[Crash-utility] Re: crash with Xen dom0 image from kdump
On Wed, Jun 14, 2006 at 10:46:45AM +0900, Simon Horman [Horms] wrote:
On Mon, Jun 12, 2006 at 01:41:07PM +0900, Kazuo Moriwaka wrote:
> Hi,
>
> I'm not clear about shadow mode; are vcpu->arch.shadow_table need for
> shadow-mode domains?
To be perfectly honest, I'm not clear about it either.
The code below probably does not cover shadow mode, but
it should be easy enough to fix, probably using vcpu->arch.shadow_table
as you suggest. I'll look into it some more.
After talking things over a little with Yamahata-san (who works on
xen-ia64), it seems that using vcpu->arch.guest_table is correct.
I guess we shall see.
I added some code to kdump to have it record CR3 for dom0. This is
done using a second note in the per-cpu notes area, which for now
just stores a single 4byte entity, the mfn of that CPU in dom0
if it was present in dom0.
I have made a dump available that includes this. The tarball
also includes the kernels, xen, symbol files, and patches to xen.
If you want to find the cr3 saving code its in ./arch/x86/crash.c
I plan to post this update to xen-devel shortly, hopefully tomorrow,
after upporting to the latest xen tree (I'm still working off about
3 weeks ago's tree).
http://packages.vergenet.net/tmp/xen-unstable.hg+kexec-20060616.tar.bz2
--
西門 宝曼 (サイモン・ホーマン) | Simon Horman (Horms)