Differential D14266 Diff 39054 head/sys/riscv/riscv/pmap.c

Changeset View

Standalone View

head/sys/riscv/riscv/pmap.c

Show First 20 Lines • Show All 1,147 Lines • ▼ Show 20 Lines	if (m->pindex < NUPDE) {

l1 = pmap_l1(pmap, va);		l1 = pmap_l1(pmap, va);
phys = PTE_TO_PHYS(pmap_load(l1));		phys = PTE_TO_PHYS(pmap_load(l1));
pdpg = PHYS_TO_VM_PAGE(phys);		pdpg = PHYS_TO_VM_PAGE(phys);
pmap_unwire_l3(pmap, va, pdpg, free);		pmap_unwire_l3(pmap, va, pdpg, free);
}		}
pmap_invalidate_page(pmap, va);		pmap_invalidate_page(pmap, va);

/*		atomic_subtract_int(&vm_cnt.v_wire_count, 1);
* This is a release store so that the ordinary store unmapping
* the page table page is globally performed before TLB shoot-
* down is begun.
*/
atomic_subtract_rel_int(&vm_cnt.v_wire_count, 1);

/*		/*
* Put page on a list so that it is released after		* Put page on a list so that it is released after
* ALL TLB shootdown is done		* ALL TLB shootdown is done
*/		*/
pmap_add_delayed_free_list(m, free, TRUE);		pmap_add_delayed_free_list(m, free, TRUE);
}		}

▲ Show 20 Lines • Show All 127 Lines • ▼ Show 20 Lines	if (ptepindex >= NUPDE) {
pd_entry_t l1, l2;		pd_entry_t l1, l2;

l1index = ptepindex >> (L1_SHIFT - L2_SHIFT);		l1index = ptepindex >> (L1_SHIFT - L2_SHIFT);
l1 = &pmap->pm_l1[l1index];		l1 = &pmap->pm_l1[l1index];
if (pmap_load(l1) == 0) {		if (pmap_load(l1) == 0) {
/* recurse for allocating page dir */		/* recurse for allocating page dir */
if (_pmap_alloc_l3(pmap, NUPDE + l1index,		if (_pmap_alloc_l3(pmap, NUPDE + l1index,
lockp) == NULL) {		lockp) == NULL) {
--m->wire_count;		vm_page_unwire_noq(m);
atomic_subtract_int(&vm_cnt.v_wire_count, 1);
vm_page_free_zero(m);		vm_page_free_zero(m);
return (NULL);		return (NULL);
}		}
} else {		} else {
phys = PTE_TO_PHYS(pmap_load(l1));		phys = PTE_TO_PHYS(pmap_load(l1));
pdpg = PHYS_TO_VM_PAGE(phys);		pdpg = PHYS_TO_VM_PAGE(phys);
pdpg->wire_count++;		pdpg->wire_count++;
}		}
▲ Show 20 Lines • Show All 68 Lines • ▼ Show 20 Lines
{		{
vm_page_t m;		vm_page_t m;

KASSERT(pmap->pm_stats.resident_count == 0,		KASSERT(pmap->pm_stats.resident_count == 0,
("pmap_release: pmap resident count %ld != 0",		("pmap_release: pmap resident count %ld != 0",
pmap->pm_stats.resident_count));		pmap->pm_stats.resident_count));

m = PHYS_TO_VM_PAGE(DMAP_TO_PHYS((vm_offset_t)pmap->pm_l1));		m = PHYS_TO_VM_PAGE(DMAP_TO_PHYS((vm_offset_t)pmap->pm_l1));
m->wire_count--;		vm_page_unwire_noq(m);
atomic_subtract_int(&vm_cnt.v_wire_count, 1);
vm_page_free_zero(m);		vm_page_free_zero(m);

/* Remove pmap from the allpmaps list */		/* Remove pmap from the allpmaps list */
LIST_REMOVE(pmap, pm_list);		LIST_REMOVE(pmap, pm_list);

/* Remove kernel pagetables */		/* Remove kernel pagetables */
bzero(pmap->pm_l1, PAGE_SIZE);		bzero(pmap->pm_l1, PAGE_SIZE);
}		}
▲ Show 20 Lines • Show All 1,884 Lines • Show Last 20 Lines