On 04.01.2013, at 20:50, Scott Wood wrote: > On 01/04/2013 11:36:38 AM, Alexander Graf wrote: >> The EPR register is potentially valid for PR KVM as well, so we need >> to emulate accesses to it. It's only defined for reading, so only >> handle the mfspr case. >> Signed-off-by: Alexander Graf <ag...@suse.de> >> --- >> arch/powerpc/kvm/booke_emulate.c | 3 +++ >> 1 files changed, 3 insertions(+), 0 deletions(-) >> diff --git a/arch/powerpc/kvm/booke_emulate.c >> b/arch/powerpc/kvm/booke_emulate.c >> index 4685b8c..27a4b28 100644 >> --- a/arch/powerpc/kvm/booke_emulate.c >> +++ b/arch/powerpc/kvm/booke_emulate.c >> @@ -269,6 +269,9 @@ int kvmppc_booke_emulate_mfspr(struct kvm_vcpu *vcpu, >> int sprn, ulong *spr_val) >> case SPRN_ESR: >> *spr_val = vcpu->arch.shared->esr; >> break; >> + case SPRN_EPR: >> + *spr_val = vcpu->arch.epr; >> + break; > > It's not just potentially valid -- in our internal tree we do paravirt EPR on > e500v2 even though the hardware doesn't implement it.
I want to later add a flag to the QEMU e500 pv machine indicating that we support EPR. Once we get that, any e500 target cpu can use EPR. Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
