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KVM: PPC: BOOK3S: Always use the saved DAR value

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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>
This commit is contained in:
Aneesh Kumar K.V 2014-05-12 17:04:05 +05:30 committed by Alexander Graf
parent 5c165aeca3
commit 7310f3a5b0
1 changed files with 7 additions and 0 deletions
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7
arch/powerpc/kvm/book3s_emulate.c
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@ -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
}