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Read & clear fault status register after probing translation.

This commit is contained in:
pk 1999-01-24 10:12:22 +00:00
parent 84826812fc
commit 922c3eb8f9
1 changed files with 8 additions and 5 deletions
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13
sys/arch/sparc/sparc/trap.c
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@ -1,4 +1,4 @@
/* $NetBSD: trap.c,v 1.79 1999/01/20 00:15:07 pk Exp $ */
/* $NetBSD: trap.c,v 1.80 1999/01/24 10:12:22 pk Exp $ */
/*
* Copyright (c) 1996
@ -968,7 +968,8 @@ mem_access_fault4m(type, sfsr, sfva, tf)
if ((lda((sfva & 0xFFFFF000) | ASI_SRMMUFP_LN, ASI_SRMMUFP) &
SRMMU_TETYPE) != SRMMU_TEPTE)
goto fault; /* Translation bad */
else goto out; /* Translation OK, retry operation */
lda(SRMMU_SFSR, ASI_SRMMU);
goto out; /* Translation OK, retry operation */
}
va = trunc_page(sfva);
@ -984,12 +985,14 @@ mem_access_fault4m(type, sfsr, sfva, tf)
* do a useless VM read.
* XXX: Is this really necessary?
*/
if (mmumod == SUN4M_MMU_HS) { /* On HS, we have va for both */
if (cpuinfo.cpu_type == CPUTYP_HS_MBUS) {
/* On HS, we have va for both */
vm = p->p_vmspace;
#if defined(UVM)
if (uvm_fault(kernel_map, trunc_page(pc),
if (uvm_fault(&vm->vm_map, trunc_page(pc),
0, VM_PROT_READ) != KERN_SUCCESS)
#else
if (vm_fault(kernel_map, trunc_page(pc),
if (vm_fault(&vm->vm_map, trunc_page(pc),
VM_PROT_READ, 0) != KERN_SUCCESS)
#endif
#ifdef DEBUG