linux-kernel - Re: [PATCH] kexec/kdump implementation for Xen PV domU

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Message-ID: <20130729214419.GA4239@u109add4315675089e695.ant.amazon.com>
Date:	Mon, 29 Jul 2013 14:44:19 -0700
From:	Matt Wilson <msw@...zon.com>
To:	Daniel Kiper <dkiper@...-space.pl>
CC:	<gregkh@...uxfoundation.org>, <abyde@...nu.com>,
	<brandon@...p.org>, <ebiederm@...ssion.com>,
	<grzegorz.milos@...il.com>, <konrad.wilk@...cle.com>,
	<tim@...nu.com>, <linux-kernel@...r.kernel.org>,
	<virtualization@...ts.linux-foundation.org>,
	<xen-devel@...ts.xensource.com>, <kexec@...ts.infradead.org>,
	<daniel.kiper@...cle.com>
Subject: Re: [PATCH] kexec/kdump implementation for Xen PV domU

On Mon, Jul 29, 2013 at 07:15:43PM +0200, Daniel Kiper wrote:
> Hi all,
> 
> Here I am sending as attachments patches enabling kexec/kdump
> support in Xen PV domU. Only x84_64 architecture is supported.
> There is no support for i386 but some code could be easily reused.
> Here is a description of patches:

[...]

>   - kexec-kernel-only_20121203.patch: this patch fixes timer
>     issue on Amazon EC2 machines.

Hi Daniel,

Do you know the cause of this issue? Does it have something to do with
singleshot timer migration when offlining/onlining SMP CPUs?

--msw
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