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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-01-30 11:58:26 +1100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-01-30 11:58:26 +1100 |
| commit | 8e5d573a6acfb129513cc929a731eeae37eddeee (patch) | |
| tree | d30977997a8dc4574cf10ea184866b7b3c9db8b8 | |
| parent | d6a3bf93d69aefa2d81b64ece799799f44acd925 (diff) | |
| parent | be3286507dab888d4aad9f91fd6ff5202b24cd5b (diff) | |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull one s390 fix from Martin Schwidefsky:
"Another transparent huge page fix, we need to define a s390 variant
for pmdp_set_wrprotect to flush the TLB for the huge page correctly."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/thp: implement pmdp_set_wrprotect()
| -rw-r--r-- | arch/s390/include/asm/pgtable.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index c1d7930a82f..098adbb6266 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1365,6 +1365,18 @@ static inline void pmdp_invalidate(struct vm_area_struct *vma, __pmd_idte(address, pmdp); } +#define __HAVE_ARCH_PMDP_SET_WRPROTECT +static inline void pmdp_set_wrprotect(struct mm_struct *mm, + unsigned long address, pmd_t *pmdp) +{ + pmd_t pmd = *pmdp; + + if (pmd_write(pmd)) { + __pmd_idte(address, pmdp); + set_pmd_at(mm, address, pmdp, pmd_wrprotect(pmd)); + } +} + static inline pmd_t mk_pmd_phys(unsigned long physpage, pgprot_t pgprot) { pmd_t __pmd; |