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In pmap_map(), do not do TLB shootdowns. It is only used for kernel dumps,

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at which point other CPUs are likely halted, and the addresses mappped
are temporary anyway.
This commit is contained in:
fvdl 2005-08-04 19:29:26 +00:00
parent b7bb8fccf1
commit ff4290fdee
1 changed files with 13 additions and 4 deletions
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17
sys/arch/amd64/amd64/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.21 2005/07/04 12:06:14 blymn Exp $ */
/* $NetBSD: pmap.c,v 1.22 2005/08/04 19:29:26 fvdl Exp $ */
/*
*
@ -108,7 +108,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.21 2005/07/04 12:06:14 blymn Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.22 2005/08/04 19:29:26 fvdl Exp $");
#ifndef __x86_64__
#include "opt_cputype.h"
@ -2250,9 +2250,10 @@ pmap_virtual_space(startp, endp)
}
/*
* pmap_map: map a range of PAs into kvm
* pmap_map: map a range of PAs into kvm.
*
* => used during crash dump
* => does not do TLB shootdowns
* => XXX: pmap_map() should be phased out?
*/
@ -2262,8 +2263,16 @@ pmap_map(va, spa, epa, prot)
paddr_t spa, epa;
vm_prot_t prot;
{
pt_entry_t *pte, opte, npte;
while (spa < epa) {
pmap_enter(pmap_kernel(), va, spa, prot, 0);
pte = kvtopte(va);
npte = spa | ((prot & VM_PROT_WRITE) ? PG_RW : PG_RO) |
PG_V | pmap_pg_g;
opte = pmap_pte_set(pte, npte);
if (pmap_valid_entry(opte))
pmap_update_pg(va);
va += PAGE_SIZE;
spa += PAGE_SIZE;
}