I'll give it a bit of thought. I suspect that it will be easy to
provide direct access to DOM0.
-- Keir
> Hi
>
> On Tue, 17 Aug 2004 18:56:48 +0100
> Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> wrote:
> > This bug should now be fixed.
>
> OK I've got a progress, but need little more help.
>
> The thing is, X requires MTRR support:-
> (please see the log below)
>
> I activated the MTRR support part at arch/xen/i386/Kconfig
> and recompile the dom0 kernel so CONFIG_MTRR=y should be
> built-in.
> (install/boot/config-2.6.7-xen0 does have the line CONFIG_MTRR=y).
> But /proc/mtrr does not appear after reboot.
>
> How can I activate MTRR support under ARCH=xen?
>
> Thanks very much for your patience.
>
> ===================== log =========================================
> * Xorg.log.0
> (II) Reloading /usr/X11R6/lib/modules/linux/libint10.a
> (II) I810(0): initializing int10
> (WW) I810(0): Bad V_BIOS checksum
> (II) I810(0): Primary V_BIOS segment is: 0xc000
> (WW) System lacks support for changing MTRRs
>
> * strace
> 7020 mmap2(NULL, 4096, PROT_READ, MAP_SHARED, 5, 0) = 0x402dd000
> 7020 munmap(0x402dd000, 4096) = 0
> 7020 close(5) = 0
> 7020 write(0, "(WW) I810(0): Bad V_BIOS checksu"..., 34) = 34
> 7020 write(0, "(II) I810(0): Primary V_BIOS seg"..., 48) = 48
> 7020 open("/dev/mem", O_RDWR) = 5
> 7020 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, 5, 0) = 0x402dd000
> 7020 close(5) = 0
> 7020 open("/dev/cpu/mtrr", O_WRONLY) = -1 ENOENT (No such file or
> directory)
> 7020 open("/proc/mtrr", O_WRONLY) = -1 ENOENT (No such file or
> directory)
> 7020 write(0, "(WW) System lacks support for ch"..., 45) = 45
> 7020 munmap(0x402dd000, 4096) = 0
> (snip)...
>
> Best regards,
> Daisaku Watanabe
>
>
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