Re: [PATCH v3 24/28] drm/xe/pf: Enable SR-IOV VF migration

[Michal Wajdeczko]

On 10/30/2025 9:31 PM, Michał Winiarski wrote:
> All of the necessary building blocks are now in place to support SR-IOV
> VF migration.
> Enable the feature without the need to pass feature enabling debug flags
> for those platforms and rely on .has_memirq presence instead (like with
> VF resource fixup).
> 
> Signed-off-by: Michał Winiarski <michal.winiar...@intel.com>
> ---
>  drivers/gpu/drm/xe/xe_sriov_pf_migration.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/xe/xe_sriov_pf_migration.c 
> b/drivers/gpu/drm/xe/xe_sriov_pf_migration.c
> index 6992c227e5a44..c4e9b0ff5b3ae 100644
> --- a/drivers/gpu/drm/xe/xe_sriov_pf_migration.c
> +++ b/drivers/gpu/drm/xe/xe_sriov_pf_migration.c
> @@ -50,8 +50,10 @@ bool xe_sriov_pf_migration_supported(struct xe_device *xe)
>  
>  static bool pf_check_migration_support(struct xe_device *xe)
>  {
> -     /* XXX: for now this is for feature enabling only */
> -     return IS_ENABLED(CONFIG_DRM_XE_DEBUG);
> +     if (xe_device_has_memirq(xe))
> +             return true;
> +
> +     return false;

maybe simpler:

        /* all platforms with MEMIRQ should work */
        return xe_device_has_memirq(xe)

and shouldn't we also check somewhere that we have the right GuC FW?
here is likely too early, but maybe we need additional check in:

        xe_sriov_pf_init_late(xe) ?

>  }
>  
>  static void pf_migration_cleanup(void *arg)