On 3/5/2025 11:59 PM, Pratik R. Sampat wrote:
Abstract rep vmmcall coded into the vmgexit helper for the sev
library.
No functional change intended.
Signed-off-by: Pratik R. Sampat <prsam...@amd.com>
Reviewed-by: Pankaj Gupta <pankaj.gu...@amd.com>
---
tools/testing/selftests/kvm/include/x86/sev.h | 5 +++++
tools/testing/selftests/kvm/x86/sev_smoke_test.c | 2 +-
2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/kvm/include/x86/sev.h
b/tools/testing/selftests/kvm/include/x86/sev.h
index 82c11c81a956..3003dc837fb7 100644
--- a/tools/testing/selftests/kvm/include/x86/sev.h
+++ b/tools/testing/selftests/kvm/include/x86/sev.h
@@ -71,6 +71,11 @@ kvm_static_assert(SEV_RET_SUCCESS == 0);
void sev_vm_init(struct kvm_vm *vm);
void sev_es_vm_init(struct kvm_vm *vm);
+static inline void vmgexit(void)
+{
+ __asm__ __volatile__("rep; vmmcall");
+}
+
static inline void sev_register_encrypted_memory(struct kvm_vm *vm,
struct userspace_mem_region
*region)
{
diff --git a/tools/testing/selftests/kvm/x86/sev_smoke_test.c
b/tools/testing/selftests/kvm/x86/sev_smoke_test.c
index a1a688e75266..6812b94bf5b6 100644
--- a/tools/testing/selftests/kvm/x86/sev_smoke_test.c
+++ b/tools/testing/selftests/kvm/x86/sev_smoke_test.c
@@ -27,7 +27,7 @@ static void guest_sev_es_code(void)
* force "termination" to signal "done" via the GHCB MSR protocol.
*/
wrmsr(MSR_AMD64_SEV_ES_GHCB, GHCB_MSR_TERM_REQ);
- __asm__ __volatile__("rep; vmmcall");
+ vmgexit();
}
static void guest_sev_code(void)
