RE: [Xen-devel] X86_64 Xorg Xfree86 issues

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> At the moment Xorg does not work under Xen on X86-64. Havn't 
> had a chance to look into it...but even if you try the "vesa" 
> driver you cannot get X working. Basically the driver is not 
> able to get to the video card bios...may need a hypercall to do this.

Domain 0 should have the bottom 1MB of machine RAM mapped into its
address space, and it should be available via /dev/mem.

I think dmidecode uses read rather than mmap, which suggests ioremap may
not be working. See arch/xen/kernel/devmem.c

Ian

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