> On Sep 25, 2019, at 9:14 AM, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote: > > Extend the tests to cover the host address size bit. > > Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx> > --- > x86/vmx_tests.c | 126 +++++++++++++++++++++++++++++++++----------------------- > 1 file changed, 74 insertions(+), 52 deletions(-) I get the following results with this test on Skylake bare-metal: PASS: HOST_EFER EFER_LMA bit turned off, controls off: vmlaunch succeeds PASS: HOST_EFER EFER_LMA bit turned on, controls off: vmlaunch succeeds PASS: HOST_EFER EFER_LMA bit turned off, controls on: vmlaunch fails PASS: HOST_EFER EFER_LMA bit turned off, controls on: VMX inst error is 8 (actual 8) PASS: HOST_EFER EFER_LMA bit turned on, controls on: vmlaunch succeeds PASS: HOST_EFER EFER_LME bit turned off, controls off: vmlaunch succeeds PASS: HOST_EFER EFER_LME bit turned on, controls off: vmlaunch succeeds PASS: HOST_EFER EFER_LME bit turned off, controls on: vmlaunch fails PASS: HOST_EFER EFER_LME bit turned off, controls on: VMX inst error is 8 (actual 8) PASS: HOST_EFER EFER_LME bit turned on, controls on: vmlaunch succeeds PASS: HOST_EFER EFER_LMA bit turned off, controls off: vmlaunch fails FAIL: HOST_EFER EFER_LMA bit turned off, controls off: VMX inst error is 8 (actual 7) PASS: HOST_EFER EFER_LMA bit turned on, controls off: vmlaunch fails FAIL: HOST_EFER EFER_LMA bit turned on, controls off: VMX inst error is 8 (actual 7) PASS: HOST_EFER EFER_LMA bit turned off, controls on: vmlaunch fails PASS: HOST_EFER EFER_LMA bit turned off, controls on: VMX inst error is 8 (actual 8) PASS: HOST_EFER EFER_LMA bit turned on, controls on: vmlaunch succeeds PASS: HOST_EFER EFER_LME bit turned off, controls off: vmlaunch fails FAIL: HOST_EFER EFER_LME bit turned off, controls off: VMX inst error is 8 (actual 7) PASS: HOST_EFER EFER_LME bit turned on, controls off: vmlaunch fails FAIL: HOST_EFER EFER_LME bit turned on, controls off: VMX inst error is 8 (actual 7) PASS: HOST_EFER EFER_LME bit turned off, controls on: vmlaunch fails PASS: HOST_EFER EFER_LME bit turned off, controls on: VMX inst error is 8 (actual 8) PASS: HOST_EFER EFER_LME bit turned on, controls on: vmlaunch succeeds Apparently, turning the controls off, causes some “VM entry with invalid control field” (7) instead of “VM-entry with invalid host-state field”. According to the SDM, checks of control fields and host field are not ordered. But I do not know what exactly causes the failure.
