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Index: head/sys/amd64/amd64/pmap.c
===================================================================
--- head/sys/amd64/amd64/pmap.c
+++ head/sys/amd64/amd64/pmap.c
@@ -5202,8 +5202,7 @@
pmap_protect_pde(pmap_t pmap, pd_entry_t *pde, vm_offset_t sva, vm_prot_t prot)
{
pd_entry_t newpde, oldpde;
- vm_offset_t eva, va;
- vm_page_t m;
+ vm_page_t m, mt;
boolean_t anychanged;
pt_entry_t PG_G, PG_M, PG_RW;
@@ -5217,15 +5216,15 @@
anychanged = FALSE;
retry:
oldpde = newpde = *pde;
- if ((oldpde & (PG_MANAGED | PG_M | PG_RW)) ==
- (PG_MANAGED | PG_M | PG_RW)) {
- eva = sva + NBPDR;
- for (va = sva, m = PHYS_TO_VM_PAGE(oldpde & PG_PS_FRAME);
- va < eva; va += PAGE_SIZE, m++)
- vm_page_dirty(m);
- }
- if ((prot & VM_PROT_WRITE) == 0)
+ if ((prot & VM_PROT_WRITE) == 0) {
+ if ((oldpde & (PG_MANAGED | PG_M | PG_RW)) ==
+ (PG_MANAGED | PG_M | PG_RW)) {
+ m = PHYS_TO_VM_PAGE(oldpde & PG_PS_FRAME);
+ for (mt = m; mt < &m[NBPDR / PAGE_SIZE]; mt++)
+ vm_page_dirty(mt);
+ }
newpde &= ~(PG_RW | PG_M);
+ }
if ((prot & VM_PROT_EXECUTE) == 0)
newpde |= pg_nx;
if (newpde != oldpde) {
Index: head/sys/i386/i386/pmap.c
===================================================================
--- head/sys/i386/i386/pmap.c
+++ head/sys/i386/i386/pmap.c
@@ -3251,8 +3251,7 @@
pmap_protect_pde(pmap_t pmap, pd_entry_t *pde, vm_offset_t sva, vm_prot_t prot)
{
pd_entry_t newpde, oldpde;
- vm_offset_t eva, va;
- vm_page_t m;
+ vm_page_t m, mt;
boolean_t anychanged;
PMAP_LOCK_ASSERT(pmap, MA_OWNED);
@@ -3261,15 +3260,15 @@
anychanged = FALSE;
retry:
oldpde = newpde = *pde;
- if ((oldpde & (PG_MANAGED | PG_M | PG_RW)) ==
- (PG_MANAGED | PG_M | PG_RW)) {
- eva = sva + NBPDR;
- for (va = sva, m = PHYS_TO_VM_PAGE(oldpde & PG_PS_FRAME);
- va < eva; va += PAGE_SIZE, m++)
- vm_page_dirty(m);
- }
- if ((prot & VM_PROT_WRITE) == 0)
+ if ((prot & VM_PROT_WRITE) == 0) {
+ if ((oldpde & (PG_MANAGED | PG_M | PG_RW)) ==
+ (PG_MANAGED | PG_M | PG_RW)) {
+ m = PHYS_TO_VM_PAGE(oldpde & PG_PS_FRAME);
+ for (mt = m; mt < &m[NBPDR / PAGE_SIZE]; mt++)
+ vm_page_dirty(mt);
+ }
newpde &= ~(PG_RW | PG_M);
+ }
#ifdef PMAP_PAE_COMP
if ((prot & VM_PROT_EXECUTE) == 0 && !i386_read_exec)
newpde |= pg_nx;

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