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authorAlexander Graf <agraf@suse.de>2010-08-02 20:11:39 +0200
committerAvi Kivity <avi@redhat.com>2010-10-24 10:52:06 +0200
commit2e602847d9c2d6b487bda62bbbe550db40ca912f (patch)
treee93c763d86987b7aa10f87f6582eacbdee9fa792 /arch/powerpc/kvm
parent4cb6b7ea0cd085e6613153ad69608cad6421abcc (diff)
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KVM: PPC: Don't flush PTEs on NX/RO hit
When hitting a no-execute or read-only data/inst storage interrupt we were flushing the respective PTE so we're sure it gets properly overwritten next. According to the spec, this is unnecessary though. The guest issues a tlbie anyways, so we're safe to just keep the PTE around and have it manually removed from the guest, saving us a flush. Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm')
-rw-r--r--arch/powerpc/kvm/book3s.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 54ca578..2fb528f 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -887,7 +887,6 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->arch.shared->msr |=
to_svcpu(vcpu)->shadow_srr1 & 0x58000000;
kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
- kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL);
r = RESUME_GUEST;
}
break;
@@ -913,7 +912,6 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->arch.shared->dar = dar;
vcpu->arch.shared->dsisr = to_svcpu(vcpu)->fault_dsisr;
kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
- kvmppc_mmu_pte_flush(vcpu, dar, ~0xFFFUL);
r = RESUME_GUEST;
}
break;