Use the standard non-canonical value of repeating 'a' instead of a
custom (1 << 63) value in test_mtf3. When PCID is enabled, bit 63 is
a flag that controls TLB swithching on MOV CR3 and is not included in
the canonical check of CR3, i.e. if CR4.PCIDE=1 then the test will load
0 into CR3 and all manner of confusion things happen.
Fixes: 46cc038c6afb8 ("x86: VMX: Add tests for monitor trap flag")
Cc: Oliver Upton <oupton@xxxxxxxxxx>
Cc: Jim Mattson <jmattson@xxxxxxxxxx>
Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
---
x86/vmx_tests.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/x86/vmx_tests.c b/x86/vmx_tests.c
index cb42a2d..32e3d4f 100644
--- a/x86/vmx_tests.c
+++ b/x86/vmx_tests.c
@@ -5107,7 +5107,7 @@ static void test_mtf_guest(void)
* MOV RAX is done before the VMCALL such that MTF is only enabled
* for the instruction under test.
*/
- "mov $0x8000000000000000, %rax;\n\t"
+ "mov $0xaaaaaaaaaaaaaaaa, %rax;\n\t"
"vmcall;\n\t"
"mov %rax, %cr3;\n\t"
"test_mtf3:\n\t"
--
2.26.0
