linux-kernel - Re: [virtio-dev] Re: [PATCH] Add virtio gpu driver.

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Date:	Fri, 27 Mar 2015 09:08:26 +0100
From:	Gerd Hoffmann <kraxel@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	virtio-dev@...ts.oasis-open.org, Dave Airlie <airlied@...il.com>,
	Dave Airlie <airlied@...hat.com>,
	David Airlie <airlied@...ux.ie>,
	Rusty Russell <rusty@...tcorp.com.au>,
	open list <linux-kernel@...r.kernel.org>,
	"open list:DRM DRIVERS" <dri-devel@...ts.freedesktop.org>,
	"open list:VIRTIO CORE, NET..." 
	<virtualization@...ts.linux-foundation.org>,
	"open list:ABI/API" <linux-api@...r.kernel.org>
Subject: Re: [virtio-dev] Re: [PATCH] Add virtio gpu driver.

  Hi,

> > 
> > Completely different thing crossing my mind:  I think we can make
> > virtio-vga fully compatible with stdvga.  stdvga has two bars, memory
> > (#0) and mmio (#2).  We can make the mmio bar larger and place all the
> > virtio regions there.
> > 
> 
> Full compatibility with some standard sounds like a better motivation,
> yes.

Ok, I'll look into it.

> > I think in any case I'll go split off the vga compatibility bits to a
> > different patch (and possible a separate patch series).
> > 
> > cheers,
> >   Gerd
> 
> Will you still need me to change core to claim specific memory only?

That would be great, yes.  The resource conflict with vesafb/efifb will
stay no matter how we design the pci resource layout of virtio-vga.

cheers,
  Gerd



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