KVM: selftests: Move Hyper-V specific functions out of processor.c

Since there is 'hyperv.c' for Hyper-V specific functions already, move
Hyper-V specific functions out of processor.c there.

No functional change intended.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20240816130139.286246-2-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

tools/testing/selftests/kvm/include/x86_64/hyperv.h

@@ -343,4 +343,8 @@ struct hyperv_test_pages *vcpu_alloc_hyperv_test_pages(struct kvm_vm *vm,
 /* HV_X64_MSR_TSC_INVARIANT_CONTROL bits */
 #define HV_INVARIANT_TSC_EXPOSED               BIT_ULL(0)
 
+const struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(void);
+const struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vcpu *vcpu);
+void vcpu_set_hv_cpuid(struct kvm_vcpu *vcpu);
+
 #endif /* !SELFTEST_KVM_HYPERV_H */

tools/testing/selftests/kvm/include/x86_64/processor.h

@@ -25,6 +25,10 @@ extern bool host_cpu_is_intel;
 extern bool host_cpu_is_amd;
 extern uint64_t guest_tsc_khz;
 
+#ifndef MAX_NR_CPUID_ENTRIES
+#define MAX_NR_CPUID_ENTRIES 100
+#endif
+
 /* Forced emulation prefix, used to invoke the emulator unconditionally. */
 #define KVM_FEP "ud2; .byte 'k', 'v', 'm';"
 
@@ -908,8 +912,6 @@ static inline void vcpu_xcrs_set(struct kvm_vcpu *vcpu, struct kvm_xcrs *xcrs)
 const struct kvm_cpuid_entry2 *get_cpuid_entry(const struct kvm_cpuid2 *cpuid,
 					       uint32_t function, uint32_t index);
 const struct kvm_cpuid2 *kvm_get_supported_cpuid(void);
-const struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(void);
-const struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vcpu *vcpu);
 
 static inline uint32_t kvm_cpu_fms(void)
 {
@@ -1009,7 +1011,6 @@ static inline struct kvm_cpuid2 *allocate_kvm_cpuid2(int nr_entries)
 }
 
 void vcpu_init_cpuid(struct kvm_vcpu *vcpu, const struct kvm_cpuid2 *cpuid);
-void vcpu_set_hv_cpuid(struct kvm_vcpu *vcpu);
 
 static inline struct kvm_cpuid_entry2 *__vcpu_get_cpuid_entry(struct kvm_vcpu *vcpu,
 							      uint32_t function,

tools/testing/selftests/kvm/lib/x86_64/hyperv.c

@@ -8,6 +8,65 @@
 #include "processor.h"
 #include "hyperv.h"
 
+const struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(void)
+{
+	static struct kvm_cpuid2 *cpuid;
+	int kvm_fd;
+
+	if (cpuid)
+		return cpuid;
+
+	cpuid = allocate_kvm_cpuid2(MAX_NR_CPUID_ENTRIES);
+	kvm_fd = open_kvm_dev_path_or_exit();
+
+	kvm_ioctl(kvm_fd, KVM_GET_SUPPORTED_HV_CPUID, cpuid);
+
+	close(kvm_fd);
+	return cpuid;
+}
+
+void vcpu_set_hv_cpuid(struct kvm_vcpu *vcpu)
+{
+	static struct kvm_cpuid2 *cpuid_full;
+	const struct kvm_cpuid2 *cpuid_sys, *cpuid_hv;
+	int i, nent = 0;
+
+	if (!cpuid_full) {
+		cpuid_sys = kvm_get_supported_cpuid();
+		cpuid_hv = kvm_get_supported_hv_cpuid();
+
+		cpuid_full = allocate_kvm_cpuid2(cpuid_sys->nent + cpuid_hv->nent);
+		if (!cpuid_full) {
+			perror("malloc");
+			abort();
+		}
+
+		/* Need to skip KVM CPUID leaves 0x400000xx */
+		for (i = 0; i < cpuid_sys->nent; i++) {
+			if (cpuid_sys->entries[i].function >= 0x40000000 &&
+			    cpuid_sys->entries[i].function < 0x40000100)
+				continue;
+			cpuid_full->entries[nent] = cpuid_sys->entries[i];
+			nent++;
+		}
+
+		memcpy(&cpuid_full->entries[nent], cpuid_hv->entries,
+		       cpuid_hv->nent * sizeof(struct kvm_cpuid_entry2));
+		cpuid_full->nent = nent + cpuid_hv->nent;
+	}
+
+	vcpu_init_cpuid(vcpu, cpuid_full);
+}
+
+const struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vcpu *vcpu)
+{
+	struct kvm_cpuid2 *cpuid = allocate_kvm_cpuid2(MAX_NR_CPUID_ENTRIES);
+
+	vcpu_ioctl(vcpu, KVM_GET_SUPPORTED_HV_CPUID, cpuid);
+
+	return cpuid;
+}
+
 struct hyperv_test_pages *vcpu_alloc_hyperv_test_pages(struct kvm_vm *vm,
 						       vm_vaddr_t *p_hv_pages_gva)
 {

tools/testing/selftests/kvm/lib/x86_64/processor.c

@@ -19,8 +19,6 @@
 #define KERNEL_DS	0x10
 #define KERNEL_TSS	0x18
 
-#define MAX_NR_CPUID_ENTRIES 100
-
 vm_vaddr_t exception_handlers;
 bool host_cpu_is_amd;
 bool host_cpu_is_intel;
@@ -1195,65 +1193,6 @@ void xen_hypercall(uint64_t nr, uint64_t a0, void *a1)
 	GUEST_ASSERT(!__xen_hypercall(nr, a0, a1));
 }
 
-const struct kvm_cpuid2 *kvm_get_supported_hv_cpuid(void)
-{
-	static struct kvm_cpuid2 *cpuid;
-	int kvm_fd;
-
-	if (cpuid)
-		return cpuid;
-
-	cpuid = allocate_kvm_cpuid2(MAX_NR_CPUID_ENTRIES);
-	kvm_fd = open_kvm_dev_path_or_exit();
-
-	kvm_ioctl(kvm_fd, KVM_GET_SUPPORTED_HV_CPUID, cpuid);
-
-	close(kvm_fd);
-	return cpuid;
-}
-
-void vcpu_set_hv_cpuid(struct kvm_vcpu *vcpu)
-{
-	static struct kvm_cpuid2 *cpuid_full;
-	const struct kvm_cpuid2 *cpuid_sys, *cpuid_hv;
-	int i, nent = 0;
-
-	if (!cpuid_full) {
-		cpuid_sys = kvm_get_supported_cpuid();
-		cpuid_hv = kvm_get_supported_hv_cpuid();
-
-		cpuid_full = allocate_kvm_cpuid2(cpuid_sys->nent + cpuid_hv->nent);
-		if (!cpuid_full) {
-			perror("malloc");
-			abort();
-		}
-
-		/* Need to skip KVM CPUID leaves 0x400000xx */
-		for (i = 0; i < cpuid_sys->nent; i++) {
-			if (cpuid_sys->entries[i].function >= 0x40000000 &&
-			    cpuid_sys->entries[i].function < 0x40000100)
-				continue;
-			cpuid_full->entries[nent] = cpuid_sys->entries[i];
-			nent++;
-		}
-
-		memcpy(&cpuid_full->entries[nent], cpuid_hv->entries,
-		       cpuid_hv->nent * sizeof(struct kvm_cpuid_entry2));
-		cpuid_full->nent = nent + cpuid_hv->nent;
-	}
-
-	vcpu_init_cpuid(vcpu, cpuid_full);
-}
-
-const struct kvm_cpuid2 *vcpu_get_supported_hv_cpuid(struct kvm_vcpu *vcpu)
-{
-	struct kvm_cpuid2 *cpuid = allocate_kvm_cpuid2(MAX_NR_CPUID_ENTRIES);
-
-	vcpu_ioctl(vcpu, KVM_GET_SUPPORTED_HV_CPUID, cpuid);
-
-	return cpuid;
-}
-
 unsigned long vm_compute_max_gfn(struct kvm_vm *vm)
 {
 	const unsigned long num_ht_pages = 12 << (30 - vm->page_shift); /* 12 GiB */

tools/testing/selftests/kvm/x86_64/xen_vmcall_test.c

@@ -10,6 +10,7 @@
 #include "test_util.h"
 #include "kvm_util.h"
 #include "processor.h"
+#include "hyperv.h"
 
 #define HCALL_REGION_GPA	0xc0000000ULL
 #define HCALL_REGION_SLOT	10