From: Deepak Rawat <drawat.floss@gmail.com>
To: Gerd Hoffmann <kraxel@redhat.com>, Daniel Vetter <daniel@ffwll.ch>
Cc: linux-hyperv@vger.kernel.org,
Stephen Hemminger <sthemmin@microsoft.com>,
David Airlie <airlied@linux.ie>,
Haiyang Zhang <haiyangz@microsoft.com>,
Wei Liu <wei.liu@kernel.org>,
dri-devel@lists.freedesktop.org,
Michael Kelley <mikelley@microsoft.com>,
Jork Loeser <jloeser@microsoft.com>, Wei Hu <weh@microsoft.com>,
K Y Srinivasan <kys@microsoft.com>
Subject: Re: [RFC PATCH 1/2] drm/hyperv: Add DRM driver for hyperv synthetic video device
Date: Wed, 24 Jun 2020 17:47:23 -0700 [thread overview]
Message-ID: <94e6d4d0e047d306d96717b5cdd2442b21ea9932.camel@gmail.com> (raw)
In-Reply-To: <20200623161742.u6hnb7iodptv4s6t@sirius.home.kraxel.org>
> > > Thanks for the review. Unfortunately only the first vmbus message
> > > take
> > > effect and subsequent calls are ignored. I originally implemented
> > > using
> > > vram helpers but I figured out calling this vmbus message again
> > > won't
> > > change the vram location.
>
> /me notices there also is user_ctx. What is this?
Not sure, I will try to get in touch with hyper-v folks internally to
see if page-flip can be used.
>
> > I think that needs a very big comment. Maybe even enforce that with
> > a
> > "vram_gpa_set" boolean in the device structure, and complain if we
> > try to
> > do that twice.
> >
> > Also I guess congrats to microsoft for defining things like that :-
> > /
>
> I would be kind of surprised if the virtual device doesn't support
> pageflips. Maybe setting vram_gpa just isn't the correct way to do
> it. Is there a specification available?
>
> There are a number of microsoft folks in Cc: Anyone willing to
> comment?
>
> thanks,
> Gerd
>
> PS: And, yes, in case pageflips really don't work going with shmem
> helpers + blits is reasonable.
>
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next prev parent reply other threads:[~2020-06-25 0:47 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-22 11:06 [RFC PATCH 0/2] DRM driver for hyper-v synthetic video device Deepak Rawat
2020-06-22 11:06 ` [RFC PATCH 1/2] drm/hyperv: Add DRM driver for hyperv " Deepak Rawat
2020-06-22 12:46 ` Gerd Hoffmann
2020-06-22 22:20 ` Deepak Rawat
2020-06-23 9:42 ` Daniel Vetter
2020-06-23 16:17 ` Gerd Hoffmann
2020-06-25 0:47 ` Deepak Rawat [this message]
2020-06-22 15:19 ` Sam Ravnborg
2020-06-22 22:43 ` Deepak Rawat
2020-06-23 7:59 ` Thomas Zimmermann
2020-06-23 9:12 ` Deepak Rawat
2020-06-23 9:19 ` Thomas Zimmermann
2020-06-23 2:31 ` Dexuan Cui
2020-06-23 6:48 ` Deepak Rawat
2020-06-23 21:58 ` Dexuan Cui
2020-06-22 11:06 ` [RFC PATCH 2/2] MAINTAINERS: Add maintainer for hyperv " Deepak Rawat
2020-06-28 23:01 ` [RFC PATCH 0/2] DRM driver for hyper-v synthetic " Daniel Vetter
2020-09-10 8:19 [RFC PATCH 1/2] drm/hyperv: Add DRM driver for hyperv " Tang, Shaofeng
2020-09-11 0:38 ` Deepak Rawat
2020-11-15 9:14 ` Thomas Zimmermann
2020-11-15 17:55 ` Deepak Rawat
2020-11-15 18:58 ` Thomas Zimmermann
2020-11-16 9:58 ` Daniel Vetter
2020-11-16 16:36 ` Deepak Rawat
2020-09-28 15:58 Marcin Skarbek
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