[kvm-devel] trivial Makefile patch + problem report

[Roland D. <rd...@ci...>]

Hi, I've just installed kvm release 5 on systems with Intel Xeon 5160
processors, running up-to-date git kernels (2.6.19-rc6).

First, since I built my kernel with a separate object directory
("O=xxx"), I needed the patch below to the kernel module Kbuild file
to get things to work (otherwise the build wouldn't find
<linux/kvm.h>).  As Documentation/kbuild/makefiles.txt says:

    $(src)
	$(src) is a relative path which points to the directory
	where the Makefile is located. Always use $(src) when
	referring to files located in the src tree.

Second, some of the time when starting a guest, I see a flood of
messages like

rtc: lost some interrupts at 1024Hz.

flooding my kernel log, and almost always when that happens the system
becomes unresponsive (although occasionally I'm able to kill the qemu
process and restore the system).

Is there any debugging information or other way I can help fix this
issue?

Thanks,
  Roland


--- kvm-5/kernel/Kbuild	2006-11-27 05:56:08.000000000 -0800
+++ kvm-5.new/kernel/Kbuild	2006-11-28 13:13:21.000000000 -0800
@@ -1,4 +1,4 @@
-EXTRA_CFLAGS := -I$(PWD)/include
+EXTRA_CFLAGS := -I$(src)/include
 obj-m := kvm.o kvm-intel.o kvm-amd.o
 kvm-objs := kvm_main.o mmu.o x86_emulate.o debug.o
 kvm-intel-objs := vmx.o