PML in VM depends on "enable PML" in VM-execution control, check this
before vmwrite to PMLADDR, because this field doesn't exist if PML is
disabled in VM-execution control.
Signed-off-by: Robert Hoo <robert.hu@xxxxxxxxxxxxxxx>
---
x86/vmx_tests.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/x86/vmx_tests.c b/x86/vmx_tests.c
index 4f712eb..8663112 100644
--- a/x86/vmx_tests.c
+++ b/x86/vmx_tests.c
@@ -1502,13 +1502,16 @@ static int pml_init(struct vmcs *vmcs)
return VMX_TEST_EXIT;
}
+ ctrl_cpu = vmcs_read(CPU_EXEC_CTRL1) & CPU_PML;
+ if (!ctrl_cpu) {
+ printf("\tPML is not enabled\n");
+ return VMX_TEST_EXIT;
+ }
+
pml_log = alloc_page();
vmcs_write(PMLADDR, (u64)pml_log);
vmcs_write(GUEST_PML_INDEX, PML_INDEX - 1);
- ctrl_cpu = vmcs_read(CPU_EXEC_CTRL1) | CPU_PML;
- vmcs_write(CPU_EXEC_CTRL1, ctrl_cpu);
-
return VMX_TEST_START;
}
--
1.8.3.1
