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-rw-r--r--arch/powerpc/include/asm/hvcall.h6
-rw-r--r--arch/powerpc/kvm/book3s_hv.c52
2 files changed, 57 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/hvcall.h b/arch/powerpc/include/asm/hvcall.h
index 5dbbb29f5c3e..85bc8c0d257b 100644
--- a/arch/powerpc/include/asm/hvcall.h
+++ b/arch/powerpc/include/asm/hvcall.h
@@ -279,6 +279,12 @@
#define H_GET_24X7_DATA 0xF07C
#define H_GET_PERF_COUNTER_INFO 0xF080
+/* Values for 2nd argument to H_SET_MODE */
+#define H_SET_MODE_RESOURCE_SET_CIABR 1
+#define H_SET_MODE_RESOURCE_SET_DAWR 2
+#define H_SET_MODE_RESOURCE_ADDR_TRANS_MODE 3
+#define H_SET_MODE_RESOURCE_LE 4
+
#ifndef __ASSEMBLY__
/**
diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c
index c4377c70787a..7db9df2ac211 100644
--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -557,6 +557,48 @@ static void kvmppc_create_dtl_entry(struct kvm_vcpu *vcpu,
vcpu->arch.dtl.dirty = true;
}
+static bool kvmppc_power8_compatible(struct kvm_vcpu *vcpu)
+{
+ if (vcpu->arch.vcore->arch_compat >= PVR_ARCH_207)
+ return true;
+ if ((!vcpu->arch.vcore->arch_compat) &&
+ cpu_has_feature(CPU_FTR_ARCH_207S))
+ return true;
+ return false;
+}
+
+static int kvmppc_h_set_mode(struct kvm_vcpu *vcpu, unsigned long mflags,
+ unsigned long resource, unsigned long value1,
+ unsigned long value2)
+{
+ switch (resource) {
+ case H_SET_MODE_RESOURCE_SET_CIABR:
+ if (!kvmppc_power8_compatible(vcpu))
+ return H_P2;
+ if (value2)
+ return H_P4;
+ if (mflags)
+ return H_UNSUPPORTED_FLAG_START;
+ /* Guests can't breakpoint the hypervisor */
+ if ((value1 & CIABR_PRIV) == CIABR_PRIV_HYPER)
+ return H_P3;
+ vcpu->arch.ciabr = value1;
+ return H_SUCCESS;
+ case H_SET_MODE_RESOURCE_SET_DAWR:
+ if (!kvmppc_power8_compatible(vcpu))
+ return H_P2;
+ if (mflags)
+ return H_UNSUPPORTED_FLAG_START;
+ if (value2 & DABRX_HYP)
+ return H_P4;
+ vcpu->arch.dawr = value1;
+ vcpu->arch.dawrx = value2;
+ return H_SUCCESS;
+ default:
+ return H_TOO_HARD;
+ }
+}
+
int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
{
unsigned long req = kvmppc_get_gpr(vcpu, 3);
@@ -626,7 +668,14 @@ int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu)
/* Send the error out to userspace via KVM_RUN */
return rc;
-
+ case H_SET_MODE:
+ ret = kvmppc_h_set_mode(vcpu, kvmppc_get_gpr(vcpu, 4),
+ kvmppc_get_gpr(vcpu, 5),
+ kvmppc_get_gpr(vcpu, 6),
+ kvmppc_get_gpr(vcpu, 7));
+ if (ret == H_TOO_HARD)
+ return RESUME_HOST;
+ break;
case H_XIRR:
case H_CPPR:
case H_EOI:
@@ -652,6 +701,7 @@ static int kvmppc_hcall_impl_hv(unsigned long cmd)
case H_PROD:
case H_CONFER:
case H_REGISTER_VPA:
+ case H_SET_MODE:
#ifdef CONFIG_KVM_XICS
case H_XIRR:
case H_CPPR: