Re: [Qemu-devel] [PATCH v3 2/4] switch stdvga to pci vgabios

[Avi Kivity]

On 11/03/2010 01:56 PM, Gerd Hoffmann wrote:
> Make stdvga provide the new vgabios binary (with pcibios support)
> using the PCI option rom bar.  Seabios will happily load it from
> there.  The new vga bios will also lookup the framebuffer address
> in pci config space, so the magic bochs lfb @ 0xe0000000 is not
> needed any more ->  zap it.
>
> Without the patch:
>
>    # dmesg | grep framebuffer
>    vesafb: framebuffer at 0xe0000000, mapped to 0xf7e80000, using 1875k, total 
> 8192k
>    # lspci -vs2
>    00:02.0 VGA compatible controller: Technical Corp. Device 1111 (prog-if 00 
> [VGA controller])
>         Subsystem: Qumranet, Inc. Device 1100
>         Physical Slot: 2
>         Flags: fast devsel
>         Memory at f0000000 (32-bit, prefetchable) [size=8M]
>         Expansion ROM at<unassigned>  [disabled]
>
> With patch applied:
>
>    # dmesg | grep framebuffer
>    vesafb: framebuffer at 0xf0000000, mapped to 0xf7e80000, using 1875k, total 
> 8192k
>    # lspci -vs2
>    00:02.0 VGA compatible controller: Technical Corp. Device 1111 (prog-if 00 
> [VGA controller])
>         Subsystem: Qumranet, Inc. Device 1100
>         Physical Slot: 2
>         Flags: fast devsel
>         Memory at f0000000 (32-bit, prefetchable) [size=8M]
>         Expansion ROM at f0800000 [disabled] [size=64K]

This is a guest visible change... does it need -M 0.13 support?  Will 
live migration from 0.13 to 0.14 work?

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