From: "Aneesh Kumar K.V" <[email protected]> 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 <[email protected]> --- arch/powerpc/kvm/book3s_emulate.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/arch/powerpc/kvm/book3s_emulate.c b/arch/powerpc/kvm/book3s_emulate.c index 502a47ac4453..d8e2d079483d 100644 --- a/arch/powerpc/kvm/book3s_emulate.c +++ b/arch/powerpc/kvm/book3s_emulate.c @@ -599,6 +599,19 @@ unprivileged: u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst) { +#ifdef CONFIG_PPC_BOOK3S_64 + return vcpu->arch.fault_dsisr; +#else + /* + * Mac OS X has some applications - namely the Finder - that require + * alignment interrupts to work properly. So we need to implement them. + + * But the spec for 970 and 750 also looks different. While 750 requires + * the DSISR and DAR fields to reflect some instruction bits (DSISR) and + * the fault address (DAR), the 970 declares this as an optional feature. + * So we need to reconstruct DSISR and DAR manually. + */ + u32 dsisr = 0; /* @@ -637,10 +650,24 @@ u32 kvmppc_alignment_dsisr(struct kvm_vcpu *vcpu, unsigned int inst) dsisr |= (inst >> 16) & 0x03ff; /* bits 22:31 */ return dsisr; +#endif } ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst) { +#ifdef CONFIG_PPC_BOOK3S_64 + return vcpu->arch.fault_dar; +#else + /* + * Mac OS X has some applications - namely the Finder - that require + * alignment interrupts to work properly. So we need to implement them. + + * But the spec for 970 and 750 also looks different. While 750 requires + * the DSISR and DAR fields to reflect some instruction bits (DSISR) and + * the fault address (DAR), the 970 declares this as an optional feature. + * So we need to reconstruct DSISR and DAR manually. + */ + ulong dar = 0; ulong ra = get_ra(inst); ulong rb = get_rb(inst); @@ -665,4 +692,5 @@ ulong kvmppc_alignment_dar(struct kvm_vcpu *vcpu, unsigned int inst) } return dar; +#endif } -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
