[PATCH v9 35/40] KVM: selftests: Split off load_evmcs() from load_vmcs()

Vitaly Kuznetsov
2022-08-03T13:49:12Z

In preparation to putting Hyper-V specific test pages to a dedicated
struct, move eVMCS load logic from load_vmcs(). Tests call load_vmcs()
directly and the only one which needs 'enlightened' version is
evmcs_test so there's not much gain in having this merged.

Temporary pass both GPA and HVA to load_evmcs().

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
.../selftests/kvm/include/x86_64/evmcs.h | 10 ++++++
tools/testing/selftests/kvm/lib/x86_64/vmx.c | 33 ++++++++-----------
.../testing/selftests/kvm/x86_64/evmcs_test.c | 4 +--
3 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86_64/evmcs.h b/tools/testing/selftests/kvm/include/x86_64/evmcs.h
index d91e5cc3feb9..77b2bb8de96e 100644
--- a/tools/testing/selftests/kvm/include/x86_64/evmcs.h
+++ b/tools/testing/selftests/kvm/include/x86_64/evmcs.h
@@ -245,6 +245,16 @@ static inline int evmcs_vmptrld(uint64_t vmcs_pa, void *vmcs)
return 0;
}

+static inline bool load_evmcs(uint64_t enlightened_vmcs_gpa, void *enlightened_vmcs)
+{
+ if (evmcs_vmptrld(enlightened_vmcs_gpa, enlightened_vmcs))
+ return false;
+
+ current_evmcs->revision_id = EVMCS_VERSION;
+
+ return true;
+}
+
static inline int evmcs_vmptrst(uint64_t *value)
{
*value = current_vp_assist->current_nested_vmcs &
diff --git a/tools/testing/selftests/kvm/lib/x86_64/vmx.c b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
index 80a568c439b8..f8acbc7c8d7d 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/vmx.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/vmx.c
@@ -169,26 +169,19 @@ bool prepare_for_vmx_operation(struct vmx_pages *vmx)

bool load_vmcs(struct vmx_pages *vmx)
{
- if (!enable_evmcs) {
- /* Load a VMCS. */
- *(uint32_t *)(vmx->vmcs) = vmcs_revision();
- if (vmclear(vmx->vmcs_gpa))
- return false;
-
- if (vmptrld(vmx->vmcs_gpa))
- return false;
-
- /* Setup shadow VMCS, do not load it yet. */
- *(uint32_t *)(vmx->shadow_vmcs) =
- vmcs_revision() | 0x80000000ul;
- if (vmclear(vmx->shadow_vmcs_gpa))
- return false;
- } else {
- if (evmcs_vmptrld(vmx->enlightened_vmcs_gpa,
- vmx->enlightened_vmcs))
- return false;
- current_evmcs->revision_id = EVMCS_VERSION;
- }
+ /* Load a VMCS. */
+ *(uint32_t *)(vmx->vmcs) = vmcs_revision();
+ if (vmclear(vmx->vmcs_gpa))
+ return false;
+
+ if (vmptrld(vmx->vmcs_gpa))
+ return false;
+
+ /* Setup shadow VMCS, do not load it yet. */
+ *(uint32_t *)(vmx->shadow_vmcs) =
+ vmcs_revision() | 0x80000000ul;
+ if (vmclear(vmx->shadow_vmcs_gpa))
+ return false;

return true;
}
diff --git a/tools/testing/selftests/kvm/x86_64/evmcs_test.c b/tools/testing/selftests/kvm/x86_64/evmcs_test.c
index 9007fb04343b..5a4c8b1873aa 100644
--- a/tools/testing/selftests/kvm/x86_64/evmcs_test.c
+++ b/tools/testing/selftests/kvm/x86_64/evmcs_test.c
@@ -81,10 +81,10 @@ void guest_code(struct vmx_pages *vmx_pages)
enable_vp_assist(vmx_pages->vp_assist_gpa, vmx_pages->vp_assist);
evmcs_enable();

- GUEST_ASSERT(vmx_pages->vmcs_gpa);
GUEST_ASSERT(prepare_for_vmx_operation(vmx_pages));
GUEST_SYNC(3);
- GUEST_ASSERT(load_vmcs(vmx_pages));
+ GUEST_ASSERT(load_evmcs(vmx_pages->enlightened_vmcs_gpa,
+ vmx_pages->enlightened_vmcs));
GUEST_ASSERT(vmptrstz() == vmx_pages->enlightened_vmcs_gpa);

GUEST_SYNC(4);
--
2.35.3