We will allow this behavior for KVM in some specific cases
(CR8 load/store exits enabled, virtualize APIC accesses
disabled). Ensure these specific values of the controls
are there in the VMCS, and remove the XFAIL.
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
x86/vmx_tests.c | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/x86/vmx_tests.c b/x86/vmx_tests.c
index ab7e8cc..0ca5363 100644
--- a/x86/vmx_tests.c
+++ b/x86/vmx_tests.c
@@ -3669,9 +3669,17 @@ static void test_msr_bitmap(void)
*/
static void test_apic_virt_addr(void)
{
+ /*
+ * Ensure the processor will never use the virtual-APIC page, since
+ * we will point it to invalid RAM. Otherwise KVM is puzzled about
+ * what we're trying to achieve and fails vmentry.
+ */
+ u32 cpu_ctrls0 = vmcs_read(CPU_EXEC_CTRL0);
+ vmcs_write(CPU_EXEC_CTRL0, cpu_ctrls0 | CPU_CR8_LOAD | CPU_CR8_STORE);
test_vmcs_addr_reference(CPU_TPR_SHADOW, APIC_VIRT_ADDR,
"virtual-APIC address", "Use TPR shadow",
- PAGE_SIZE, true, true);
+ PAGE_SIZE, false, true);
+ vmcs_write(CPU_EXEC_CTRL0, cpu_ctrls0);
}
/*
--
1.8.3.1
