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Differential D14384 Diff 39735 head/sys/arm64/arm64/pmap.c

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head/sys/arm64/arm64/pmap.c

Show First 20 Lines • Show All 1,403 Lines • ▼ Show 20 Linespmap_pinit(pmap_t pmap)
vm_paddr_t l0phys; vm_paddr_t l0phys;
vm_page_t l0pt; vm_page_t l0pt;
/* /*
* allocate the l0 page * allocate the l0 page
*/ */
while ((l0pt = vm_page_alloc(NULL, 0, VM_ALLOC_NORMAL | while ((l0pt = vm_page_alloc(NULL, 0, VM_ALLOC_NORMAL |
VM_ALLOC_NOOBJ | VM_ALLOC_WIRED | VM_ALLOC_ZERO)) == NULL) VM_ALLOC_NOOBJ | VM_ALLOC_WIRED | VM_ALLOC_ZERO)) == NULL)
VM_WAIT; vm_wait(NULL);
l0phys = VM_PAGE_TO_PHYS(l0pt); l0phys = VM_PAGE_TO_PHYS(l0pt);
pmap->pm_l0 = (pd_entry_t *)PHYS_TO_DMAP(l0phys); pmap->pm_l0 = (pd_entry_t *)PHYS_TO_DMAP(l0phys);
if ((l0pt->flags & PG_ZERO) == 0) if ((l0pt->flags & PG_ZERO) == 0)
pagezero(pmap->pm_l0); pagezero(pmap->pm_l0);
pmap->pm_root.rt_root = 0; pmap->pm_root.rt_root = 0;
Show All 23 Lines_pmap_alloc_l3(pmap_t pmap, vm_pindex_t ptepindex, struct rwlock **lockp)
/* /*
* Allocate a page table page. * Allocate a page table page.
*/ */
if ((m = vm_page_alloc(NULL, ptepindex, VM_ALLOC_NOOBJ | if ((m = vm_page_alloc(NULL, ptepindex, VM_ALLOC_NOOBJ |
VM_ALLOC_WIRED | VM_ALLOC_ZERO)) == NULL) { VM_ALLOC_WIRED | VM_ALLOC_ZERO)) == NULL) {
if (lockp != NULL) { if (lockp != NULL) {
RELEASE_PV_LIST_LOCK(lockp); RELEASE_PV_LIST_LOCK(lockp);
PMAP_UNLOCK(pmap); PMAP_UNLOCK(pmap);
VM_WAIT; vm_wait(NULL);
PMAP_LOCK(pmap); PMAP_LOCK(pmap);
} }
/* /*
* Indicate the need to retry. While waiting, the page table * Indicate the need to retry. While waiting, the page table
* page may have been allocated. * page may have been allocated.
*/ */
return (NULL); return (NULL);
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