PWN-Hunter/android_kernel_xiaomi_sdm845
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[PATCH] x86-64: Remove apic_write_around from smpboot.c

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We don't do workarounds for ancient hardware bugs.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2005-09-12 18:49:23 +02:00 committed by Linus Torvalds
parent affc9b8449
commit c1507eb2ee
1 changed files with 8 additions and 9 deletions
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17
arch/x86_64/kernel/smpboot.c
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@ -540,8 +540,8 @@ static void inquire_remote_apic(int apicid)
*/ */
apic_wait_icr_idle(); apic_wait_icr_idle();
apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(apicid)); apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(apicid));
apic_write_around(APIC_ICR, APIC_DM_REMRD | regs[i]); apic_write(APIC_ICR, APIC_DM_REMRD | regs[i]);
timeout = 0; timeout = 0;
do { do {
@ -574,12 +574,12 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta
/* /*
* Turn INIT on target chip * Turn INIT on target chip
*/ */
apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid)); apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
/* /*
* Send IPI * Send IPI
*/ */
apic_write_around(APIC_ICR, APIC_INT_LEVELTRIG | APIC_INT_ASSERT apic_write(APIC_ICR, APIC_INT_LEVELTRIG | APIC_INT_ASSERT
| APIC_DM_INIT); | APIC_DM_INIT);
Dprintk("Waiting for send to finish...\n"); Dprintk("Waiting for send to finish...\n");
@ -595,10 +595,10 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta
Dprintk("Deasserting INIT.\n"); Dprintk("Deasserting INIT.\n");
/* Target chip */ /* Target chip */
apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid)); apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
/* Send IPI */ /* Send IPI */
apic_write_around(APIC_ICR, APIC_INT_LEVELTRIG | APIC_DM_INIT); apic_write(APIC_ICR, APIC_INT_LEVELTRIG | APIC_DM_INIT);
Dprintk("Waiting for send to finish...\n"); Dprintk("Waiting for send to finish...\n");
timeout = 0; timeout = 0;
@ -640,12 +640,11 @@ static int __cpuinit wakeup_secondary_via_INIT(int phys_apicid, unsigned int sta
*/ */
/* Target chip */ /* Target chip */
apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid)); apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(phys_apicid));
/* Boot on the stack */ /* Boot on the stack */
/* Kick the second */ /* Kick the second */
apic_write_around(APIC_ICR, APIC_DM_STARTUP apic_write(APIC_ICR, APIC_DM_STARTUP | (start_rip >> 12));
| (start_rip >> 12));
/* /*
* Give the other CPU some time to accept the IPI. * Give the other CPU some time to accept the IPI.