gwj / at91sam9263 · Commits

Commit 09c56b842ee3a1e5efbf98540408cdcafe451ab0

Authored by pbrook
1 parent ecd78a0a

Avoid flushing of global TLB entries for differing ASIDs (Thiemo Seufer). 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1778 c046a42c-6fe2-441c-8c8c-71466251a162
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Showing 1 changed file with 3 additions and 2 deletions
target-mips/op_helper.c
  View file @09c56b8
... ... @@ -625,13 +625,14 @@ void do_tlbp (void)
625 625 void do_tlbr (void)
626 626 {
627 627 tlb_t *tlb;
  628 + uint8_t ASID;
628 629 int size;
629 630  
  631 + ASID = env->CP0_EntryHi & 0xFF;
630 632 tlb = &env->tlb[env->CP0_index & (MIPS_TLB_NB - 1)];
631 633  
632 634 /* If this will change the current ASID, flush qemu's TLB. */
633   - /* FIXME: Could avoid flushing things which match global entries... */
634   - if ((env->CP0_EntryHi & 0xFF) != tlb->ASID)
  635 + if (ASID != tlb->ASID && tlb->G != 1)
635 636 tlb_flush (env, 1);
636 637  
637 638 env->CP0_EntryHi = tlb->VPN | tlb->ASID;
... ...