Re: [kvm-devel] trivial Makefile patch + problem report

[Avi K. <av...@qu...>]

Roland Dreier wrote:
> 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.
>
>   

Applied, thanks.

> 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?
>
>   

You're using a Core (not 2) processor on a laptop, right?

There are two other reports about lost interrupts.  One of them (hi 
Christian) is a total lockup, the other is lost rtc interrupts like yours.

Does your machine like Xen?

I'll try to cook up an experimental patch to modify interrupt handling 
to be more like Xen's.


-- 
error compiling committee.c: too many arguments to function