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x86: remove X2 workaround 

With the spurious handler fix, the X2 does not lock up anymore.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
hifive-unleashed-5.1
Ingo Molnar 2008-02-06 22:39:44 +01:00
parent d8b57bb700
commit 2d684cd6d9
1 changed files with 0 additions and 11 deletions
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11
arch/x86/mm/pageattr.c
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@ -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