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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2014-05-12 17:04:05 +0530
committerAlexander Graf <agraf@suse.de>2014-05-30 14:26:25 +0200
commit7310f3a5b0ecc7ac8b57e70fe395968cbe0fc40a (patch)
treee87d1b81fc662d4fe8f69afb6c2f90655813f94d /arch/powerpc
parent5c165aeca3e357fbc9760e5f66b6de8ef994e3c7 (diff)
KVM: PPC: BOOK3S: Always use the saved DAR value
Although it's optional, IBM POWER cpus always had DAR value set on alignment interrupt. So don't try to compute these values. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/kvm/book3s_emulate.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c
index 9bdff159ad2a..61f38eb470b3 100644
--- a/arch/powerpc/kvm/book3s_emulate.c
+++ b/arch/powerpc/kvm/book3s_emulate.c
@@ -676,6 +676,12 @@ u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst)
ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst)
{
+#ifdef CONFIG_PPC_BOOK3S_64
+ /*
+ * Linux's fix_alignment() assumes that DAR is valid, so can we
+ */
+ return vcpu->arch.fault_dar;
+#else
ulong dar = 0;
ulong ra = get_ra(inst);
ulong rb = get_rb(inst);
@@ -700,4 +706,5 @@ ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst)
}
return dar;
+#endif
}