From: Anthony Liguori <anthony@codemonkey.ws>
To: Avi Kivity <avi@redhat.com>
Cc: Dave Airlie <airlied@gmail.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] vmware vga + kvm interaction
Date: Sun, 13 Dec 2009 11:59:38 -0600 [thread overview]
Message-ID: <4B252B8A.1070700@codemonkey.ws> (raw)
In-Reply-To: <4B24C6EA.5030305@redhat.com>
Avi Kivity wrote:
> On 12/13/2009 10:55 AM, Dave Airlie wrote:
>> If I boot an F12 LiveCD with vmware VGA without KVM enabled, I get the
>> syslinux boot screen and can pick
>> options, the same qemu run with -enable-kvm, I just get a blank screen.
>>
>> Anyone have any clues on why this might be?
>>
>>
>
> One of the niceties of vmvga is that it accesses cpu registers in
> response to an I/O instruction. Maybe this bit is broken. Does your
> hw/vmport.c have cpu_synchronize_state() in vmport_ioport_read()?
>
> Hmm, upstream doesn't, so no surprise it is broken.
vmware-vga does not use vmport.
The issue is about related to dirty tracking and how the vbe bios memory
gets mapped. I've posted patches on the list before.
Regards,
Anthony Liguori
next prev parent reply other threads:[~2009-12-13 17:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-13 8:55 [Qemu-devel] vmware vga + kvm interaction Dave Airlie
2009-12-13 10:50 ` Avi Kivity
2009-12-13 17:59 ` Anthony Liguori [this message]
2009-12-13 20:00 ` Dave Airlie
2009-12-14 14:28 ` Anthony Liguori
2009-12-15 1:33 ` Dave Airlie
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