diff options
| author | Alan Cox <alc@FreeBSD.org> | 2009-03-11 14:55:04 +0000 |
|---|---|---|
| committer | Alan Cox <alc@FreeBSD.org> | 2009-03-11 14:55:04 +0000 |
| commit | 802e54dc1f4ac7ebd3cc3f0091d2b825780a3c51 (patch) | |
| tree | 4a61afbd4f35ad3821462f314da14d2ab3d83285 /sys | |
| parent | a6b6eb6b6baf7f7fbcdff79b75f273ab73991806 (diff) | |
Notes
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 24010d823cbc9..f9cbad2c6322a 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -3538,6 +3538,7 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len, src_pte = (pt_entry_t *)PHYS_TO_DMAP(srcptepaddr); src_pte = &src_pte[pmap_pte_index(addr)]; + dstmpte = NULL; while (addr < va_next) { pt_entry_t ptetemp; ptetemp = *src_pte; @@ -3545,9 +3546,11 @@ pmap_copy(pmap_t dst_pmap, pmap_t src_pmap, vm_offset_t dst_addr, vm_size_t len, * we only virtual copy managed pages */ if ((ptetemp & PG_MANAGED) != 0) { - dstmpte = pmap_allocpte(dst_pmap, addr, - M_NOWAIT); - if (dstmpte == NULL) + if (dstmpte != NULL && + dstmpte->pindex == pmap_pde_pindex(addr)) + dstmpte->wire_count++; + else if ((dstmpte = pmap_allocpte(dst_pmap, + addr, M_NOWAIT)) == NULL) break; dst_pte = (pt_entry_t *) PHYS_TO_DMAP(VM_PAGE_TO_PHYS(dstmpte)); |