Re: [PATCH 1/3] kvm-unit-tests: nVMX: Test GUEST_BASE_GDTR and GUEST_BASE_IDTR on vmentry of nested guests

[Sean Christopherson <sean.j.christopherson@intel.com>]

On Fri, May 22, 2020 at 08:26:01PM -0400, Krish Sadhukhan wrote:
> According to section "Checks on Guest Descriptor-Table Registers" in Intel
> SDM vol 3C, the following check is performed on the Guest Descriptor-Table
> Registers on vmentry of nested guests:
> 
>     - On processors that support Intel 64 architecture, the base-address
>       fields must contain canonical addresses.
> 
> Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
> ---
>  x86/vmx_tests.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/x86/vmx_tests.c b/x86/vmx_tests.c
> index 68f93d3..fa27d99 100644
> --- a/x86/vmx_tests.c
> +++ b/x86/vmx_tests.c
> @@ -7827,6 +7827,11 @@ static void vmx_guest_state_area_test(void)
>  	test_load_guest_perf_global_ctrl();
>  	test_load_guest_bndcfgs();
>  
> +#ifdef __x86_64__

Aren't the VMX tests 64-bit only?

> +	test_canonical(GUEST_BASE_GDTR, "GUEST_BASE_GDTR", false);
> +	test_canonical(GUEST_BASE_IDTR, "GUEST_BASE_IDTR", false);
> +#endif
> +
>  	/*
>  	 * Let the guest finish execution
>  	 */
> -- 
> 1.8.3.1
>