[PATCH 1/6 v2] kvm: ppc: bookehv: Added wrapper macros for shadow registers

Bharat Bhushan
2014-07-17T11:31:35Z

There are shadow registers like, GSPRG[0-3], GSRR0, GSRR1 etc on
BOOKE-HV and these shadow registers are guest accessible.
So these shadow registers needs to be updated on BOOKE-HV.
This patch adds new macro for get/set helper of shadow register .

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@freescale.com>
---
v1->v2
- Fix compilation for book3s (separate macro etc)

arch/powerpc/include/asm/kvm_ppc.h | 44 +++++++++++++++++++++++++++++++-------
1 file changed, 36 insertions(+), 8 deletions(-)

diff --git a/arch/powerpc/include/asm/kvm_ppc.h b/arch/powerpc/include/asm/kvm_ppc.h
index f3f7611..7646994 100644
--- a/arch/powerpc/include/asm/kvm_ppc.h
+++ b/arch/powerpc/include/asm/kvm_ppc.h
@@ -475,8 +475,20 @@ static inline bool kvmppc_shared_big_endian(struct kvm_vcpu *vcpu)
#endif
}

+#define SPRNG_WRAPPER_GET(reg, e500hv_spr) \
+static inline ulong kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
+{ \
+ return mfspr(e500hv_spr); \
+} \
+
+#define SPRNG_WRAPPER_SET(reg, e500hv_spr) \
+static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, ulong val) \
+{ \
+ mtspr(e500hv_spr, val); \
+} \
+
#define SHARED_WRAPPER_GET(reg, size) \
-static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
+static inline u##size kvmppc_get_##reg(struct kvm_vcpu *vcpu) \
{ \
if (kvmppc_shared_big_endian(vcpu)) \
return be##size##_to_cpu(vcpu->arch.shared->reg); \
@@ -497,14 +509,30 @@ static inline void kvmppc_set_##reg(struct kvm_vcpu *vcpu, u##size val) \
SHARED_WRAPPER_GET(reg, size) \
SHARED_WRAPPER_SET(reg, size) \

+#define SPRNG_WRAPPER(reg, e500hv_spr) \
+ SPRNG_WRAPPER_GET(reg, e500hv_spr) \
+ SPRNG_WRAPPER_SET(reg, e500hv_spr) \
+
+#ifdef CONFIG_KVM_BOOKE_HV
+
+#define SHARED_SPRNG_WRAPPER(reg, size, e500hv_spr) \
+ SPRNG_WRAPPER(reg, e500hv_spr) \
+
+#else
+
+#define SHARED_SPRNG_WRAPPER(reg, size, e500hv_spr) \
+ SHARED_WRAPPER(reg, size) \
+
+#endif
+
SHARED_WRAPPER(critical, 64)
-SHARED_WRAPPER(sprg0, 64)
-SHARED_WRAPPER(sprg1, 64)
-SHARED_WRAPPER(sprg2, 64)
-SHARED_WRAPPER(sprg3, 64)
-SHARED_WRAPPER(srr0, 64)
-SHARED_WRAPPER(srr1, 64)
-SHARED_WRAPPER(dar, 64)
+SHARED_SPRNG_WRAPPER(sprg0, 64, SPRN_GSPRG0)
+SHARED_SPRNG_WRAPPER(sprg1, 64, SPRN_GSPRG1)
+SHARED_SPRNG_WRAPPER(sprg2, 64, SPRN_GSPRG2)
+SHARED_SPRNG_WRAPPER(sprg3, 64, SPRN_GSPRG3)
+SHARED_SPRNG_WRAPPER(srr0, 64, SPRN_GSRR0)
+SHARED_SPRNG_WRAPPER(srr1, 64, SPRN_GSRR1)
+SHARED_SPRNG_WRAPPER(dar, 64, SPRN_GDEAR)
SHARED_WRAPPER_GET(msr, 64)
static inline void kvmppc_set_msr_fast(struct kvm_vcpu *vcpu, u64 val)
{
--
1.9.3