From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keir Fraser <keir.xen@gmail.com>
Subject: Re: fixed location of share info page in HVM guests
Date: Mon, 27 Aug 2012 19:10:34 +0100
Message-ID: <CC6176AA.3CEB4%keir.xen@gmail.com>
References: <20120827175504.GA13051@aepfle.de>
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To: Olaf Hering <olaf@aepfle.de>, xen-devel@lists.xen.org
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On 27/08/2012 18:55, "Olaf Hering" <olaf@aepfle.de> wrote:

> 
> Recently I tried to move the shared_info page in the pvops kernel during
> shutdown, see "xen PVonHVM: move shared_info to MMIO before kexec"
> patch. But this change was reverted because it caused reboot failures
> because the actual moving of the shared page is fragile.

How was it fragile? Moving it into MMIO should just work?

 -- Keir

> So my question is what can be done about it?
> Right now the shared_info page is in the middle of the RAM and will be
> overwritten during kexec because its area is not reserved.
> Can the toolstack help to provide a reserved page which can then be used
> by the kernel?
> 
> Olaf
> 
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