diff options
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 642ff59..c684e6d 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -1724,10 +1724,12 @@ pmap_growkernel(vm_offset_t addr) if (pde == NULL) { /* We need a new PDP entry */ nkpg = vm_page_alloc(NULL, kernel_vm_end >> PDPSHIFT, - VM_ALLOC_NOOBJ | VM_ALLOC_SYSTEM | VM_ALLOC_WIRED); + VM_ALLOC_INTERRUPT | VM_ALLOC_NOOBJ | + VM_ALLOC_WIRED | VM_ALLOC_ZERO); if (nkpg == NULL) panic("pmap_growkernel: no memory to grow kernel"); - pmap_zero_page(nkpg); + if ((nkpg->flags & PG_ZERO) == 0) + pmap_zero_page(nkpg); paddr = VM_PAGE_TO_PHYS(nkpg); newpdp = (pdp_entry_t) (paddr | PG_V | PG_RW | PG_A | PG_M); @@ -1744,10 +1746,12 @@ pmap_growkernel(vm_offset_t addr) } nkpg = vm_page_alloc(NULL, pmap_pde_pindex(kernel_vm_end), - VM_ALLOC_NOOBJ | VM_ALLOC_SYSTEM | VM_ALLOC_WIRED); + VM_ALLOC_INTERRUPT | VM_ALLOC_NOOBJ | VM_ALLOC_WIRED | + VM_ALLOC_ZERO); if (nkpg == NULL) panic("pmap_growkernel: no memory to grow kernel"); - pmap_zero_page(nkpg); + if ((nkpg->flags & PG_ZERO) == 0) + pmap_zero_page(nkpg); paddr = VM_PAGE_TO_PHYS(nkpg); newpdir = (pd_entry_t) (paddr | PG_V | PG_RW | PG_A | PG_M); *pmap_pde(kernel_pmap, kernel_vm_end) = newpdir; |
