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Create pmap_mask_set_locked on arm64

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Create a locked version of pmap_mask_set. We will need this for BTI
support.

Sponsored by:	Arm Ltd
This commit is contained in:
Andrew Turner 2023-04-12 13:09:06 +01:00
parent 73c48d9d8f
commit 421516f25e
1 changed files with 10 additions and 2 deletions
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12
sys/arm64/arm64/pmap.c
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@ -3837,14 +3837,14 @@ pmap_protect_l2(pmap_t pmap, pt_entry_t *l2, vm_offset_t sva, pt_entry_t mask,
* pmap and range
*/
static void
pmap_mask_set(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, pt_entry_t mask,
pmap_mask_set_locked(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, pt_entry_t mask,
pt_entry_t nbits, bool invalidate)
{
vm_offset_t va, va_next;
pd_entry_t *l0, *l1, *l2;
pt_entry_t *l3p, l3;
PMAP_LOCK(pmap);
PMAP_LOCK_ASSERT(pmap, MA_OWNED);
for (; sva < eva; sva = va_next) {
l0 = pmap_l0(pmap, sva);
if (pmap_load(l0) == 0) {
@ -3938,6 +3938,14 @@ pmap_mask_set(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, pt_entry_t mask,
if (va != va_next && invalidate)
pmap_s1_invalidate_range(pmap, va, sva, true);
}
}
static void
pmap_mask_set(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, pt_entry_t mask,
pt_entry_t nbits, bool invalidate)
{
PMAP_LOCK(pmap);
pmap_mask_set_locked(pmap, sva, eva, mask, nbits, invalidate);
PMAP_UNLOCK(pmap);
}