Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=8b14cb9953c6b569327e9372718cff09a98f9589
Commit: 8b14cb9953c6b569327e9372718cff09a98f9589
Parent: cb00e99c0abd844b884c64c6b54aa3b7d345ebb1
Author: Zachary Amsden <[EMAIL PROTECTED]>
AuthorDate: Tue Aug 21 18:30:36 2007 -0700
Committer: Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Wed Aug 22 11:10:47 2007 -0700
Fix lazy mode vmalloc synchronization for paravirt
Touching vmalloc memory in the middle of a lazy mode update can generate
a kernel PDE update, which must be flushed immediately. The fix is to
leave lazy mode when doing a vmalloc sync.
Signed-off-by: Zachary Amsden <[EMAIL PROTECTED]>
Acked-by: Jeremy Fitzhardinge <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
arch/i386/mm/fault.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/i386/mm/fault.c b/arch/i386/mm/fault.c
index 01ffdd4..fcb38e7 100644
--- a/arch/i386/mm/fault.c
+++ b/arch/i386/mm/fault.c
@@ -249,9 +249,10 @@ static inline pmd_t *vmalloc_sync_one(pgd_t *pgd, unsigned
long address)
pmd_k = pmd_offset(pud_k, address);
if (!pmd_present(*pmd_k))
return NULL;
- if (!pmd_present(*pmd))
+ if (!pmd_present(*pmd)) {
set_pmd(pmd, *pmd_k);
- else
+ arch_flush_lazy_mmu_mode();
+ } else
BUG_ON(pmd_page(*pmd) != pmd_page(*pmd_k));
return pmd_k;
}
-
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