[Xen-devel] [XTF PATCH 15/16] vvmx: test vmxon in VMX root w/ CPL = 0 and w/ current VMCS

[Haozhong Zhang <haozhong.zhang@xxxxxxxxx>]

VMfailvalid(15) is expected in this test.

Signed-off-by: Haozhong Zhang <haozhong.zhang@xxxxxxxxx>
---
 tests/vvmx/vmxon.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/tests/vvmx/vmxon.c b/tests/vvmx/vmxon.c
index ec7ee7e..705a04d 100644
--- a/tests/vvmx/vmxon.c
+++ b/tests/vvmx/vmxon.c
@@ -4,6 +4,7 @@
 
 static uint8_t vmxon_region[PAGE_SIZE] __aligned(PAGE_SIZE);
 static uint8_t vmxon_region_2nd[PAGE_SIZE] __aligned(PAGE_SIZE);
+static uint8_t vmcs[PAGE_SIZE] __aligned(PAGE_SIZE);
 
 /**
  * vmxon with CR4.VMXE cleared
@@ -191,6 +192,23 @@ static bool test_vmxon_in_root_user_novmcs(void)
                               VMXERR_FAULT, EXINFO_SYM(GP, 0), 0);
 }
 
+/**
+ * vmxon in VMX root w/ CPL = 0 and w/ current VMCS
+ *
+ * Expect: VMfailvalid(15)
+ */
+static bool test_vmxon_in_root_cpl0_vmcs(void)
+{
+    clear_vmcs(vmxon_region_2nd, get_vmcs_revid());
+
+    exinfo_t fault;
+    uint8_t ret = vmxon((uint64_t)vmxon_region_2nd, &fault);
+
+    return handle_vmxinsn_err(__func__, ret, fault,
+                              VMXERR_VMFAIL_VALID, 0,
+                              VMX_INSN_VMXON_IN_VMX_ROOT);
+}
+
 bool test_vmxon(void)
 {
     if ( !test_vmxon_novmxe() )
@@ -223,6 +241,17 @@ bool test_vmxon(void)
     if ( !test_vmxon_in_root_user_novmcs() )
         return false;
 
+    clear_vmcs(vmcs, get_vmcs_revid());
+    if ( vmptrld((uint64_t)vmcs, NULL) )
+    {
+        xtf_failure("Fail: %s: unexpected failure from vmptrld 0x%"PRIx64"\n",
+                    __func__, (uint64_t)vmcs);
+        return false;
+    }
+
+    if ( !test_vmxon_in_root_cpl0_vmcs() )
+        return false;
+
     return true;
 }
 
-- 
2.10.1


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