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Avoid redundant TLB flushes (Daniel Jacobowitz).

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2211 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2006-11-12 20:55:05 +00:00
parent b362e5e067
commit 483dcf538e
1 changed files with 9 additions and 0 deletions
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9
target-mips/op_helper.c
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@ -572,8 +572,17 @@ static void invalidate_tlb (int idx)
{ {
tlb_t *tlb; tlb_t *tlb;
target_ulong addr; target_ulong addr;
uint8_t ASID;
ASID = env->CP0_EntryHi & 0xFF;
tlb = &env->tlb[idx]; tlb = &env->tlb[idx];
/* The qemu TLB is flushed then the ASID changes, so no need to
flush these entries again. */
if (tlb->G == 0 && tlb->ASID != ASID) {
return;
}
if (tlb->V0) { if (tlb->V0) {
tb_invalidate_page_range(tlb->PFN[0], tlb->end - tlb->VPN); tb_invalidate_page_range(tlb->PFN[0], tlb->end - tlb->VPN);
addr = tlb->VPN; addr = tlb->VPN;