Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2d684cd6d9cf0c6a0e28978362671b6e2d8fb56c
Commit:     2d684cd6d9cf0c6a0e28978362671b6e2d8fb56c
Parent:     d8b57bb700a73872fd06b891d7c9bc4cea1a6af4
Author:     Ingo Molnar <[EMAIL PROTECTED]>
AuthorDate: Wed Feb 6 22:39:44 2008 +0100
Committer:  Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Wed Feb 6 22:39:44 2008 +0100

    x86: remove X2 workaround
    
    With the spurious handler fix, the X2 does not lock up anymore.
    
    Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
---
 arch/x86/mm/pageattr.c |   11 -----------
 1 files changed, 0 insertions(+), 11 deletions(-)

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 16ce841..c870424 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
-
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