[kvm-unit-tests PATCH 21/39] nVMX: Skip EPT tests if INVEPT(SINGLE_CONTEXT) is unsupported

[Sean Christopherson <seanjc@google.com>]

EPT can technically be supported without INVEPT(SINGLE_CONTEXT), skip the
EPT tests if SINGLE_CONTEXT isn't supported as it's heavily used (without
the result being checked, yay).

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 x86/vmx.h       | 8 ++++++++
 x86/vmx_tests.c | 5 +++++
 2 files changed, 13 insertions(+)

diff --git a/x86/vmx.h b/x86/vmx.h
index dd869c2..472b28a 100644
--- a/x86/vmx.h
+++ b/x86/vmx.h
@@ -725,6 +725,14 @@ extern union vmx_ctrl_msr ctrl_exit_rev;
 extern union vmx_ctrl_msr ctrl_enter_rev;
 extern union vmx_ept_vpid  ept_vpid;
 
+static inline bool is_invept_type_supported(u64 type)
+{
+	if (type < INVEPT_SINGLE || type > INVEPT_GLOBAL)
+		return false;
+
+	return ept_vpid.val & (EPT_CAP_INVEPT_SINGLE << (type - INVEPT_SINGLE));
+}
+
 extern u64 *bsp_vmxon_region;
 extern bool launched;
 
diff --git a/x86/vmx_tests.c b/x86/vmx_tests.c
index 97fa8ce..cbf22e3 100644
--- a/x86/vmx_tests.c
+++ b/x86/vmx_tests.c
@@ -1148,8 +1148,13 @@ static int ept_init_common(bool have_ad)
 	int ret;
 	struct pci_dev pcidev;
 
+	/* INVEPT is required by the EPT violation handler. */
+	if (!is_invept_type_supported(INVEPT_SINGLE))
+		return VMX_TEST_EXIT;
+
 	if (setup_ept(have_ad))
 		return VMX_TEST_EXIT;
+
 	data_page1 = alloc_page();
 	data_page2 = alloc_page();
 	*((u32 *)data_page1) = MAGIC_VAL_1;
-- 
2.34.0.rc2.393.gf8c9666880-goog