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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.
> 


WARNING: multiple messages have this Message-ID (diff)
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.
> 

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

  reply	other threads:[~2020-06-25  0:47 UTC|newest]

Thread overview: 43+ 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 ` Deepak Rawat
2020-06-22 11:06 ` [RFC PATCH 1/2] drm/hyperv: Add DRM driver for hyperv " Deepak Rawat
2020-06-22 11:06   ` Deepak Rawat
2020-06-22 12:46   ` Gerd Hoffmann
2020-06-22 12:46     ` Gerd Hoffmann
2020-06-22 22:20     ` Deepak Rawat
2020-06-22 22:20       ` Deepak Rawat
2020-06-23  9:42       ` Daniel Vetter
2020-06-23  9:42         ` Daniel Vetter
2020-06-23 16:17         ` Gerd Hoffmann
2020-06-23 16:17           ` Gerd Hoffmann
2020-06-25  0:47           ` Deepak Rawat [this message]
2020-06-25  0:47             ` Deepak Rawat
2020-06-22 15:19   ` Sam Ravnborg
2020-06-22 15:19     ` Sam Ravnborg
2020-06-22 22:43     ` Deepak Rawat
2020-06-22 22:43       ` Deepak Rawat
2020-06-23  7:59     ` Thomas Zimmermann
2020-06-23  7:59       ` Thomas Zimmermann
2020-06-23  9:12       ` Deepak Rawat
2020-06-23  9:12         ` Deepak Rawat
2020-06-23  9:19         ` Thomas Zimmermann
2020-06-23  9:19           ` Thomas Zimmermann
2020-06-22 18:45   ` kernel test robot
2020-06-23  2:31   ` Dexuan Cui
2020-06-23  2:31     ` Dexuan Cui
2020-06-23  6:48     ` Deepak Rawat
2020-06-23  6:48       ` Deepak Rawat
2020-06-23 21:58       ` Dexuan Cui
2020-06-23 21:58         ` Dexuan Cui
2020-06-22 11:06 ` [RFC PATCH 2/2] MAINTAINERS: Add maintainer for hyperv " Deepak Rawat
2020-06-22 11:06   ` Deepak Rawat
2020-06-28 23:01 ` [RFC PATCH 0/2] DRM driver for hyper-v synthetic " Daniel Vetter
2020-06-28 23:01   ` 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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