boundary() judges whether a memory area spans LLD's segment boundary.
If iommu_arena_find_pages() finds such a area, it tries to find the next
available memory area.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:14 -08:00
FUJITA Tomonori
23d7e0390a alpha: IOMMU had better access to the free space bitmap at only one place
iommu_arena_find_pages duplicates the code to access to the bitmap for free
space management.  This patch convert the IOMMU code to have only one place to
access the bitmap, in the popular way that other IOMMUs (e.g.  POWER and
SPARC) do.

This patch is preparation for modifications to fix the IOMMU segment boundary
problem.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:14 -08:00
FUJITA Tomonori
3c5f1def7d alpha: convert IOMMU to use ALIGN()
This patch is preparation for modifications to fix the IOMMU segment boundary
problem.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:13 -08:00
Jesper Nilsson
9fe3fd03a1 CRIS: Import string.c (memcpy) from newlib: fixes compile error with gcc 4
Adrian Bunk reported another compile error with a SVN head GCC:

...
  CC      arch/cris/arch-v10/lib/string.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:138:
error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:138:
error: lvalue required as increment operand
/home/bunk/linux/kernel-2.6/git/linux-2.6/arch/cris/arch-v10/lib/string.c:139:
error: lvalue required as increment operand
...

This is due to the use of the construct:

	*((long*)dst)++ = lc;

Which isn't legal since casts don't return an lvalue.

The solution is to import the implementation from newlib,
which is continually autotested together with GCC mainline,
and uses the construct:

	*(long *) dst = lc; dst += 4;

Since this is an import of a file from newlib, I'm not touching
the formatting or correcting any checkpatch errors.

As for the earlier fix for memset.c, even if the two files for
CRIS v10 and CRIS v32 are identical at the moment, it might
be possible to tweak the CRIS v32 version.
Thus, I'm not yet folding them into the same file, at least not
until we've done some research on it.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <starvik@axis.com>
Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:13 -08:00
Ananth N Mavinakayanahalli
9edddaa200 Kprobes: indicate kretprobe support in Kconfig
Add CONFIG_HAVE_KRETPROBES to the arch/<arch>/Kconfig file for relevant
architectures with kprobes support.  This facilitates easy handling of
in-kernel modules (like samples/kprobes/kretprobe_example.c) that depend on
kretprobes being present in the kernel.

Thanks to Sam Ravnborg for helping make the patch more lean.

Per Mathieu's suggestion, added CONFIG_KRETPROBES and fixed up dependencies.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:11 -08:00
Jesper Nilsson
a10568733c CRIS v10: Include mm.h instead of vmstat.h in kernel/time.c
Commit 2f569afd9c
(CONFIG_HIGHPTE vs. sub-page page tables) introduced use of
inc_zone_page_state and dec_zone_page_state in include/linux/mm.h.

Those are defined in include/linux/vmstat.h, but after it includes
mm.h, making it impossible to include vmstat.h since inc_zone_page_state
and dec_zone_page_state then would be undefined.

arch/cris/arch-v10/kernel/time.c does just this, which makes the
CRIS v10 build break with the following error:

...
  CC      arch/cris/arch-v10/kernel/time.o
In file included from include/linux/vmstat.h:7,
                 from arch/cris/arch-v10/kernel/time.c:17:
include/linux/mm.h: In function 'pgtable_page_ctor':
include/linux/mm.h:902: error: implicit declaration of function 'inc_zone_page_state'
include/linux/mm.h: In function 'pgtable_page_dtor':
include/linux/mm.h:908: error: implicit declaration of function 'dec_zone_page_state'
make[2]: *** [arch/cris/arch-v10/kernel/time.o] Error 1
make[1]: *** [arch/cris/arch-v10/kernel] Error 2
make: *** [sub-make] Error 2
...

By changing kernel/time.c to include linux/mm.h, the build succeeds.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Mikael Starvik <mikael.starvik@axis.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 16:35:09 -08:00
Adrian Bunk
9dad6f5785 [IA64] fix ia64 kprobes compilation
This patch fixes the following compile error with a recent gcc:
  CC      kernel/kprobes.o
/home/bunk/linux/kernel-2.6/git/linux-2.6/kernel/kprobes.c:1066: error: __ksymtab_jprobe_return causes a section type conflict

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-04 14:35:42 -08:00
Alex Chiang
6ed0dc5ba8 [IA64] workaround tiger ia64_sal_get_physical_id_info hang
This fixes regression introduced in 113134fcbc

Intel Tiger platforms hang when calling SAL_GET_PHYSICAL_ID_INFO
instead of properly returning -1 for unimplemented, so add a
version check.

SGI Altix platforms have an incorrect SAL version hard-coded into
their prom -- they encode 2.9, but actually implement 3.2 -- so
fix it up and allow ia64_sal_get_physical_id_info to keep
working.

Signed-off-by: Alex Chiang <achiang@hp.com>
Acked-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-04 14:26:50 -08:00
Adrian Bunk
022f926885 [IA64] move defconfig to arch/ia64/configs/
This patch moves the default ia64 defconfig to
arch/ia64/configs/generic_defconfig where it belongs and selects it as
the default defconfig through KBUILD_DEFCONFIG.

Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-04 14:19:06 -08:00
Kenji Kaneshige
a6cd6322d5 [IA64] Fix irq migration in multiple vector domain
Fix the problem that the following error message is sometimes displayed
at irq migration when vector domain is enabled.

    "Unexpected interrupt vector %d on CPU %d is not mapped to any IRQ!"

The cause of this problem is an interrupt is sent to the previous
target CPU after cleaning up vector to irq mapping table. To clean up
vector to irq map on the previous target CPU safty, change the irq
migration in multiple vector domain as follows. The original idea is
from x86 interrupt management code.

    - Delay vector to irq table cleanup until the interrupts are sent
      to new target CPUs. By this, it is ensured that target CPU is
      completely changed on the interrupt controller side.

    - Even after the interrupts are sent to new target CPUs, there can
      be pended interrupts remaining on the previous target CPU. So we
      need to delay clearning up vector to irq table until the pended
      interrupt is handled. For this, send IPI to the previous target
      CPU with lower priority vector and clean up vector to irq table
      in its handler.

This patch affects only to irq migration code with multiple vector
domain is enabled.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-04 14:16:20 -08:00
Shi Weihua
86dffa4cd1 [IA64] signal(ia64_ia32): add a signal stack overflow check
The similar check has been added to x86_32(i386) in commit
id 83bd01024b.
So we add this check to ia64_ia32 and improve it a liitle bit in that
we need to check for stack overflow only when the signal is on stack.

Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-04 14:11:22 -08:00
Shi Weihua
d7a6c68a2f [IA64] signal(ia64): add a signal stack overflow check
The similar check has been added to x86_32(i386) in commit
id 83bd01024b.
So we add this check to ia64 and improve it a liitle bit in that
we need to check for stack overflow only when the signal is on stack.

Signed-off-by: Shi Weihua <shiwh@cn.fujitsu.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-04 14:10:59 -08:00
Jes Sorensen
bd3be240cb [IA64] CONFIG_SGI_SN2 - auto select NUMA and ACPI_NUMA
Auto select CONFIG_NUMA and CONFIG_ACPI_NUMA when picking SN2, similar
to how they are selected automatically for CONFIG_IA64_GENERIC.

Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2008-03-04 14:04:11 -08:00
Hugh Dickins
fcab59a318 x86: a P4 is a P6 not an i486
P4 has been coming out as CPU_FAMILY=4 instead of 6: fix MPENTIUM4 typo.

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 11:55:34 -08:00
Linus Torvalds
34f10fc988 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86/xen: fix DomU boot problem
  x86: not set node to cpu_to_node if the node is not online
  x86, i387: fix ptrace leakage using init_fpu()
2008-03-04 09:22:32 -08:00
Linus Torvalds
67171a3f03 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
  x86: disable KVM for Voyager and friends
  KVM: VMX: Avoid rearranging switched guest msrs while they are loaded
  KVM: MMU: Fix race when instantiating a shadow pte
  KVM: Route irq 0 to vcpu 0 exclusively
  KVM: Avoid infinite-frequency local apic timer
  KVM: make MMU_DEBUG compile again
  KVM: move alloc_apic_access_page() outside of non-preemptable region
  KVM: SVM: fix Windows XP 64 bit installation crash
  KVM: remove the usage of the mmap_sem for the protection of the memory slots.
  KVM: emulate access to MSR_IA32_MCG_CTL
  KVM: Make the supported cpuid list a host property rather than a vm property
  KVM: Fix kvm_arch_vcpu_ioctl_set_sregs so that set_cr0 works properly
  KVM: SVM: set NM intercept when enabling CR0.TS in the guest
  KVM: SVM: Fix lazy FPU switching
2008-03-04 09:22:05 -08:00
Ian Campbell
87d034f313 x86/xen: fix DomU boot problem
Construct Xen guest e820 map with a hole between 640K-1M.

It's pure luck that Xen kernels have gotten away with it in the past.

The patch below seems like the right thing to do. It certainly boots in
a domU without the DMI problem (without any of the other related patches
such as Alexander's).

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Tested-by: Mark McLoughlin <markmc@redhat.com>
Acked-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
2008-03-04 17:10:12 +01:00
Yinghai Lu
7c9e92b6cd x86: not set node to cpu_to_node if the node is not online
resolve boot problem reported by Mel Gorman:

   http://lkml.org/lkml/2008/2/13/404

init_cpu_to_node will use cpu->apic (from MADT or mptable) and
apic->node(from SRAT or AMD config space with k8_bus_64.c) to have
cpu->node mapping, and later identify_cpu will overwrite them
again...(with nearby_node...)

this patch checks if the node is online, otherwise it will not
update cpu_node map. so keep cpu_node map to online node before
identify_cpu..., to prevent possible error.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
2008-03-04 17:10:12 +01:00
Suresh Siddha
18a8622101 x86, i387: fix ptrace leakage using init_fpu()
This bug got introduced by the recent i387 merge:

  commit 4421011120
  Author: Roland McGrath <roland@redhat.com>
  Date:   Wed Jan 30 13:31:50 2008 +0100

      x86: x86 i387 user_regset

Current usage of unlazy_fpu() in ptrace specific routines is wrong.
unlazy_fpu() will not init fpu if the task never used math. So the
ptrace calls can expose the parent tasks FPU data in some cases.

Replace it with the init_fpu() which will init the math state, if the
task never used math before.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
2008-03-04 17:10:12 +01:00
Geert Uytterhoeven
8727e28dde m68k{,nommu}: Wire up new timerfd syscalls
m68k{,nommu}: Wire up the new timerfd syscalls, which were introduced in
commit 4d672e7ac7 ("timerfd: new timerfd API").

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 08:04:11 -08:00
Greg Ungerer
881ab680a4 m68knommu: remove duplicate hw_tick() code
Remove duplicate hw_tick() function from 68328 timers code.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 08:04:11 -08:00
Greg Ungerer
673da21b10 m68knommu: update defconfig
Update the m68knommu defconfig.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-04 08:04:11 -08:00
Randy Dunlap
1a4e3f89c6 x86: disable KVM for Voyager and friends
Most classic Pentiums don't have hardware virtualization extension,
and building kvm with Voyager, Visual Workstation, or NUMAQ
generates spurious failures.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
2008-03-04 17:42:55 +02:00
Avi Kivity
33f9c505ed KVM: VMX: Avoid rearranging switched guest msrs while they are loaded
KVM tries to run as much as possible with the guest msrs loaded instead of
host msrs, since switching msrs is very expensive.  It also tries to minimize
the number of msrs switched according to the guest mode; for example,
MSR_LSTAR is needed only by long mode guests.  This optimization is done by
setup_msrs().

However, we must not change which msrs are switched while we are running with
guest msr state:

 - switch to guest msr state
 - call setup_msrs(), removing some msrs from the list
 - switch to host msr state, leaving a few guest msrs loaded

An easy way to trigger this is to kexec an x86_64 linux guest.  Early during
setup, the guest will switch EFER to not include SCE.  KVM will stop saving
MSR_LSTAR, and on the next msr switch it will leave the guest LSTAR loaded.
The next host syscall will end up in a random location in the kernel.

Fix by reloading the host msrs before changing the msr list.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04 15:19:50 +02:00
Avi Kivity
f7d9c7b7b9 KVM: MMU: Fix race when instantiating a shadow pte
For improved concurrency, the guest walk is performed concurrently with other
vcpus.  This means that we need to revalidate the guest ptes once we have
write-protected the guest page tables, at which point they can no longer be
modified.

The current code attempts to avoid this check if the shadow page table is not
new, on the assumption that if it has existed before, the guest could not have
modified the pte without the shadow lock.  However the assumption is incorrect,
as the racing vcpu could have modified the pte, then instantiated the shadow
page, before our vcpu regains control:

  vcpu0        vcpu1

  fault
  walk pte

               modify pte
               fault in same pagetable
               instantiate shadow page

  lookup shadow page
  conclude it is old
  instantiate spte based on stale guest pte

We could do something clever with generation counters, but a test run by
Marcelo suggests this is unnecessary and we can just do the revalidation
unconditionally.  The pte will be in the processor cache and the check can
be quite fast.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04 15:19:49 +02:00
Avi Kivity
0b975a3c2d KVM: Avoid infinite-frequency local apic timer
If the local apic initial count is zero, don't start a an hrtimer with infinite
frequency, locking up the host.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04 15:19:48 +02:00
Marcelo Tosatti
24993d5349 KVM: make MMU_DEBUG compile again
the cr3 variable is now inside the vcpu->arch structure.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04 15:19:47 +02:00
Marcelo Tosatti
5e4a0b3c1b KVM: move alloc_apic_access_page() outside of non-preemptable region
alloc_apic_access_page() can sleep, while vmx_vcpu_setup is called
inside a non preemptable region. Move it after put_cpu().

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04 15:19:46 +02:00
Joerg Roedel
a2938c8070 KVM: SVM: fix Windows XP 64 bit installation crash
While installing Windows XP 64 bit wants to access the DEBUGCTL and the last
branch record (LBR) MSRs. Don't allowing this in KVM causes the installation to
crash. This patch allow the access to these MSRs and fixes the issue.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04 15:19:45 +02:00
Izik Eidus
72dc67a696 KVM: remove the usage of the mmap_sem for the protection of the memory slots.
This patch replaces the mmap_sem lock for the memory slots with a new
kvm private lock, it is needed beacuse untill now there were cases where
kvm accesses user memory while holding the mmap semaphore.

Signed-off-by: Izik Eidus <izike@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-04 15:19:40 +02:00
Mike Frysinger
11b0be7c2c [Blackfin] arch: fix atomic and32/xor32 comments and ENDPROC markings
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-03 17:44:14 -07:00
Michael Hennerich
3d7e6cf8f5 [Blackfin] arch: fix bug - allow SDH driver to be used as module
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-03 17:40:28 -07:00
Bryan Wu
2f775dbaa5 [Blackfin] arch: to kill syscalls missing warning by adding new timerfd syscalls
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-03-06 16:04:58 -07:00
David S. Miller
f0e98c387e [SPARC]: Fix link errors with gcc-4.3
Reported by Adrian Bunk.

Just like in changeset a3f9985843
("[SPARC64]: Move kernel unaligned trap handlers into assembler
file.") we have to move the assembler bits into a seperate
asm file because as far as the compiler is concerned
these inline bits we're doing in unaligned.c are unreachable.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-03 15:01:05 -08:00
Harvey Harrison
9a4a668240 sparc64: replace remaining __FUNCTION__ occurances
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-03 11:42:17 -08:00
Harvey Harrison
74074dec4f sparc: replace remaining __FUNCTION__ occurances
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-03-03 11:41:51 -08:00
Linus Torvalds
cad226b8a7 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] Fix freeing of page tables for ARM in free_pgd_slow
2008-03-03 10:47:52 -08:00
Linus Torvalds
64e6269071 Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: revert "x86: fix pmd_bad and pud_bad to support huge pages"
  x86: revert "x86: CPA: avoid split of alias mappings"
2008-03-03 10:36:50 -08:00
Rafael J. Wysocki
9b5cf48b06 x86: revert "x86: CPA: avoid split of alias mappings"
Revert:

  commit 8be8f54bae
  Author: Thomas Gleixner <tglx@linutronix.de>
  Date:   Sat Feb 23 20:43:21 2008 +0100

      x86: CPA: avoid split of alias mappings

because it clearly mishandles the case when __change_page_attr(), called
from __change_page_attr_set_clr(), changes cpa->processed to 1 and
cpa_process_alias(cpa) is executed right after that.

This crashes my x86-64 test box early in the boot process
(ref. http://bugzilla.kernel.org/show_bug.cgi?id=10140#c4).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-03-03 14:18:27 +01:00
Paul Mackerras
3cecdda3f1 Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/arnd/cell-2.6 into merge 2008-03-03 21:31:09 +11:00
Joerg Roedel
c7ac679c16 KVM: emulate access to MSR_IA32_MCG_CTL
Injecting an GP when accessing this MSR lets Windows crash when running some
stress test tools in KVM.  So this patch emulates access to this MSR.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-03 11:22:37 +02:00
Avi Kivity
674eea0fc4 KVM: Make the supported cpuid list a host property rather than a vm property
One of the use cases for the supported cpuid list is to create a "greatest
common denominator" of cpu capabilities in a server farm.  As such, it is
useful to be able to get the list without creating a virtual machine first.

Since the code does not depend on the vm in any way, all that is needed is
to move it to the device ioctl handler.  The capability identifier is also
changed so that binaries made against -rc1 will fail gracefully.

Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-03 11:22:25 +02:00
Paul Knowles
d730616384 KVM: Fix kvm_arch_vcpu_ioctl_set_sregs so that set_cr0 works properly
Whilst working on getting a VM to initialize in to IA32e mode I found
this issue. set_cr0 relies on comparing the old cr0 to the new one to
work correctly.  Move the assignment below so the compare can work.

Signed-off-by: Paul Knowles <paul@transitive.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-03 11:22:14 +02:00
Joerg Roedel
6b390b6392 KVM: SVM: set NM intercept when enabling CR0.TS in the guest
Explicitly enable the NM intercept in svm_set_cr0 if we enable TS in the guest
copy of CR0 for lazy FPU switching. This fixes guest SMP with Linux under SVM.
Without that patch Linux deadlocks or panics right after trying to boot the
other CPUs.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-03 11:20:21 +02:00
Joerg Roedel
334df50a86 KVM: SVM: Fix lazy FPU switching
If the guest writes to cr0 and leaves the TS flag at 0 while vcpu->fpu_active
is also 0, the TS flag in the guest's cr0 gets lost. This leads to corrupt FPU
state an causes Windows Vista 64bit to crash very soon after boot.  This patch
fixes this bug.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Markus Rechberger <markus.rechberger@amd.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-03 11:18:18 +02:00
Michael Ellerman
da40451bba [POWERPC] Convert the cell IOMMU fixed mapping to 16M IOMMU pages
The only tricky part is we need to adjust the PTE insertion loop to
cater for holes in the page table. The PTEs for each segment start on
a 4K boundary, so with 16M pages we have 16 PTEs per segment and then
a gap to the next 4K page boundary.

It might be possible to allocate the PTEs for each segment separately,
saving the memory currently filling the gaps. However we'd need to
check that's OK with the hardware, and that it actually saves memory.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
225d49050f [POWERPC] Allow for different IOMMU page sizes in cell IOMMU code
Make some preliminary changes to cell_iommu_alloc_ptab() to allow it to
take the page size as a parameter rather than assuming IOMMU_PAGE_SIZE.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
3d3e6da17d [POWERPC] Cell IOMMU: n_pte_pages is in 4K page units, not IOMMU_PAGE_SIZE
We use n_pte_pages to calculate the stride through the page tables, but
we also use it to set the NPPT value in the segment table entry. That is
defined as the number of 4K pages per segment, so we should calculate
it as such regardless of the IOMMU page size.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
7d432ff1b7 [POWERPC] Split setup of IOMMU stab and ptab, allocate dynamic/fixed ptabs separately
Currently the cell IOMMU code allocates the entire IOMMU page table in a
contiguous chunk. This is nice and tidy, but for machines with larger
amounts of RAM the page table allocation can fail due to it simply being
too large.

So split the segment table and page table setup routine, and arrange to
have the dynamic and fixed page tables allocated separately.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
edf441fb80 [POWERPC] Move allocation of cell IOMMU pad page
There's no need to allocate the pad page unless we're going to actually
use it - so move the allocation to where we know we're going to use it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
08e024272e [POWERPC] Remove unused pte_offset variable
The cell IOMMU code no longer needs to save the pte_offset variable
separately, it is incorporated into tbl->it_offset.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
0d7386ebff [POWERPC] Use it_offset not pte_offset in cell IOMMU code
The cell IOMMU tce build and free routines use pte_offset to convert
the index passed from the generic IOMMU code into a page table offset.

This takes into account the SPIDER_DMA_OFFSET which sets the top bit
of every DMA address.

However it doesn't cater for the IOMMU window starting at a non-zero
address, as the base of the window is not incorporated into pte_offset
at all.

As it turns out tbl->it_offset already contains the value we need, it
takes into account the base of the window and also pte_offset. So use
it instead!

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:15 +01:00
Michael Ellerman
f9660e8a6c [POWERPC] Clearup cell IOMMU fixed mapping terminology
It's called the fixed mapping, not the static mapping.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Jens Osterkamp
f3c1ed9720 [POWERPC] enable hardware watchpoints on cell blades
Ulrich Weigand has found that the hardware watchpoints on cell were not
working back in November :

http://ozlabs.org/pipermail/linuxppc-dev/2007-November/046135.html

This patch sets them during initialization.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Jens Osterkamp
9176c0b1f5 [POWERPC] move celleb DABRX definitions
This moves the private DABRX definitions for celleb from beat.h to
reg.h to make them usable for all.

Signed-off-by: Jens Osterkamp <jens@de.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Bob Nelson
101fd46a75 [POWERPC] OProfile: enable callgraph support for Cell
This patch enables OProfile callgraph support for the Cell processor.  The
original code was just calling a function to add the PC value, now it will
call a function that first checks the callgraph depth.  Callgraph is already
enabled on the other Power platforms.

Signed-off-by: Bob Nelson <rrnelson@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2008-03-03 08:03:14 +01:00
Paul Mackerras
b9c64498f5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jk/spufs into merge 2008-03-03 17:44:06 +11:00
Paul Mackerras
35d77ef1c0 Merge branch 'for-2.6.25' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge 2008-03-03 17:38:23 +11:00
Uwe Kleine-König
0c82d83cb0 [ARM] Fix freeing of page tables for ARM in free_pgd_slow
Since 2f569af (CONFIG_HIGHPTE vs. sub-page page tables.) pte_free() calls
pte_lock_deinit() and dec_zone_page_state().  So free_pgd_slow must not call
the latter two when calling the first.

Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-01 20:23:57 +00:00
Linus Torvalds
b73384f061 Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 4843/1: Add GCR_CLKBPB for PXA3xx
  [ARM] 4842/1: pxa: remove redundant IRQ saving/restoring in clk_pxa3xx_cken_*
  [ARM] 4841/1: pxa: fix typo in LCD platform data definition code for zylonite
  [ARM] 4840/1: pxa: fix the typo in get_irqnr_and_base
  [ARM] 4839/1: fixes kernel Oops in /dev/mem device driver for memory map with PHYS_OFF
  [ARM] eliminate MODULE_PARM() usage
  [ARM] 4838/1: Fix kexec for SA1100 machines
  [ARM] 4837/1: make __get_unaligned_*() return unsigned types
  [ARM] 4836/1: Make ATAGS_PROC depend on KEXEC
2008-02-29 15:18:44 -08:00
eric miao
ceee4f98f7 [ARM] 4842/1: pxa: remove redundant IRQ saving/restoring in clk_pxa3xx_cken_*
This is unnecessary since it is already protected by
spin_lock_irq{save, restore} in clock.c.

Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-29 22:47:27 +00:00
eric miao
7a987e82cd [ARM] 4841/1: pxa: fix typo in LCD platform data definition code for zylonite
Signed-off-by: eric miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-29 22:47:25 +00:00
Alexandre Rusev
9ae3ae0beb [ARM] 4839/1: fixes kernel Oops in /dev/mem device driver for memory map with PHYS_OFF
"cat /dev/mem" may cause kernel Oops for boards with PHYS_OFFSET != 0
because character device is mapped to addresses starting from zero
and there is no protection against such situation.
Patch just add this.

Signed-off-by: Alexandre Rusev <arusev@ru.mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-29 22:47:20 +00:00
Randy Dunlap
c710e39cbe [ARM] eliminate MODULE_PARM() usage
Convert debug-only (and removed) MODULE_PARM() to module_param().
Compiles cleanly (with DEBUG=1).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-29 22:47:17 +00:00
Uli Luckas
b98d729188 [ARM] 4836/1: Make ATAGS_PROC depend on KEXEC
On Wed, Feb 20, 2008 at 11:50:33AM +0100, Guennadi Liakhovetski wrote:
> arch/arm/kernel/atags.c uses for some reason the
> KEXEC_BOOT_PARAMS_SIZE macro, which is only defined if CONFIG_KEXEC
> is set. So, either this macro should be defined always, or another
> macro should be used, or ATAGS_PROC should depend on KEXEC.

As the procfs export of ATAGS is not meant as a stable, general purpose
ABI it shouldn't be an independent, general configuration option.

This patch make ATAGS_PROC depend on KEXEC

Signed-off-by: Uli Luckas <u.luckas@road.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-29 22:46:17 +00:00
Jeremy Fitzhardinge
d40e705903 xen: mask out SEP from CPUID
Fix 32-on-64 pvops kernel:

we don't want userspace using syscall/sysenter, even if the hypervisor
supports it, so mask it out from CPUID.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-29 18:55:43 +01:00
Ingo Molnar
b4ef95de00 x86: disable BTS ptrace extensions for now
revert the BTS ptrace extension for now.

based on general objections from Roland McGrath:

    http://lkml.org/lkml/2008/2/21/323

we'll let the BTS functionality cook some more and re-enable
it in v2.6.26. We'll leave the dead code around to help the
development of this code.

(X86_BTS is not defined at the moment)

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-29 18:55:42 +01:00
Thomas Gleixner
8be8f54bae x86: CPA: avoid split of alias mappings
avoid over-eager large page splitup.

When the target area needs to be split or is split already (ioremap)
then the current code enforces the split of large mappings in the alias
regions even if we could avoid it.

Use a separate variable processed in the cpa_data structure to carry
the number of pages which have been processed instead of reusing the
numpages variable. This keeps numpages intact and gives the alias code
a chance to keep large mappings intact.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-29 18:55:42 +01:00
Ingo Molnar
757265b8c5 x86: delay the export removal of init_mm
delay the removal of this symbol export by one more kernel release,
giving external modules such as VirtualBox a chance to stop using it.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-29 18:55:42 +01:00
Ingo Molnar
b16bf712f4 x86: fix leak un ioremap_page_range() failure
Jan Beulich noticed it during code review that if a driver's ioremap()
fails (say due to -ENOMEM) then we might leak the struct vm_area.

Free it properly.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-29 18:55:42 +01:00
Roland McGrath
f2dbe03dcc x86 vdso: fix build locale dependency
Priit Laes discovered that the sed command processing nm output was
sensitive to locale settings.  This was addressed in commit
03994f01e8 by using [:alnum:] in place of
[a-zA-Z0-9].

But that solution too is locale-dependent and may not always match
the identifiers it needs to.  The better fix is just to run sed et al
with a fixed locale setting in all builds.

Signed-off-by: Roland McGrath <roland@redhat.com>
CC: Priit Laes <plaes@plaes.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-29 18:55:39 +01:00
Thomas Gleixner
d67bbacb4b x86: restore vsyscall64 prochandler
a recent fix:

  commit ce28b9864b
  Author: Thomas Gleixner <tglx@linutronix.de>
  Date:   Wed Feb 20 23:57:30 2008 +0100

    x86: fix vsyscall wreckage

removed the broken /kernel/vsyscall64 handler completely.
This triggers the following debug check:

  sysctl table check failed: /kernel/vsyscall64  No proc_handler

Restore the sane part of the proc handler.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-29 18:55:39 +01:00
Roland McGrath
3d00daf446 x86: tls prevent_tail_call
Fix a kernel bug (vmware boot problem) reported by Tomasz Grobelny,
which occurs with certain .config variants and gccs.

The x86 TLS cleanup in commit efd1ca52d0
made the sys_set_thread_area and sys_get_thread_area functions ripe for
tail call optimization.  If the compiler chooses to use it for them, it
can clobber the user trap frame because these are asmlinkage functions.

Reported-by: Tomasz Grobelny <tomasz@grobelny.oswiecenia.net>
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-29 18:55:39 +01:00
Linus Torvalds
99642e211a Merge branch 'avr32-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
* 'avr32-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
  avr32: Fix OCD refcounting bug
  avr32: Call tick_nohz_{stop,restart}_sched_tick() in idle loop
  avr32: Use correct config symbol in atstk1004 board code
  avr32: Fix broken pte dump code in do_page_fault()
  AVR32: Define PAGE_SHARED
2008-02-29 08:43:27 -08:00
Linus Torvalds
84b9a77400 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (35 commits)
  Blackfin Serial Driver: Fix bug - Only insert UART rx char in timer task.
  Blackfin Serial Driver: Fix bug - update tx dma buffer tail before wake up processes.
  Blackfin Serial Driver: Fix bug - Increase buffer tail immediately before starting tx dma.
  [Blackfin] serial driver: Add flow control support to bf54x
  [Blackfin] serial driver: Fix bug Poll RTS/CTS status in DMA mode as well
  [Blackfin] serial driver: ADSP-BF52x arch/mach support
  [Blackfin] serial driver: use simpler comment headers and strip out information that is maintained in the scm's log
  [Blackfin] serial driver: rework break flood anomaly handling to be more robust/realistic about what we can actually work around
  [Blackfin] serial driver: fix bug - cache the bits of the LSR on systems where the LSR is read-to-clear
  [Blackfin] serial driver: fix bug - should not wait for the TFI bit, just clear it when tx stop.
  [Blackfin] serial driver: Fix bug serial driver in DMA mode spams history to console on shell restart
  [Blackfin] serial driver: Fix bug Free rx dma buffer in shutdown.
  [Blackfin] serial driver: Clean up UART DMA code.
  Blackfin Serial driver: Fix bug - serial driver in PIO mode cant handle input very quickly
  [Blackfin] arch: kill section mismatch warnings
  [Blackfin] arch: handle the most common L1 shrinkage case (L1 does not exist for a part) so that any parts labeled for L1 instead get placed into external memory sections
  [Blackfin] arch: add bfin_clear_PPIx_STATUS() helper funcs like we have for other parts
  [Blackfin] arch: make sure we have proper description/copyright/license lines
  [Blackfin] arch: Fix CONFIG_PM support for BF561
  [Blackfin] arch: Remove DPMC char driver option
  ...
2008-02-29 08:41:13 -08:00
Linus Torvalds
83afdf2464 Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  arch/sh/drivers/dma/dma-sh.c: Correct use of ! and &
  serial: Move asm-sh/sci.h to linux/serial_sci.h.
  sh: Fix up HAS_SR_RB typo in entry-macros.
  
  maple: fix device detection
  sh: fix rtc_resources setup for sh770x
  sh: heartbeat: ioremap is expected to succeed
  sh: Storage class should be before const qualifier
  maple: remove unused variable
  sh: SH5-103 needs to select CPU_SH5.
  sh: Rename SH-3 CCR3 reg to avoid synclink_cs clash.
2008-02-29 08:32:15 -08:00
Linus Torvalds
547598d3a9 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Adjust kernel PC validation test in fault handler.
  [SPARC64]: Loosen checks in exception table handling.
  [SPARC64]: Fix section mismatch from kernel_map_range
  [SPARC64]: Fix section mismatchs from dr_cpu_data
  [SPARC]: Fix build in arch/sparc/kernel/led.c
2008-02-29 08:29:30 -08:00
David S. Miller
7729d74ed5 [SPARC]: Add reboot_command[] extern decl to asm/system.h
Kill off some sparse warnings.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-28 21:53:20 -08:00
David S. Miller
c8edc89d24 [SPARC]: Mark linux_sparc_{fpu,chips} static.
Caught by sparse.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-28 21:46:59 -08:00
Andre Detsch
2a58aa33da [POWERPC] spufs: fix use time accounting on SPE-overcommit
The spu_runcntl_RW register is restored within spu_restore function.
So, at the end of spu_bind_context, the SPU context is not just loaded,
but running.

This change corrects the state switch to account the time as USER.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:48:55 +11:00
David S. Miller
be71716e46 [SPARC64]: Adjust kernel PC validation test in fault handler.
Because of the new futex validation init handler, we have
to accept faults in init section text as well as the normal
kernel text.

Thanks to Tom Callaway for the bug report.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-28 20:38:15 -08:00
Arnd Bergmann
c92a1acb67 [POWERPC] spufs: serialize SLB invalidation against SLB loading
There is a potential race between flushes of the entire SLB in the MFC
and the point where new entries are being established. The problem is
that we might put a ESID entry into the MFC SLB when the VSID entry has
just been cleared by the global flush.

This can be circumvented by holding the register_lock throughout both
the flushing and the creation of SLB entries.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:19:52 +11:00
Arnd Bergmann
cc4b7c1814 [POWERPC] spufs: invalidate SLB translation before adding a new entry
When we replace an SLB entry in the MFC after using up all the available
entries, there is a short window in which an incorrect entry is marked
as valid.

The problem is that the 'valid' bit is stored in the ESID, which is
always written after the VSID. Overwriting the VSID first will make the
original ESID entry point to the new VSID, which means that any
concurrent DMA accessing the old ESID ends up being redirected to the
new virtual address.  A few cycles later, we write the new ESID and
everything is fine again.

That race can be closed by writing a zero entry to the ESID first, which
makes sure that the VSID is not accessed until we write the new ESID.

Note that we don't actually need to invalidate the SLB entry using the
invalidation register, which would also flush any ERAT entries for that
segment, because the segment translation does not become invalid but is
only removed from the SLB cache.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:17:49 +11:00
Arnd Bergmann
fae9ca7915 [POWERPC] spufs: synchronize IRQ when disabling
There is a small race between the context save procedure
and the SPU interrupt handling, where we expect all interrupt
processing to have finished after disabling them, while
an interrupt is still being processed on another CPU.

The obvious fix is to call synchronize_irq() after disabling
the interrupts at the start of the context save procedure
to make sure we never access the SPU any more during an
ongoing save or even after that.

Thanks to Benjamin Herrenschmidt for pointing this out.

Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:16:48 +11:00
Jeremy Kerr
71791bee90 [POWERPC] spufs: fix order of sputrace thread IDs
Currently, we get the following output from sputrace:

[5.097935954] 1606: spufs_ps_nopfn__enter (thread = 1605, spu = -1)
[5.097958164] 1606: spufs_ps_nopfn__insert (thread = 1605, spu = 15)
[5.097973529] 1607: spufs_ps_nopfn__enter (thread = 1605, spu = -1)
[5.097989174] 1607: spufs_ps_nopfn__insert (thread = 1605, spu = 14)

Which leads me to believe that 160[67] is the current thread ID, and
1605 is the context backing the psmap.

However, the 'current' and 'owner' tids are reversed - the 'current'
tid is on the right. This change puts the current thread ID in the
left-hand column instead, and renames the right to 'ctxthread'.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-29 15:00:08 +11:00
Josh Boyer
fe57e8be9e [POWERPC] 4xx: Use correct board info structure in cuboot wrappers
Correct the remaining 44x cuboot wrappers to define TARGET_4xx as well.  This
creates the correct structure to use, including things like the second MAC
address.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-28 08:16:27 -06:00
Jeremy Kerr
0111a70186 [POWERPC] spufs: fix invalid scheduling of forgotten contexts
At present, we have a situation where a context with no owner is
re-scheduled by spu_forget:

	Thread 1: reading regs file	Thread 2: context owner

					spu_forget()
						- ctx->owner = NULL
						- set SPU_SCHED_WAS_ACTIVE

	spu_acquire_saved()
	- context is in saved state

	spu_release_saved()
	- SPU_SCHED_WAS_ACTIVE is set,
	  so spu_activate() the context,
	  which now has no owner

In spu_forget(), we shouldn't be requesting a re-schedule by setting
SPU_SCHED_WAS_ACTIVE. This change removes the set_bit in spu_forget(),
so that spu_release_saved() doesn't reinsert this destroyed context on
to the run queue.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-28 09:56:28 +11:00
Valentine Barshak
c91f91e5fb [POWERPC] 44x: add missing define TARGET_4xx and TARGET_440GX to cuboot-taishan
In order to get the proper boad info (bd_info) structure defined in ppcboot.h
both TARGET_4xx and TARGET_44x should be defined for all PowerPC 440 boards.
The 440GX boards also need TARGET_440GX defined since they have 4 EMACs and
there are 4 MAC addesses in bd_info passed by u-boot.

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-27 09:47:49 -06:00
Stefan Roese
3db3ba0347 [POWERPC] 4xx: Fix L1 cache size in katmai DTS
This patch changes the katmai (440SPe) L1 cache size to 32k. Some
whitespace issues are cleaned up too.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-27 09:47:11 -06:00
Stefan Roese
e33eb074cb [POWERPC] 4xx: Fix Haleakala PCIe compatibility problem in dts
Since the 4xx PCIe driver checks for 405ex compatibility, the
PCIe interface was not detected as it is currently defined as
"405exr" compatible. This patch changes it to "405ex".

The 405EX and 405EXr are identical exept that the 2nd PCIe and the
2nd EMAC interfaces are missing.

Signed-off-by: Stefan Roese <sr@denx.de>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
2008-02-27 09:43:15 -06:00
Haavard Skinnemoen
325d6f5593 avr32: Fix OCD refcounting bug
Iff the parent has TIF_DEBUG set, _and_ clone_flags includes
CLONE_PTRACE we should set the TIF_DEBUG flag for the child and
increment the ocd refcount. Otherwise, the TIF_DEBUG flag must be
unset.

Currently, the child inherits TIF_DEBUG from the parent before
copy_thread is called, so TIF_DEBUG may be already be set before we
determine whether the child is supposed to inherit debugging
capabilities from the parent or not. This means that ocd_enable()
won't increment the refcount, because TIF_DEBUG is already set, and
that TIF_DEBUG will be set for processes that aren't being debugged.

This leads to a refcounting asymmetry, which may show up as

------------[ cut here ]------------
Badness at arch/avr32/kernel/ocd.c:73
PC is at ocd_disable+0x34/0x60
LR is at put_lock_stats+0xa/0x20

as reported by David Brownell. Happens when strace'ing a process that
forks a new child process, e.g. "strace mount -tjffs2 mtd1 /mnt", and
subsequently killing the child process (e.g. "umount /mnt".)

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
2008-02-27 14:23:53 +01:00
Jeremy Kerr
d58831375d [POWERPC] spufs: fix context destruction during psmap fault
We have a small window where a spu context may be destroyed while
we're servicing a page fault (from another thread) to the context's
problem state mapping.

After we up_read() the mmap_sem, it's possible that the context is
destroyed by its owning thread, and so the later references to ctx
are invalid. This can maifest as a deadlock on the (now free()-ed)
context state mutex.

This change adds a reference to the context before we release the
mmap_sem, so that the context cannot be destroyed.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
2008-02-27 18:47:53 +11:00
David S. Miller
622eaec613 [SPARC64]: Loosen checks in exception table handling.
Some parts of the kernel now do things like do *_user() accesses while
set_fs(KERNEL_DS) that fault on purpose.

See, for example, the code added by changeset
a0c1e9073e ("futex: runtime enable pi
and robust functionality").

That trips up the ASI sanity checking we make in do_kernel_fault().

Just remove it for now.  Maybe we can add it back later with an added
conditional which looks at the current get_fs() value.

Signed-off-by: David S. Miller <davem@davemloft.net>
2008-02-26 17:30:02 -08:00
Julia Lawall
b2d7c7f7a6 arch/sh/drivers/dma/dma-sh.c: Correct use of ! and &
In commit e6bafba5b4, a bug was fixed that
involved converting !x & y to !(x & y).  The code below shows the same
pattern, and thus should perhaps be fixed in the same way.

This is not tested and clearly changes the semantics, so it is only
something to consider.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@ expression E1,E2; @@
(
  !E1 & !E2
|
- !E1 & E2
+ !(E1 & E2)
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-02-27 10:28:48 +09:00
Linus Torvalds
7c811e4b6a Merge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86: (24 commits)
  x86: no robust/pi futex for real i386 CPUs
  x86: fix boot failure on 486 due to TSC breakage
  x86: fix build on non-C locales.
  x86: make c_idle.work have a static address.
  x86: don't save unreliable stack trace entries
  x86: don't make swapper_pg_pmd global
  x86: don't print a warning when MTRR are blank and running in KVM
  x86: fix execve with -fstack-protect
  x86: fix vsyscall wreckage
  x86: rename KERNEL_TEXT_SIZE => KERNEL_IMAGE_SIZE
  x86: fix spontaneous reboot with allyesconfig bzImage
  x86: remove double-checking empty zero pages debug
  x86: notsc is ignored on common configurations
  x86/mtrr: fix kernel-doc missing notation
  x86: handle BIOSes which terminate e820 with CF=1 and no SMAP
  x86: add comments for NOPs
  x86: don't use P6_NOPs if compiling with CONFIG_X86_GENERIC
  x86: require family >= 6 if we are using P6 NOPs
  x86: do not promote TM3x00/TM5x00 to i686-class
  x86: hpet fix docbook comment
  ...
2008-02-26 07:44:09 -08:00
Mikael Pettersson
12c247a671 x86: fix boot failure on 486 due to TSC breakage
> Diffing dmesg between git7 and git8 doesn't sched any light since
 > git8 also removed the printouts of the x86 caps as they were being
 > initialised and updated. I'm currently adding those printouts back
 > in the hope of seeing where and when the caps get broken.

That turned out to be very illuminating:

 --- dmesg-2.6.24-git7	2008-02-24 18:01:25.295851000 +0100
 +++ dmesg-2.6.24-git8	2008-02-24 18:01:25.530358000 +0100
 ...
 CPU: After generic identify, caps: 00000003 00000000 00000000 00000000 00000000 00000000 00000000 00000000

 CPU: After all inits, caps: 00000003 00000000 00000000 00000000 00000000 00000000 00000000 00000000
+CPU: After applying cleared_cpu_caps, caps: 00000013 00000000 00000000 00000000 00000000 00000000 00000000 00000000

Notice how the TSC cap bit goes from Off to On.

(The first two lines are printout loops from -git7 forward-ported
to -git8, the third line is the same printout loop added just after
the xor-with-cleared_cpu_caps[] loop.)

Here's how the breakage occurs:
1. arch/x86/kernel/tsc_32.c:tsc_init() sees !cpu_has_tsc,
   so bails and calls setup_clear_cpu_cap(X86_FEATURE_TSC).
2. include/asm-x86/cpufeature.h:setup_clear_cpu_cap(bit) clears
   the bit in boot_cpu_data and sets it in cleared_cpu_caps
3. arch/x86/kernel/cpu/common.c:identify_cpu() XORs all caps
   in with cleared_cpu_caps
   HOWEVER, at this point c->x86_capability correctly has TSC
   Off, cleared_cpu_caps has TSC On, so the XOR incorrectly
   sets TSC to On in c->x86_capability, with disastrous results.

The real bug is that clearing bits with XOR only works if the
bits are known to be 1 prior to the XOR, and that's not true here.

A simple fix is to convert the XOR to AND-NOT instead. The following
patch does that, and allows my 486 to boot 2.6.25-rc kernels again.

[ mingo@elte.hu: fixed a similar bug in setup_64.c as well. ]

The breakage was introduced via commit 7d851c8d3d.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-26 12:56:04 +01:00
Priit Laes
03994f01e8 x86: fix build on non-C locales.
For some locales regex range [a-zA-Z] does not work as it is supposed to.
so we have to use [:alnum:] and [:xdigit:] to make it work as intended.

[1] http://en.wikipedia.org/wiki/Estonian_alphabet

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-26 12:56:02 +01:00
Glauber Costa
2b775a27c0 x86: make c_idle.work have a static address.
Currently, c_idle is declared in the stack, and thus, have no static address.

Peter Zijlstra points out this simple solution, in which c_idle.work
is initializated separatedly. Note that the INIT_WORK macro has a static
declaration of a key inside.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Acked-by: Peter Zijlstra <pzijlstr@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-26 12:56:02 +01:00
Vegard Nossum
1650743cdc x86: don't save unreliable stack trace entries
Currently, there is no way for print_stack_trace() to determine whether
a given stack trace entry was deemed reliable or not, simply because
save_stack_trace() does not record this information. (Perhaps needless
to say, this makes the saved stack traces A LOT harder to read, and
probably with no other benefits, since debugging features that use
save_stack_trace() most likely also require frame pointers, etc.)

This patch reverts to the old behaviour of only recording the reliable trace
entries for saved stack traces.

Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-26 12:55:58 +01:00
Adrian Bunk
ed2b7e2b1d x86: don't make swapper_pg_pmd global
There doesn't seem to be any reason for swapper_pg_pmd being global.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-26 12:55:58 +01:00
Joerg Roedel
4147c8747e x86: don't print a warning when MTRR are blank and running in KVM
Inside a KVM virtual machine the MTRRs are usually blank. This confuses Linux
and causes a warning message at boot. This patch removes that warning message
when running Linux as a KVM guest.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-02-26 12:55:57 +01:00