[PATCH 22/22] drm/i915: Enable platform support for vGPU huge gtt pages
Du, Changbin
changbin.du at intel.com
Wed Dec 20 08:14:19 UTC 2017
On Wed, Dec 20, 2017 at 04:11:05PM +0800, Zhenyu Wang wrote:
> On 2017.12.20 15:48:35 +0800, changbin.du at intel.com wrote:
> > From: Changbin Du <changbin.du at intel.com>
> >
> > Now GVTg supports shadowing both 2M/64K huge gtt pages. So this is to
> > remove the restriction on guest side.
> >
> > Signed-off-by: Changbin Du <changbin.du at intel.com>
> > ---
> > drivers/gpu/drm/i915/i915_gem.c | 9 ---------
> > 1 file changed, 9 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> > index dca15c1..727df2f 100644
> > --- a/drivers/gpu/drm/i915/i915_gem.c
> > +++ b/drivers/gpu/drm/i915/i915_gem.c
> > @@ -5159,15 +5159,6 @@ int i915_gem_init(struct drm_i915_private *dev_priv)
> > {
> > int ret;
> >
> > - /*
> > - * We need to fallback to 4K pages since gvt gtt handling doesn't
> > - * support huge page entries - we will need to check either hypervisor
> > - * mm can support huge guest page or just do emulation in gvt.
> > - */
> > - if (intel_vgpu_active(dev_priv))
> > - mkwrite_device_info(dev_priv)->page_sizes =
> > - I915_GTT_PAGE_SIZE_4K;
> > -
>
> For i915 guest, can't simply remove this, but require new pvinfo
> capability bit for compatibility check.
>
You mean all future drivers need to be compatible with old release?
> > dev_priv->mm.unordered_timeline = dma_fence_context_alloc(1);
> >
> > if (HAS_LOGICAL_RING_CONTEXTS(dev_priv)) {
> > --
> > 2.7.4
> >
> > _______________________________________________
> > intel-gvt-dev mailing list
> > intel-gvt-dev at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/intel-gvt-dev
>
> --
> Open Source Technology Center, Intel ltd.
>
> $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827
--
Thanks,
Changbin Du
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