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Make use of pmap_kenter instead of pmap_enter for kernel buffers.

This commit is contained in:
chris 2001-08-11 13:00:48 +00:00
parent 163b9983d7
commit c5de587666
1 changed files with 11 additions and 8 deletions
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19
sys/arch/arm/arm32/arm32_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: arm32_machdep.c,v 1.2 2001/07/28 18:12:43 chris Exp $ */
/* $NetBSD: arm32_machdep.c,v 1.3 2001/08/11 13:00:48 chris Exp $ */
/*
* Copyright (c) 1994-1998 Mark Brinicombe.
@ -346,10 +346,8 @@ cpu_startup()
/* msgbufphys was setup during the secondary boot strap */
for (loop = 0; loop < btoc(MSGBUFSIZE); ++loop)
pmap_enter(pmap_kernel(),
(vaddr_t)msgbufaddr + loop * NBPG,
msgbufphys + loop * NBPG, VM_PROT_READ|VM_PROT_WRITE,
VM_PROT_READ|VM_PROT_WRITE|PMAP_WIRED);
pmap_kenter_pa((vaddr_t)msgbufaddr + loop * NBPG,
msgbufphys + loop * NBPG, VM_PROT_READ|VM_PROT_WRITE);
pmap_update();
initmsgbuf(msgbufaddr, round_page(MSGBUFSIZE));
@ -398,6 +396,12 @@ cpu_startup()
vaddr_t curbuf;
struct vm_page *pg;
/*
* Each buffer has MAXBSIZE bytes of VM space allocated. Of
* that MAXBSIZE space, we allocate and map (base+1) pages
* for the first "residual" buffers, and then we allocate
* "base" pages for the rest.
*/
curbuf = (vaddr_t) buffers + (loop * MAXBSIZE);
curbufsize = NBPG * ((loop < residual) ? (base+1) : base);
@ -405,9 +409,8 @@ cpu_startup()
pg = uvm_pagealloc(NULL, 0, NULL, 0);
if (pg == NULL)
panic("cpu_startup: not enough memory for buffer cache");
pmap_enter(kernel_map->pmap, curbuf,
VM_PAGE_TO_PHYS(pg), VM_PROT_READ|VM_PROT_WRITE,
VM_PROT_READ|VM_PROT_WRITE|PMAP_WIRED);
pmap_kenter_pa(curbuf, VM_PAGE_TO_PHYS(pg),
VM_PROT_READ|VM_PROT_WRITE);
curbuf += PAGE_SIZE;
curbufsize -= PAGE_SIZE;
}