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From: Jan Kiszka <jan.kiszka@siemens.com>
To: Avi Kivity <avi@redhat.com>
Cc: "Alex Williamson" <alex.williamson@redhat.com>,
	"Prasad Joshi" <prasadjoshi124@gmail.com>,
	"André Weidemann" <Andre.Weidemann@web.de>,
	"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
	"Oswaldo Cadenas" <oswaldo.cadenas@gmail.com>,
	"Nikolaev, Maxim" <maxim.nikolaev@siemens.com>
Subject: Re: Graphics pass-through
Date: Wed, 11 May 2011 15:08:54 +0200	[thread overview]
Message-ID: <4DCA8A66.4080304@siemens.com> (raw)
In-Reply-To: <4DCA7217.5020806@redhat.com>

On 2011-05-11 13:25, Avi Kivity wrote:
> On 05/09/2011 06:48 PM, Alex Williamson wrote:
>>>  That's an interesting trace! We'll check this here, but I bet it
>>>  contributes to the problems. Our FX 3800 has 1G memory...
>>
>> Yes, qemu leaves far too little MMIO space to think about assigning
>> graphics cards.  Both of my cards have 512MB and I hacked qemu to leave
>> a bigger gap via something like:
>>
> 
> What about 64-bit BARs?

Aren't they backward compatible? Or do you think some guest drivers may
assume to find their 64-bit capable bars also registered as such and get
upset when seeing them as 32-bit ones?

Jan

-- 
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux

  reply	other threads:[~2011-05-11 15:55 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <AANLkTikNHRcDquYOL3NhsxkkBYcE48nMyu4+t8t=19e7@mail.gmail.com>
2011-01-25 23:03 ` Fwd: Graphics pass-through Prasad Joshi
2011-01-26  5:12   ` Alex Williamson
2011-01-26  8:17     ` Gerd Hoffmann
2011-01-27 11:56     ` André Weidemann
2011-01-28  0:45       ` Alex Williamson
2011-01-28 17:29         ` André Weidemann
2011-01-28 16:25           ` Alex Williamson
2011-05-05  8:50         ` Jan Kiszka
2011-05-05 15:17           ` Alex Williamson
2011-05-09 11:14             ` Jan Kiszka
2011-05-09 14:29               ` Alex Williamson
2011-05-09 15:02                 ` Jan Kiszka
2011-05-09 14:55               ` Prasad Joshi
2011-05-09 15:27                 ` Jan Kiszka
2011-05-09 15:40                   ` Prasad Joshi
2011-05-09 15:48                   ` Alex Williamson
2011-05-09 16:00                     ` Jan Kiszka
2011-05-11 11:25                     ` Avi Kivity
2011-05-11 13:08                       ` Jan Kiszka [this message]
2011-05-11 13:26                         ` Avi Kivity
2011-05-11 13:50                           ` Jan Kiszka
2011-05-11 13:54                             ` Avi Kivity
2011-05-11 14:06                               ` Jan Kiszka
2011-05-11 14:14                                 ` Avi Kivity
2011-05-11 11:23                   ` Avi Kivity
2011-05-11 12:31                     ` Jan Kiszka
2011-05-10 10:53                 ` Gerd Hoffmann

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