Re: [Xen-devel] Need help with qemu args debug

[Fantu <fantonifabio@xxxxxxxxxx>]

Ian Campbell-10 wrote
> 
> On Thu, 2012-03-01 at 09:18 +0000, Fantu wrote:
>> Stefano Stabellini-3 wrote
>> > 
>> > Try adding videoram=32 to the VM config file, I think the issue is that
>> > the default videoram size for QXL is much larger (32MB) than the
>> default
>> > videoram size for Cirrus (8MB).
>> > 
>> 
>> Minimum setting of the ram was 16 mb, I applied this patch for decrese
>> minimum to 4 mb:
>> http://git.qemu.org/?p=qemu.git;a=commit;h=80105bbfb2aa3023e959b6ea682a3fc9515080a3
>> And retry with -global qxl-vga.vram_size=4194304 (4 MB) but give same
>> error
>> /var/log/xen/qemu-dm-PRECISEHVM.log
>> do_spice_init: starting 0.10.1
>> spice_server_add_interface: SPICE_INTERFACE_MIGRATION
>> spice_server_add_interface: SPICE_INTERFACE_KEYBOARD
>> spice_server_add_interface: SPICE_INTERFACE_MOUSE
>> qemu: hardware error: xen: failed to populate ram at 40000000
> 
> I think you'll need to dig into the qemu code and find out where/why
> this message is coming from.
> 
>> 
>> Tried to change minimum patch and setting to 3 MB but always same result,
>> probably samething to change about xen for support qxl graphic and
>> assignment of its ram?
>> I do not know how to fix or what else to try now :(
> 

I do other search about xen limit of video ram and found old patch about
limit of qemu video ram size, is probably something about...
http://xen.1045712.n5.nabble.com/PATCH-ioemu-drop-unused-4MB-video-memory-td2487287.html
I do search on new tree but not found for now on where is xen limit of video
ram allocation, someone can help me please?

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