diff options
| author | kib <kib@FreeBSD.org> | 2017-02-26 10:53:02 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2017-02-26 10:53:02 +0000 |
| commit | 9819b36e61acfd5bb1d5649008d08e8a4426eb55 (patch) | |
| tree | a000319ded9542ca2bb5e82789f2d20e2d13f53a /sys/arm/arm | |
| parent | 1a38ee169aa4c23a64b45b79b51a953808108166 (diff) | |
| download | FreeBSD-src-9819b36e61acfd5bb1d5649008d08e8a4426eb55.zip FreeBSD-src-9819b36e61acfd5bb1d5649008d08e8a4426eb55.tar.gz | |
MFC r313933, r313939, r313966:
Microoptimize pmap_protect_pde() on amd64, i386 and
pmap_protect_pte1() on armv6.
Diffstat (limited to 'sys/arm/arm')
| -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 3a13e8a..2894c35 100644 --- a/sys/arm/arm/pmap-v6.c +++ b/sys/arm/arm/pmap-v6.c @@ -4806,12 +4806,11 @@ 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; |
