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Patch from chuq for uvm r/w map oscillation bug.

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Fixes the XalphaNetBSD slowdown.
This commit is contained in:
ross 1999-10-24 16:29:23 +00:00
parent ef0cc9a3f4
commit 0f2e70dfa4
1 changed files with 6 additions and 4 deletions
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10
sys/uvm/uvm_device.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_device.c,v 1.16 1999/04/08 10:26:21 drochner Exp $ */
/* $NetBSD: uvm_device.c,v 1.17 1999/10/24 16:29:23 ross Exp $ */
/*
*
@ -415,6 +415,7 @@ udv_fault(ufi, vaddr, pps, npages, centeridx, fault_type, access_type, flags)
int lcv, retval, mdpgno;
dev_t device;
int (*mapfn) __P((dev_t, int, int));
vm_prot_t mapprot;
UVMHIST_FUNC("udv_fault"); UVMHIST_CALLED(maphist);
UVMHIST_LOG(maphist," flags=%d", flags,0,0,0);
@ -473,11 +474,12 @@ udv_fault(ufi, vaddr, pps, npages, centeridx, fault_type, access_type, flags)
break;
}
paddr = pmap_phys_address(mdpgno);
mapprot = ufi->entry->protection;
UVMHIST_LOG(maphist,
" MAPPING: device: pm=0x%x, va=0x%x, pa=0x%x, at=%d",
ufi->orig_map->pmap, curr_va, (int)paddr, access_type);
pmap_enter(ufi->orig_map->pmap, curr_va, paddr, access_type, 0,
access_type);
ufi->orig_map->pmap, curr_va, (int)paddr, mapprot);
pmap_enter(ufi->orig_map->pmap, curr_va, paddr, mapprot, 0,
mapprot);
}