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| author | Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2012-10-09 01:30:24 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-09 09:22:31 +0200 |
| commit | 1ae1c1d09f220ded48ee9a7d91a65e94f95c4af1 (patch) | |
| tree | 3c6e53c880a946dccb33b81116ca048800b28214 /arch/s390/include/asm/hugetlb.h | |
| parent | thp, s390: disable thp for kvm host on s390 (diff) | |
| download | linux-1ae1c1d09f220ded48ee9a7d91a65e94f95c4af1.tar.xz linux-1ae1c1d09f220ded48ee9a7d91a65e94f95c4af1.zip | |
thp, s390: architecture backend for thp on s390
This implements the architecture backend for transparent hugepages
on s390.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390/include/asm/hugetlb.h')
| -rw-r--r-- | arch/s390/include/asm/hugetlb.h | 18 |
1 files changed, 1 insertions, 17 deletions
diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h index fc322421b1cc..593753ee07f3 100644 --- a/arch/s390/include/asm/hugetlb.h +++ b/arch/s390/include/asm/hugetlb.h @@ -78,23 +78,6 @@ static inline void __pmd_csp(pmd_t *pmdp) " csp %1,%3" : "=m" (*pmdp) : "d" (reg2), "d" (reg3), "d" (reg4), "m" (*pmdp) : "cc"); - pmd_val(*pmdp) = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY; -} - -static inline void __pmd_idte(unsigned long address, pmd_t *pmdp) -{ - unsigned long sto = (unsigned long) pmdp - - pmd_index(address) * sizeof(pmd_t); - - if (!(pmd_val(*pmdp) & _SEGMENT_ENTRY_INV)) { - asm volatile( - " .insn rrf,0xb98e0000,%2,%3,0,0" - : "=m" (*pmdp) - : "m" (*pmdp), "a" (sto), - "a" ((address & HPAGE_MASK)) - ); - } - pmd_val(*pmdp) = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY; } static inline void huge_ptep_invalidate(struct mm_struct *mm, @@ -106,6 +89,7 @@ static inline void huge_ptep_invalidate(struct mm_struct *mm, __pmd_idte(address, pmdp); else __pmd_csp(pmdp); + pmd_val(*pmdp) = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY; } static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, |