From: Sheng Yang <sheng@linux.intel.com>
To: kvm@vger.kernel.org
Cc: Harald Braumann <harry@unheit.net>, Sheng Yang <yasker@gmail.com>,
Joerg Rodel <joerg.roedel@amd.com>
Subject: Re: PCI pass-through: guest can't map memory
Date: Mon, 12 Jan 2009 15:54:46 +0800 [thread overview]
Message-ID: <200901121554.47609.sheng@linux.intel.com> (raw)
In-Reply-To: <20090111145915.08d296bc@sbs173>
On Sunday 11 January 2009 21:59:15 Harald Braumann wrote:
> On Sun, 11 Jan 2009 12:35:12 +0800
>
> Sheng Yang <yasker@gmail.com> wrote:
> > On Sun, Jan 11, 2009 at 01:12:42AM +0100, Harald Braumann wrote:
> > > Hi!
> > >
> > > (please CC me, as I'm not subscribed)
> > >
> > > I try to give the guest (Windows XP) direct access to one of the
> > > graphics adaptors.
> > > [...]
> >
> > Hi Harry
> >
> > I think we at least have one issue here: currently we can't support
> > graphics card assignment... Graphics card is more complex than others
> > due to video bios we must support. So it's not mature now (for both
> > KVM and Xen). Please wait for our future releases(though I have no
> > idea when it would be supported, maybe several monthes or
> > longer... :( ).
>
> Hi,
>
> thanks for the reply. I've found this on that matter:
> http://thread.gmane.org/gmane.comp.emulators.kvm.devel/26785/focus=26971
> (device-assignment code doesn't update the cards BAR). Is that the
> problem, you're talking about? Or is there something else that's still
> missing? So I know what to look for in the changelogs.
>
Hi Harry
The thread is talking about option ROM, which offer extra function on some PCI
card, but not video BIOS which is basic component for the graphics card...
Currently we are using emulated Cirrus 54xx by default, as well as it's video
BIOS. Device assignment's video BIOS support would still miss in a period...
We would say explicit that we have supported graphics card after we enable it.
:)
--
regards
Yang, Sheng
prev parent reply other threads:[~2009-01-12 7:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-11 0:12 PCI pass-through: guest can't map memory Harald Braumann
2009-01-11 4:35 ` Sheng Yang
2009-01-11 13:59 ` Harald Braumann
2009-01-12 7:54 ` Sheng Yang [this message]
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