KVM: PPC: bookehv: Add EPCR support in mtspr/mfspr emulation
Add EPCR support in booke mtspr/mfspr emulation. EPCR register is defined only
for 64-bit and HV categories, we will expose it at this point only to 64-bit
virtual processors running on 64-bit HV hosts.
Define a reusable setter function for vcpu's EPCR.
Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
[agraf: move HV dependency in the code]
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/powerpc/kvm/booke_emulate.c b/arch/powerpc/kvm/booke_emulate.c
index 514790f..4685b8c 100644
--- a/arch/powerpc/kvm/booke_emulate.c
+++ b/arch/powerpc/kvm/booke_emulate.c
@@ -240,7 +240,14 @@
case SPRN_MCSR:
vcpu->arch.mcsr &= ~spr_val;
break;
-
+#if defined(CONFIG_64BIT)
+ case SPRN_EPCR:
+ kvmppc_set_epcr(vcpu, spr_val);
+#ifdef CONFIG_KVM_BOOKE_HV
+ mtspr(SPRN_EPCR, vcpu->arch.shadow_epcr);
+#endif
+ break;
+#endif
default:
emulated = EMULATE_FAIL;
}
@@ -335,6 +342,11 @@
case SPRN_MCSR:
*spr_val = vcpu->arch.mcsr;
break;
+#if defined(CONFIG_64BIT)
+ case SPRN_EPCR:
+ *spr_val = vcpu->arch.epcr;
+ break;
+#endif
default:
emulated = EMULATE_FAIL;