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From: Simon Horman <>
To: Ian Campbell <>
Cc: Vivek Goyal <>,
	"Huang, Ying" <>,
	"Eric W. Biederman" <>,
	Andrew Morton <>,, Magnus Damm <>
Subject: Re: [PATCH -mm 1/2] kexec/i386: kexec page table code clean up - add arch_kimage
Date: Tue, 15 Jan 2008 10:34:10 +0900	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <1200317376.11020.9.camel@localhost.localdomain>

On Mon, Jan 14, 2008 at 01:29:36PM +0000, Ian Campbell wrote:
> On Thu, 2008-01-10 at 17:15 +0900, Simon Horman wrote: 
> > > Have you tested Xen too? Does it run into issues with this change?
> > 
> > Xen will need to be updated for this change but it shouldn't be a big
> > deal. Basically right now it calls __ma() (which is kind of like __pa())
> > on kexec_pgd and friends. Updating the arguments to __ma() to use
> > the new arch_kimage pointers should be easy enough.
> I think you mean the Xen specific parts of the kexec machinery in the
> kernel.c would need updating rather than the hypervisor, right?

Yes, that is right. Sorry for the confusion.

> I don't think these changes will cause anything more than minor problems
> for whoever ports the Xen kexec stuff upstream.
> > N.B: As this is Dom0 code (not DomU) it is maintained in the xen
> > repository and has been merged into Linux.
> I don't think we would bother backporting these changes to there, would
> we?

No, I was more thinking of the situation where Xen moves its kernel forwards.


      reply	other threads:[~2008-01-15  1:34 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-09  2:57 Huang, Ying
2008-01-10  1:14 ` Vivek Goyal
2008-01-10  2:06   ` Huang, Ying
2008-01-10  8:15   ` Simon Horman
2008-01-14 13:29     ` Ian Campbell
2008-01-15  1:34       ` Simon Horman [this message]

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