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| author |   Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> | 2019-03-05 15:46:29 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-05 21:07:18 -0800 |
| commit | 04a8645304500be88b3345b65fef7efe58016166 (patch) | |
| tree | ceb2ef0dd25791e44b236804f32ede418e89f79d /mm/mprotect.c | |
| parent | mm: update ptep_modify_prot_start/commit to take vm_area_struct as arg (diff) | |
| download | linux-dev-04a8645304500be88b3345b65fef7efe58016166.tar.xz linux-dev-04a8645304500be88b3345b65fef7efe58016166.zip | |
mm: update ptep_modify_prot_commit to take old pte value as arg
Architectures like ppc64 require to do a conditional tlb flush based on
the old and new value of pte. Enable that by passing old pte value as
the arg.
Link: http://lkml.kernel.org/r/20190116085035.29729-3-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | mm/mprotect.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/mprotect.c b/mm/mprotect.c index c89ce07923c8..028c724dcb1a 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -110,8 +110,8 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd, continue; } - ptent = ptep_modify_prot_start(vma, addr, pte); - ptent = pte_modify(ptent, newprot); + oldpte = ptep_modify_prot_start(vma, addr, pte); + ptent = pte_modify(oldpte, newprot); if (preserve_write) ptent = pte_mk_savedwrite(ptent); @@ -121,7 +121,7 @@ static unsigned long change_pte_range(struct vm_area_struct *vma, pmd_t *pmd, !(vma->vm_flags & VM_SOFTDIRTY))) { ptent = pte_mkwrite(ptent); } - ptep_modify_prot_commit(vma, addr, pte, ptent); + ptep_modify_prot_commit(vma, addr, pte, oldpte, ptent); pages++; } else if (IS_ENABLED(CONFIG_MIGRATION)) { swp_entry_t entry = pte_to_swp_entry(oldpte); |