From: Gerd Hoffmann <kraxel@redhat.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: "Prasad Joshi" <prasadjoshi124@gmail.com>,
kvm@vger.kernel.org,
"Oswaldo Cadenas" <oswaldo.cadenas@gmail.com>,
"André Weidemann" <Andre.Weidemann@web.de>
Subject: Re: Graphics pass-through
Date: Wed, 26 Jan 2011 09:17:32 +0100 [thread overview]
Message-ID: <4D3FD89C.7050104@redhat.com> (raw)
In-Reply-To: <AANLkTi=mTV591AMNkCVynq_BP04z_vnxn1=Dj4kPK-NA@mail.gmail.com>
Hi,
>> The changes we made are very less, mostly disabling default QEMU VGA.
>>
>> But there are few problems that we are still working on
>> 1. The display on the monitor, probably only appears after the KMS is
>> enabled. It does not display the grub menu and booting log.
>
> Sounds like you're not enabling legacy VGA MMIO and I/O port space to
> the physical device. Without card specific drivers, seabios and grub
> have no way to write to the screen.
There is a initialization order issue with the legacy vga memory @
0xa00000 and the piix3 chipset. Booting a guest with '-vga none -device
VGA' has the same effect (no boot messages).
cheers,
Gerd
next prev parent reply other threads:[~2011-01-26 8:17 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 [this message]
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
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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