Re: [PATCH] xen/cpu-policy: Add an IBRS -> AUTO_IBRS dependency

[Alejandro Vallejo <alejandro.vallejo@xxxxxxxxx>]

On Wed, May 31, 2023 at 04:30:28PM +0100, Andrew Cooper wrote:
> AUTO_IBRS is an extention over regular (AMD) IBRS, and needs hiding if IBRS is
> levelled out for any reason.
True that. My bad.

> ---
>  xen/tools/gen-cpuid.py | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/xen/tools/gen-cpuid.py b/xen/tools/gen-cpuid.py
> index f28ff708a2fc..973fcc1c64e8 100755
> --- a/xen/tools/gen-cpuid.py
> +++ b/xen/tools/gen-cpuid.py
> @@ -319,7 +319,7 @@ def crunch_numbers(state):
>          # as dependent features simplifies Xen's logic, and prevents the 
> guest
>          # from seeing implausible configurations.
>          IBRSB: [STIBP, SSBD, INTEL_PSFD],
> -        IBRS: [AMD_STIBP, AMD_SSBD, PSFD,
> +        IBRS: [AMD_STIBP, AMD_SSBD, PSFD, AUTO_IBRS,
>                 IBRS_ALWAYS, IBRS_FAST, IBRS_SAME_MODE],
>          AMD_STIBP: [STIBP_ALWAYS],
>  
> 
> base-commit: 465217b0f872602b4084a1b0fa2ef75377cb3589
> -- 
> 2.30.2
> 

LGTM

Alejandro