[XEN PATCH v1 1/7] x86/vpmu: separate amd/intel vPMU code

[Sergiy Kibrik <Sergiy_Kibrik@xxxxxxxx>]

Build AMD vPMU when CONFIG_AMD is on, and Intel vPMU when CONFIG_INTEL
is on respectively, allowing for a plaftorm-specific build. Also separate
arch_vpmu_ops initializers using these options and static inline stubs.

No functional change intended.

Signed-off-by: Sergiy Kibrik <Sergiy_Kibrik@xxxxxxxx>
CC: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
CC: Jan Beulich <jbeulich@xxxxxxxx>

---
changes in v1:
 - switch to CONFIG_{AMD,INTEL} instead of CONFIG_{SVM,VMX}


 xen/arch/x86/cpu/Makefile       |  4 +++-
 xen/arch/x86/include/asm/vpmu.h | 19 +++++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/xen/arch/x86/cpu/Makefile b/xen/arch/x86/cpu/Makefile
index 35561fe51d..eafce5f204 100644
--- a/xen/arch/x86/cpu/Makefile
+++ b/xen/arch/x86/cpu/Makefile
@@ -10,4 +10,6 @@ obj-y += intel.o
 obj-y += intel_cacheinfo.o
 obj-y += mwait-idle.o
 obj-y += shanghai.o
-obj-y += vpmu.o vpmu_amd.o vpmu_intel.o
+obj-y += vpmu.o
+obj-$(CONFIG_AMD) += vpmu_amd.o
+obj-$(CONFIG_INTEL) += vpmu_intel.o
diff --git a/xen/arch/x86/include/asm/vpmu.h b/xen/arch/x86/include/asm/vpmu.h
index dae9b43dac..e7a8f211f8 100644
--- a/xen/arch/x86/include/asm/vpmu.h
+++ b/xen/arch/x86/include/asm/vpmu.h
@@ -11,6 +11,7 @@
 #define __ASM_X86_HVM_VPMU_H_
 
 #include <public/pmu.h>
+#include <xen/err.h>
 
 #define vcpu_vpmu(vcpu)   (&(vcpu)->arch.vpmu)
 #define vpmu_vcpu(vpmu)   container_of((vpmu), struct vcpu, arch.vpmu)
@@ -42,9 +43,27 @@ struct arch_vpmu_ops {
 #endif
 };
 
+#ifdef CONFIG_INTEL
 const struct arch_vpmu_ops *core2_vpmu_init(void);
+#else
+static inline const struct arch_vpmu_ops *core2_vpmu_init(void)
+{
+    return ERR_PTR(-ENODEV);
+}
+#endif
+#ifdef CONFIG_AMD
 const struct arch_vpmu_ops *amd_vpmu_init(void);
 const struct arch_vpmu_ops *hygon_vpmu_init(void);
+#else
+static inline const struct arch_vpmu_ops *amd_vpmu_init(void)
+{
+    return ERR_PTR(-ENODEV);
+}
+static inline const struct arch_vpmu_ops *hygon_vpmu_init(void)
+{
+    return ERR_PTR(-ENODEV);
+}
+#endif
 
 struct vpmu_struct {
     u32 flags;
-- 
2.25.1