From 2d684cd6d9cf0c6a0e28978362671b6e2d8fb56c Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 6 Feb 2008 22:39:44 +0100 Subject: [PATCH] x86: remove X2 workaround With the spurious handler fix, the X2 does not lock up anymore. Signed-off-by: Ingo Molnar --- arch/x86/mm/pageattr.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index 16ce841f08d..c870424aa9a 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -260,17 +260,6 @@ try_preserve_large_page(pte_t *kpte, unsigned long address, pgprot_t old_prot, new_prot; int level, do_split = 1; - /* - * An Athlon 64 X2 showed hard hangs if we tried to preserve - * largepages and changed the PSE entry from RW to RO. - * - * As AMD CPUs have a long series of erratas in this area, - * (and none of the known ones seem to explain this hang), - * disable this code until the hang can be debugged: - */ - if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) - return 1; - spin_lock_irqsave(&pgd_lock, flags); /* * Check for races, another CPU might have split this page -- 2.20.1