Re: kvm-userspace: VGA/VESA framebuffer broken

[Jan Kiszka <jan.kiszka@siemens.com>]

Avi Kivity wrote:
> Jan Kiszka wrote:
>> Hi,
>>
>> latest kvm-userspace git 6892f63c18a526c7b54bbde2f59287787eabe1f8
>> appears to have a bug /wrt VGA/VESA modes. I just fired up one of my
>> Linux test kernels which runs a framebuffer console in mode 0x317, but
>> the display just contains garbage. Reverting to
>> 82daa70a1d5bcad3a93150ffc5afbcb9e77361fb makes the problem disappear
>> again.
>>
>> I also tried latest qemu with -enable-kvm against the same kernel
>> modules, and the result is somehow better in that there is some output
>> on the screen -- but it is horribly slow.
>>
>> Glauber, Avi, is this a problem of latest qemu upstream changes to the
>> vga emulation or a merge issue?
>>   
> 
> It's caused by the recent merge; qemu upstream now has vga dirty bit
> tracking, done in a different way from kvm-userspace.git.
> 
> I've got it fixed here, just need to test a bit more.

That's good. If you want me to test as well, just throw something over.

Thanks,
Jan

PS: I was on latest kernel.git, Glauber.

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