KVM: PPC: Add sanity checking to vcpu_run
There are multiple features in PowerPC KVM that can now be enabled
depending on the user's wishes. Some of the combinations don't make
sense or don't work though.
So this patch adds a way to check if the executing environment would
actually be able to run the guest properly. It also adds sanity
checks if PVR is set (should always be true given the current code
flow), if PAPR is only used with book3s_64 where it works and that
HV KVM is only used in PAPR mode.
Signed-off-by: Alexander Graf <agraf@suse.de>
diff --git a/arch/powerpc/include/asm/kvm.h b/arch/powerpc/include/asm/kvm.h
index a6a253e..08fe69e 100644
--- a/arch/powerpc/include/asm/kvm.h
+++ b/arch/powerpc/include/asm/kvm.h
@@ -284,6 +284,11 @@
#define KVM_INTERRUPT_UNSET -2U
#define KVM_INTERRUPT_SET_LEVEL -3U
+#define KVM_CPU_440 1
+#define KVM_CPU_E500V2 2
+#define KVM_CPU_3S_32 3
+#define KVM_CPU_3S_64 4
+
/* for KVM_CAP_SPAPR_TCE */
struct kvm_create_spapr_tce {
__u64 liobn;
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index e681302..2b8284f 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -390,6 +390,8 @@
u8 osi_needed;
u8 osi_enabled;
u8 papr_enabled;
+ u8 sane;
+ u8 cpu_type;
u8 hcall_needed;
u32 cpr0_cfgaddr; /* holds the last set cpr0_cfgaddr */
diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index d121f49..46efd1a 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -66,6 +66,7 @@
extern int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu);
extern void kvmppc_emulate_dec(struct kvm_vcpu *vcpu);
extern u32 kvmppc_get_dec(struct kvm_vcpu *vcpu, u64 tb);
+extern int kvmppc_sanity_check(struct kvm_vcpu *vcpu);
/* Core-specific hooks */