Commit 483dcf53 authored by Paul Brook's avatar Paul Brook
Browse files

Avoid redundant TLB flushes (Daniel Jacobowitz). 


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2211 c046a42c-6fe2-441c-8c8c-71466251a162
parent b362e5e0

target-mips/op_helper.c

+9 −0
Original line number Diff line number Diff line
@@ -572,8 +572,17 @@ static void invalidate_tlb (int idx) 
{

    tlb_t *tlb;

    target_ulong addr;

    uint8_t ASID;



    ASID = env->CP0_EntryHi & 0xFF;



    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) {

        tb_invalidate_page_range(tlb->PFN[0], tlb->end - tlb->VPN);

        addr = tlb->VPN;