From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeremy Fitzhardinge <jeremy@goop.org>
Subject: Re: Re: Paravirtualizing bits of acpi access
Date: Tue, 24 Mar 2009 17:45:32 -0700
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To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: "Brown, Len" <len.brown@intel.com>, Xen-devel <xen-devel@lists.xensource.com>, "Cihula,
	Joseph" <joseph.cihula@intel.com>, the arch/x86 maintainers <x86@kernel.org>, "Rafael J. Wysocki" <rjw@sisk.pl>, "linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>, Bjorn Helgaas <bjorn.helgaas@hp.com>
List-Id: linux-acpi@vger.kernel.org

Tian, Kevin wrote:
>> Though, come to think of it, perhaps there's no harm in letting the 
>> kernel do its own state-saving.  I'll check.
>>
>>     
>
> Well, I guess it's doable, since do_suspend_lowlevel also needs
> to restore processor context upon S3 failure (function return from
> acpi_enter_sleep_state instead of from wakeup stub). 

 From a quick look, it seems that all the instructions in the restore 
code are ones that Xen will trap and emulate; but with this kind of 
thing, its all in the testing...

    J