Re: [XEN PATCH v2 05/15] x86: introduce CONFIG_ALTP2M Kconfig option

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Wed, 15 May 2024, Sergiy Kibrik wrote:
> Add new option to make altp2m code inclusion optional.
> Currently altp2m support provided for VT-d only, so option is dependant on 
> VMX.
> 
> No functional change intended.
> 
> Signed-off-by: Sergiy Kibrik <Sergiy_Kibrik@xxxxxxxx>
> CC: Tamas K Lengyel <tamas@xxxxxxxxxxxxx>
> ---
>  xen/arch/x86/Kconfig | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/xen/arch/x86/Kconfig b/xen/arch/x86/Kconfig
> index 8c9f8431f0..2872b031a7 100644
> --- a/xen/arch/x86/Kconfig
> +++ b/xen/arch/x86/Kconfig
> @@ -358,6 +358,11 @@ config REQUIRE_NX
>         was unavailable. However, if enabled, Xen will no longer boot on
>         any CPU which is lacking NX support.
>  
> +config ALTP2M
> +     bool "Alternate P2M support"
> +     def_bool y
> +     depends on VMX && EXPERT

I think we need a small help text here, something like

Alternate-p2m allows a guest to manage multiple p2m guest physical "memory
views" (as opposed to a single p2m). Useful for memory introspection.


>  endmenu
>  
>  source "common/Kconfig"
> -- 
> 2.25.1
>