On Thu, Oct 19, 2017 at 2:11 AM, Zhang Yi <yi.z.zh...@linux.intel.com> wrote:
> From: Zhang Yi Z <yi.z.zh...@linux.intel.com>
>
> Current we only support Sub-page Protection on the 4k
> page table.
>
> Signed-off-by: Zhang Yi Z <yi.z.zh...@linux.intel.com>
> ---
> xen/arch/x86/hvm/vmx/vmx.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/xen/arch/x86/hvm/vmx/vmx.c b/xen/arch/x86/hvm/vmx/vmx.c
> index 04ae0d6..a4c24bb 100644
> --- a/xen/arch/x86/hvm/vmx/vmx.c
> +++ b/xen/arch/x86/hvm/vmx/vmx.c
> @@ -2497,6 +2497,12 @@ const struct hvm_function_table * __init
> start_vmx(void)
> vmx_function_table.get_guest_bndcfgs = vmx_get_guest_bndcfgs;
> }
>
> + if ( cpu_has_vmx_ept_spp )
I think this really only ought to happen if the command-line option
has also been enabled.
> + {
> + vmx_function_table.hap_capabilities &= ~HVM_HAP_SUPERPAGE_2MB;
> + vmx_function_table.hap_capabilities &= ~HVM_HAP_SUPERPAGE_1GB;
> + }
> +
> setup_vmcs_dump();
>
> lbr_tsx_fixup_check();
> --
> 2.7.4
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