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| author |   Alexander Graf <agraf@suse.de> | 2013-01-18 02:27:14 +0100 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2013-01-24 19:23:30 +0100 |
| commit | 523f0e5421c12610527c620b983b443f329e3a32 (patch) | |
| tree | 097041c9863c7d08aff4aacfddf0e6e2ab3d80a3 /arch/powerpc/kvm/e500_tlb.c | |
| parent | KVM: PPC: E500: Move write_stlbe higher (diff) | |
| download | linux-dev-523f0e5421c12610527c620b983b443f329e3a32.tar.xz linux-dev-523f0e5421c12610527c620b983b443f329e3a32.zip | |
KVM: PPC: E500: Explicitly mark shadow maps invalid
When we invalidate shadow TLB maps on the host, we don't mark them
as not valid. But we should.
Fix this by removing the E500_TLB_VALID from their flags when
invalidating.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm/e500_tlb.c')
| -rw-r--r-- | arch/powerpc/kvm/e500_tlb.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index d38ad63fdcb9..8efb2acee2bf 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -204,9 +204,13 @@ static void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500, { struct kvm_book3e_206_tlb_entry *gtlbe = get_entry(vcpu_e500, tlbsel, esel); + struct tlbe_ref *ref = &vcpu_e500->gtlb_priv[tlbsel][esel].ref; - if (tlbsel == 1 && - vcpu_e500->gtlb_priv[1][esel].ref.flags & E500_TLB_BITMAP) { + /* Don't bother with unmapped entries */ + if (!(ref->flags & E500_TLB_VALID)) + return; + + if (tlbsel == 1 && ref->flags & E500_TLB_BITMAP) { u64 tmp = vcpu_e500->g2h_tlb1_map[esel]; int hw_tlb_indx; unsigned long flags; @@ -224,7 +228,7 @@ static void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500, } mb(); vcpu_e500->g2h_tlb1_map[esel] = 0; - vcpu_e500->gtlb_priv[1][esel].ref.flags &= ~E500_TLB_BITMAP; + ref->flags &= ~(E500_TLB_BITMAP | E500_TLB_VALID); local_irq_restore(flags); return; @@ -232,6 +236,9 @@ static void inval_gtlbe_on_host(struct kvmppc_vcpu_e500 *vcpu_e500, /* Guest tlbe is backed by at most one host tlbe per shadow pid. */ kvmppc_e500_tlbil_one(vcpu_e500, gtlbe); + + /* Mark the TLB as not backed by the host anymore */ + ref->flags &= ~E500_TLB_VALID; } static int tlb0_set_base(gva_t addr, int sets, int ways) |