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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Xen 4.0.0 first release candidate / graphics passthru
2010/1/21 Pasi Kärkkäinen <pasik@xxxxxx>: > On Thu, Jan 21, 2010 at 09:09:35AM +0000, Jean Guyader wrote: >> 2010/1/21 Pasi Kärkkäinen <pasik@xxxxxx>: >> > On Tue, Jan 12, 2010 at 10:05:12AM +0000, Keir Fraser wrote: >> >> On 12/01/2010 09:32, "Pasi Kärkkäinen" <pasik@xxxxxx> wrote: >> >> >> >> >>> Does 4.0 include gpu passthru features? If not are there any updated >> >> >>> patches to try gpu passthru with 4.x? >> >> >> >> >> >> There is support (c/s 20144). >> >> >> >> >> > >> >> > Btw is it possible now to specify a file to load the VGA bios from? >> >> > earlier it was required to hardcode it into some header file or so. >> >> >> >> I think it is hardcoded that qemu will take a copy of the host system's >> >> BIOS >> >> (i.e., for the primary host VGA). Other options would be easy to implement >> >> I'm sure, if someone's interested. >> >> >> > >> > I was just looking at same older mails, and it seems for example Teo En >> > Ming >> > and others who got Xen VGA passthrough working had to copy the >> > vgabios-pt.bin >> > to tools/firmware/vgabios/ before building Xen. >> > >> > That's not very practical.. >> > >> >> Right now the code copy the bios from 0xC0000. So if you want to pass through >> a secondary display adapter with the vga bios you are not copying the right >> one, >> that why this hack was for. >> Surely the code could be modified to add an option to copy the bios of >> the right card. >> > > Ok, thanks for the info. > > Do I remember correctly that there was a problem with copying the BIOS from > some cards, > or on some setups? And that's why the patch to load it from a file was made? > Yes, I think that was because of that, and I'm not sure about the intel IGD but I think that was causing some issue. The code could have a cleanup and use sysfs to get the rombios, if I works with the intel graphic card I think we should do that. Jean _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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