3 Commits

Author	SHA1	Message	Date
Andi Kleen	6ba9b7d8f0	x86: fix c_p_a() boot crash ... fix: > hm, i just found a failing 64-bit .config while testing your CPA > patchset: > > [ 1.916541] CPA mapping 4k 0 large 2048 gb 0 x 0[0-0] miss 0 > [ 1.919874] Unable to handle kernel paging request at 000000000335aea8 RIP: > [ 1.919874] [<ffffffff8021d2d3>] change_page_attr+0x3/0x61 > [ 1.919874] PGD 0 > [ 1.919874] Oops: 0000 [1] > [ 1.919874] CPU 0 This handles addresses which don't have a mem_map entry. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2008-01-30 13:33:52 +01:00
Ingo Molnar	851339b1ff	x86: clean up arch/x86/mm/pageattr-test.c ... fix 15 checkpatch warnings. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2008-01-30 13:33:43 +01:00
Andi Kleen	fa2d8369a1	x86: c_p_a(), add simple self test at boot ... Since change_page_attr() is tricky code it is good to have some regression test code. This patch maps and unmaps some random pages in the direct mapping at boot and then dumps the state and does some simple sanity checks. Add it with a CONFIG option. Signed-off-by: Andi Kleen <ak@suse.de> Acked-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>	2008-01-30 13:33:43 +01:00