From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Olaf Hering <olaf@aepfle.de>
Cc: linux-kernel@vger.kernel.org,
Jeremy Fitzhardinge <jeremy@goop.org>,
xen-devel@lists.xensource.com
Subject: Re: [Xen-devel] [PATCH 0/3] [v4] kexec and kdump for Xen PVonHVM guests
Date: Tue, 9 Aug 2011 15:02:16 -0400 [thread overview]
Message-ID: <20110809190215.GA19789@dumpdata.com> (raw)
In-Reply-To: <20110804162053.723541930@aepfle.de>
On Thu, Aug 04, 2011 at 06:20:53PM +0200, Olaf Hering wrote:
>
>
> The following series implements kexec and kdump in a Xen PVonHVM guest.
>
> It is (should be) available via git:
>
> git://github.com/olafhering/linux.git xen-kexec-3.0
>
> The kexec or kdump kernel has to take care of already allocated virqs,
> PV devices in Closed or Connected state, and of registered watches in
> the old kernel. With the three patches these conditions are checked
> during boot of the new kernel rather than in the reboot/crash path.
>
> A fixed kexec-tools-2.0.2 package is required:
> http://lists.infradead.org/pipermail/kexec/2011-May/005026.html
> http://lists.infradead.org/pipermail/kexec/2011-August/005339.html
>
> Another fix is for xenstored, it has to accept the XS_INTRODUCE from a guest:
> http://lists.xensource.com/archives/html/xen-devel/2011-08/msg00007.html
>
> One open issue is the balloon driver. It removes pages from the guest
> and gives them back to the hypervisor. The kexec kernel is not aware of
> the fact that some pages are unavailable, and hangs or crashes.
> The workaround for the time being is:
>
> if test -f /sys/devices/system/xen_memory/xen_memory0/target -a \
> -f /sys/devices/system/xen_memory/xen_memory0/target_kb
> then
> cat /sys/devices/system/xen_memory/xen_memory0/target > \
> /sys/devices/system/xen_memory/xen_memory0/target_kb
> fi
> kexec -e
>
> This has to be resolved with another series of changes.
You are just plowing through these bugs and fixing. Thanks for doing it!
I think one more revision and they will be ready?
prev parent reply other threads:[~2011-08-09 19:02 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-04 16:20 [PATCH 0/3] [v4] kexec and kdump for Xen PVonHVM guests Olaf Hering
2011-08-04 16:20 ` [PATCH 1/3] xen/pv-on-hvm kexec: add xs_introduce to shutdown watches from old kernel Olaf Hering
2011-08-09 9:15 ` [Xen-devel] " Ian Campbell
2011-08-09 9:15 ` Ian Campbell
2011-08-09 9:28 ` [Xen-devel] " Olaf Hering
2011-08-04 16:20 ` [PATCH 2/3] xen/pv-on-hvm kexec: rebind virqs to existing eventchannel ports Olaf Hering
2011-08-09 9:17 ` [Xen-devel] " Ian Campbell
2011-08-09 9:29 ` Olaf Hering
2011-08-09 11:25 ` Ian Campbell
2011-08-09 15:28 ` Olaf Hering
2011-08-09 18:51 ` Konrad Rzeszutek Wilk
2011-08-04 16:20 ` [PATCH 3/3] xen/pv-on-hvm kexec+kdump: reset PV devices in kexec or crash kernel Olaf Hering
2011-08-09 9:23 ` [Xen-devel] " Ian Campbell
2011-08-09 9:44 ` Olaf Hering
2011-08-09 9:44 ` Olaf Hering
2011-08-09 11:26 ` [Xen-devel] " Ian Campbell
2011-08-09 19:02 ` Konrad Rzeszutek Wilk [this message]
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