[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [edk2] Passing Xen memory map and resource map to OVMF
On Wed, Nov 13, 2013 at 08:03:39AM +0100, Gerd Hoffmann wrote: > Hi, > > > > The first thing that comes in mind is to reuse E820 table for memory map > > > plus some extra fields for io / mmio resources. But I guess UEFI is the > > > new world so stuffs like E820 from old world will be less popular. Any > > > suggestion on existing table / data structure I can use? > > What io/mmio ressources do you need to pass on? Say the ones for the emulated PCI cards or when PCI passthrough has been setup? > > > As far as I can see, qemu exports an fw_cfg table called "etc/e820". See > > qemu commit > > > > commit 7d67110f2d9a6a2d6b5215a948abc95d07258735 > > Author: Gerd Hoffmann <kraxel@xxxxxxxxxx> > > Date: Fri Oct 18 11:31:54 2013 +0200 > > > > pc: add etc/e820 fw_cfg file > > New in qemu 1.7 Was added exactly to deal with the 1TB limitation and > also to allow for non-contiguous memory (not implemented yet in qemu, > but if numa support is extended some day to support that we are fine > interface-wise). > > > Does this work when qemu is used in combination with Xen? > > It should, might need windup in the xen machine type though (not fully > sure how much code is shared between normal and xen machine types). > > cheers, > Gerd > > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxx > http://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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