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| author | Konstantin Belousov <kib@FreeBSD.org> | 2017-02-19 20:40:07 +0000 |
|---|---|---|
| committer | Konstantin Belousov <kib@FreeBSD.org> | 2017-02-19 20:40:07 +0000 |
| commit | 901b55218f26a7c5c15414abcb5da98f33aaf1b4 (patch) | |
| tree | 7e20ad05bab7b1d25544aad698619edbe71f1aa9 /sys | |
| parent | 5057f6560663c73932639c33d7b138c634d3ef99 (diff) | |
| download | src-901b55218f26a7c5c15414abcb5da98f33aaf1b4.tar.gz src-901b55218f26a7c5c15414abcb5da98f33aaf1b4.zip | |
MFamd64 r313933: microoptimize pmap_protect_pte1().
Noted by: alc
Tested by: mmel
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Notes
Notes:
svn path=/head/; revision=313966
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arm/arm/pmap-v6.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/sys/arm/arm/pmap-v6.c b/sys/arm/arm/pmap-v6.c index d8645b718cd2..c25bbd061dad 100644 --- a/sys/arm/arm/pmap-v6.c +++ b/sys/arm/arm/pmap-v6.c @@ -4799,12 +4799,11 @@ pmap_protect_pte1(pmap_t pmap, pt1_entry_t *pte1p, vm_offset_t sva, ("%s: sva is not 1mpage aligned", __func__)); opte1 = npte1 = pte1_load(pte1p); - if (pte1_is_managed(opte1)) { + if (pte1_is_managed(opte1) && pte1_is_dirty(opte1)) { eva = sva + PTE1_SIZE; for (va = sva, m = PHYS_TO_VM_PAGE(pte1_pa(opte1)); va < eva; va += PAGE_SIZE, m++) - if (pte1_is_dirty(opte1)) - vm_page_dirty(m); + vm_page_dirty(m); } if ((prot & VM_PROT_WRITE) == 0) npte1 |= PTE1_RO | PTE1_NM; |