diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2006-04-26 20:41:20 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2006-04-26 20:41:20 +0000 |
| commit | 16f2d84caad20a05f17ca97b62e4ef464738ab53 (patch) | |
| tree | 0c228f14006160b312e33784dfb6816dae63eb26 /sys/arch/m88k | |
| parent | 45081bef978728e622150b12e693ea2f577abf0a (diff) | |
In vmapbuf(), instead of invoking pmap_cache_ctrl() for each page, postpone
the call and process the whole range once.
Diffstat (limited to 'sys/arch/m88k')
| -rw-r--r-- | sys/arch/m88k/m88k/vm_machdep.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/sys/arch/m88k/m88k/vm_machdep.c b/sys/arch/m88k/m88k/vm_machdep.c index 901b047e8ac..429f10f81e9 100644 --- a/sys/arch/m88k/m88k/vm_machdep.c +++ b/sys/arch/m88k/m88k/vm_machdep.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vm_machdep.c,v 1.10 2005/12/11 21:45:30 miod Exp $ */ +/* $OpenBSD: vm_machdep.c,v 1.11 2006/04/26 20:41:19 miod Exp $ */ /* * Copyright (c) 1998 Steve Murphree, Jr. @@ -207,9 +207,10 @@ vmapbuf(bp, len) vsize_t len; { caddr_t addr; - vaddr_t kva, off; + vaddr_t ova, kva, off; paddr_t pa; struct pmap *pmap; + u_int pg; #ifdef DIAGNOSTIC if ((bp->b_flags & B_PHYS) == 0) @@ -228,7 +229,7 @@ vmapbuf(bp, len) * when the address gets a new mapping. */ - kva = uvm_km_valloc_wait(phys_map, len); + ova = kva = uvm_km_valloc_wait(phys_map, len); /* * Flush the TLB for the range [kva, kva + off]. Strictly speaking, @@ -239,19 +240,17 @@ vmapbuf(bp, len) cmmu_flush_tlb(cpu_number(), 1, kva, btoc(len)); bp->b_data = (caddr_t)(kva + off); - while (len > 0) { + for (pg = atop(len); pg != 0; pg--) { if (pmap_extract(pmap, (vaddr_t)addr, &pa) == FALSE) panic("vmapbuf: null page frame"); pmap_enter(vm_map_pmap(phys_map), kva, pa, VM_PROT_READ | VM_PROT_WRITE, VM_PROT_READ | VM_PROT_WRITE | PMAP_WIRED); - /* make sure snooping will be possible... */ - pmap_cache_ctrl(pmap_kernel(), kva, kva + PAGE_SIZE, - CACHE_GLOBAL); addr += PAGE_SIZE; kva += PAGE_SIZE; - len -= PAGE_SIZE; } + /* make sure snooping will be possible... */ + pmap_cache_ctrl(pmap_kernel(), ova, ova + len, CACHE_GLOBAL); pmap_update(pmap_kernel()); } |