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Expand the range of the vm86pcb_lock so that it protects manipulations

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to the global vm86 page table as well.

Spotted by: Kazu
This commit is contained in:
Jonathan Lemon 2001-07-19 15:33:13 +00:00
parent 98417323dd
commit 4834ec4db9
1 changed files with 2 additions and 2 deletions
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4
sys/i386/i386/vm86.c
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@ -597,6 +597,7 @@ vm86_datacall(intnum, vmf, vmc)
u_int page;
int i, entry, retval;
mtx_lock(&vm86pcb_lock);
for (i = 0; i < vmc->npages; i++) {
page = vtophys(vmc->pmap[i].kva & PG_FRAME);
entry = vmc->pmap[i].pte_num;
@ -605,14 +606,13 @@ vm86_datacall(intnum, vmf, vmc)
}
vmf->vmf_trapno = intnum;
mtx_lock(&vm86pcb_lock);
retval = vm86_bioscall(vmf);
mtx_unlock(&vm86pcb_lock);
for (i = 0; i < vmc->npages; i++) {
entry = vmc->pmap[i].pte_num;
pte[entry] = vmc->pmap[i].old_pte;
}
mtx_unlock(&vm86pcb_lock);
return (retval);
}