This is a note to let you know that I've just added the patch titled
sparc: huge_ptep_set_* functions need to call set_huge_pte_at()
to the 3.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
sparc-huge_ptep_set_-functions-need-to-call-set_huge_pte_at.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 3a7fbd649711a2bafa3ade1875b2b9b8b2ddc813 Mon Sep 17 00:00:00 2001
From: Dave Kleikamp <[email protected]>
Date: Mon, 17 Dec 2012 11:52:47 -0600
Subject: sparc: huge_ptep_set_* functions need to call set_huge_pte_at()
From: Dave Kleikamp <[email protected]>
[ Upstream commit 6cb9c3697585c47977c42c5cc1b9fc49247ac530 ]
Modifying the huge pte's requires that all the underlying pte's be
modified.
Version 2: added missing flush_tlb_page()
Signed-off-by: Dave Kleikamp <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: [email protected]
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/sparc/include/asm/hugetlb.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
--- a/arch/sparc/include/asm/hugetlb.h
+++ b/arch/sparc/include/asm/hugetlb.h
@@ -58,14 +58,20 @@ static inline pte_t huge_pte_wrprotect(p
static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
unsigned long addr, pte_t *ptep)
{
- ptep_set_wrprotect(mm, addr, ptep);
+ pte_t old_pte = *ptep;
+ set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
}
static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep,
pte_t pte, int dirty)
{
- return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
+ int changed = !pte_same(*ptep, pte);
+ if (changed) {
+ set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
+ flush_tlb_page(vma, addr);
+ }
+ return changed;
}
static inline pte_t huge_ptep_get(pte_t *ptep)
Patches currently in stable-queue which might be from [email protected]
are
queue-3.4/sparc-huge_ptep_set_-functions-need-to-call-set_huge_pte_at.patch
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