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When UMA_MD_SMALL_ALLOC is defined, pmap_kextract will be called

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for direct-mapped addresses. Assume that any address less than KVA
is one of these and return it. Also assert that an address is KVA
does have a valid mapping - callers of pmap_kextract don't check
the return value, since they assume that they have a valid virtual
address.
This commit is contained in:
Peter Grehan 2004-01-29 00:45:41 +00:00
parent db55e39aa1
commit 0efd0097cb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=125185
3 changed files with 30 additions and 0 deletions
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10
sys/powerpc/aim/mmu_oea.c
View File

@ -1222,7 +1222,17 @@ pmap_kextract(vm_offset_t va)
{
struct pvo_entry *pvo;
#ifdef UMA_MD_SMALL_ALLOC
/*
* Allow direct mappings
*/
if (va < VM_MIN_KERNEL_ADDRESS) {
return (va);
}
#endif
pvo = pmap_pvo_find_va(kernel_pmap, va & ~ADDR_POFF, NULL);
KASSERT(pvo != NULL, ("pmap_kextract: no addr found"));
if (pvo == NULL) {
return (0);
}

10
sys/powerpc/powerpc/mmu_oea.c
View File

@ -1222,7 +1222,17 @@ pmap_kextract(vm_offset_t va)
{
struct pvo_entry *pvo;
#ifdef UMA_MD_SMALL_ALLOC
/*
* Allow direct mappings
*/
if (va < VM_MIN_KERNEL_ADDRESS) {
return (va);
}
#endif
pvo = pmap_pvo_find_va(kernel_pmap, va & ~ADDR_POFF, NULL);
KASSERT(pvo != NULL, ("pmap_kextract: no addr found"));
if (pvo == NULL) {
return (0);
}

10
sys/powerpc/powerpc/pmap.c
View File

@ -1222,7 +1222,17 @@ pmap_kextract(vm_offset_t va)
{
struct pvo_entry *pvo;
#ifdef UMA_MD_SMALL_ALLOC
/*
* Allow direct mappings
*/
if (va < VM_MIN_KERNEL_ADDRESS) {
return (va);
}
#endif
pvo = pmap_pvo_find_va(kernel_pmap, va & ~ADDR_POFF, NULL);
KASSERT(pvo != NULL, ("pmap_kextract: no addr found"));
if (pvo == NULL) {
return (0);
}