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Re: [Xen-devel] X under dom0



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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