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KVM: PPC: Book3S PR: Handle Facility interrupt and FSCR

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POWER8 introduced a new interrupt type called "Facility unavailable interrupt"
which contains its status message in a new register called FSCR.

Handle these exits and try to emulate instructions for unhandled facilities.
Follow-on patches enable KVM to expose specific facilities into the guest.

Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Alexander Graf
2014-04-29 16:48:44 +02:00
parent a5948fa092
commit 616dff8602
9 changed files with 125 additions and 14 deletions
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6
arch/powerpc/kvm/book3s_emulate.c
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@@ -438,6 +438,9 @@ int kvmppc_core_emulate_mtspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong spr_val)
case SPRN_GQR7:
to_book3s(vcpu)->gqr[sprn - SPRN_GQR0] = spr_val;
break;
case SPRN_FSCR:
vcpu->arch.fscr = spr_val;
break;
case SPRN_ICTC:
case SPRN_THRM1:
case SPRN_THRM2:
@@ -545,6 +548,9 @@ int kvmppc_core_emulate_mfspr_pr(struct kvm_vcpu *vcpu, int sprn, ulong *spr_val
case SPRN_GQR7:
*spr_val = to_book3s(vcpu)->gqr[sprn - SPRN_GQR0];
break;
case SPRN_FSCR:
*spr_val = vcpu->arch.fscr;
break;
case SPRN_THRM1:
case SPRN_THRM2:
case SPRN_THRM3: