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* Clear the TLB on boot.

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* If a pte for a location given to pmap_enter_quick is valid, just give
  up - don't panic, even if the mapping is different.
This commit is contained in:
dfr 2001-10-24 21:22:08 +00:00
parent c0bfb6b8ea
commit aa73531f83
1 changed files with 7 additions and 4 deletions
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11
sys/ia64/ia64/pmap.c
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@ -256,6 +256,7 @@ static PMAP_INLINE void free_pv_entry __P((pv_entry_t pv));
static pv_entry_t get_pv_entry __P((void));
static void ia64_protection_init __P((void));
static void pmap_invalidate_all __P((pmap_t pmap));
static void pmap_remove_all __P((vm_page_t m));
static void pmap_enter_quick __P((pmap_t pmap, vm_offset_t va, vm_page_t m));
@ -391,6 +392,11 @@ pmap_bootstrap()
pvbootentries = (struct pv_entry *)
pmap_steal_memory(pvbootmax * sizeof(struct pv_entry));
pvbootnext = 0;
/*
* Clear out any random TLB entries left over from booting.
*/
pmap_invalidate_all(kernel_pmap);
}
/*
@ -1689,11 +1695,8 @@ pmap_enter_quick(pmap_t pmap, vm_offset_t va, vm_page_t m)
oldpmap = pmap_install(pmap);
pte = pmap_find_pte(va);
if (pte->pte_p) {
if (pmap_pte_pa(pte) != VM_PAGE_TO_PHYS(m))
panic("pmap_enter_quick: page is already mapped to different address");
if (pte->pte_p)
return;
}
PMAP_DEBUG_VA(va);
pmap_insert_entry(pmap, va, m);