On 2017.06.05 14:55:41 +0800, Tina Zhang wrote:
> Enable the guest i915 full ppgtt functionality when host can provide this
> capability. vgt_caps is introduced to guest i915 driver to get the vgpu
> capabilities from the device model. VGT_CPAS_FULL_PPGTT is one of the
> capabilities type to let guest i915 dirver know that the guest i915 full
> ppgtt is supported by device model.
>
> Notice that the minor version of pvinfo isn't bumped because of this
> vgt_caps introduction, due to older guest would be broken by simply
> increasing the pvinfo version. Although the pvinfo minor version doesn't
> increase, the compatibility won't be blocked. The compatibility is ensured
> by checking the value of caps field in pvinfo. Zero means no full ppgtt
> support and BIT(2) means this feature is provided.
>
> Changes since v1:
> - Use u32 instead of uint32_t (Joonas)
> - Move VGT_CAPS_FULL_PPGTT introduction to this patch and use #define
> instead of enum (Joonas)
> - Rewrite the vgpu full ppgtt capability checking logic. (Joonas)
> - Some coding style refine. (Joonas)
>
> Changes since v2:
> - Divide the whole patch set into two separate patch series, with one
> patch in i915 side to check guest i915 full ppgtt capability and enable
> it when this capability is supported by the device model, and the other
> one in gvt side which fixs the blocking issue and enables the device
> model to provide the capability to guest. And this patch focuses on guest
> i915 side. (Joonas)
> - Change the title from "introduce vgt_caps to pvinfo" to
> "Enable guest i915 full ppgtt functionality". (Tina)
>
> Change since v3:
> - Add some comments about pvinfo caps and version. (Joonas)
>
> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx> in v2
> Signed-off-by: Tina Zhang <tina.zhang@xxxxxxxxx>
>
I'm a bit lost to find which one is the gvt change for this, could you resend
full series against latest gvt-staging again?
> diff --git a/drivers/gpu/drm/i915/i915_pvinfo.h b/drivers/gpu/drm/i915/i915_pvinfo.h
> index c0cb297..8dc0664 100644
> --- a/drivers/gpu/drm/i915/i915_pvinfo.h
> +++ b/drivers/gpu/drm/i915/i915_pvinfo.h
> @@ -53,12 +53,18 @@ enum vgt_g2v_type {
> VGT_G2V_MAX,
> };
>
> +/*
> + * VGT capabilities type
> + */
> +#define VGT_CAPS_FULL_PPGTT BIT(2)
> +
As I think your gvt change will depend on this bit too, so have to merge
them in order, right? Joonas, ok for me to merge through gvt tree together
for -next pull?
--
Open Source Technology Center, Intel ltd.
$gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827
Attachment:
signature.asc
Description: PGP signature
_______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
