linux-kernel - [PATCH 5/6] KVM: selftests: Move hypercall() to hyper.h

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Date:   Fri,  4 Nov 2022 21:57:03 -0700
From:   Vipin Sharma <vipinsh@...gle.com>
To:     seanjc@...gle.com, pbonzini@...hat.com, vkuznets@...hat.com
Cc:     dmatlack@...gle.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Vipin Sharma <vipinsh@...gle.com>
Subject: [PATCH 5/6] KVM: selftests: Move hypercall() to hyper.h

hypercall() can be used by other hyperv tests, move it to hyperv.h.

Signed-off-by: Vipin Sharma <vipinsh@...gle.com>
---
 .../selftests/kvm/include/x86_64/hyperv.h       | 17 +++++++++++++++++
 .../selftests/kvm/x86_64/hyperv_features.c      | 17 -----------------
 2 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86_64/hyperv.h b/tools/testing/selftests/kvm/include/x86_64/hyperv.h
index 9d8c325af1d9..87d8d9e444f7 100644
--- a/tools/testing/selftests/kvm/include/x86_64/hyperv.h
+++ b/tools/testing/selftests/kvm/include/x86_64/hyperv.h
@@ -199,4 +199,21 @@ static inline uint64_t hv_linux_guest_id(void)
 	       ((uint64_t)LINUX_VERSION_CODE << 16);
 }
 
+static inline uint8_t hypercall(u64 control, vm_vaddr_t input_address,
+				vm_vaddr_t output_address, uint64_t *hv_status)
+{
+	uint8_t vector;
+
+	/* Note both the hypercall and the "asm safe" clobber r9-r11. */
+	asm volatile("mov %[output_address], %%r8\n\t"
+		     KVM_ASM_SAFE("vmcall")
+		     : "=a" (*hv_status),
+		       "+c" (control), "+d" (input_address),
+		       KVM_ASM_SAFE_OUTPUTS(vector)
+		     : [output_address] "r"(output_address),
+		       "a" (-EFAULT)
+		     : "cc", "memory", "r8", KVM_ASM_SAFE_CLOBBERS);
+	return vector;
+}
+
 #endif /* !SELFTEST_KVM_HYPERV_H */
diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_features.c b/tools/testing/selftests/kvm/x86_64/hyperv_features.c
index b5a42cf1ad9d..31b22ee07dfb 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_features.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_features.c
@@ -13,23 +13,6 @@
 #include "processor.h"
 #include "hyperv.h"
 
-static inline uint8_t hypercall(u64 control, vm_vaddr_t input_address,
-				vm_vaddr_t output_address, uint64_t *hv_status)
-{
-	uint8_t vector;
-
-	/* Note both the hypercall and the "asm safe" clobber r9-r11. */
-	asm volatile("mov %[output_address], %%r8\n\t"
-		     KVM_ASM_SAFE("vmcall")
-		     : "=a" (*hv_status),
-		       "+c" (control), "+d" (input_address),
-		       KVM_ASM_SAFE_OUTPUTS(vector)
-		     : [output_address] "r"(output_address),
-		       "a" (-EFAULT)
-		     : "cc", "memory", "r8", KVM_ASM_SAFE_CLOBBERS);
-	return vector;
-}
-
 struct msr_data {
 	uint32_t idx;
 	bool available;
-- 
2.38.1.273.g43a17bfeac-goog