linux-kernel - Re: [BUG] broken ebba638ae723d8a8fc2f7abce5ec18b688b791d7

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Message-ID: <3ba4a711-ac8b-46aa-b585-51c8b9881c8c@email.android.com>
Date:	Wed, 02 Feb 2011 18:35:44 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Jeremy Fitzhardinge <jeremy@...p.org>,
	Kees Cook <kees.cook@...onical.com>,
	matthieu castet <castet.matthieu@...e.fr>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [BUG] broken ebba638ae723d8a8fc2f7abce5ec18b688b791d7

Can we completely kill the "don't reload segments" flag, then?

"Rusty Russell" <rusty@...tcorp.com.au> wrote:

>On Thu, 3 Feb 2011 11:49:36 am Rusty Russell wrote:
>> On Thu, 3 Feb 2011 09:18:21 am H. Peter Anvin wrote:
>> > On 01/28/2011 08:58 AM, Jeremy Fitzhardinge wrote:
>> > > On 01/27/2011 07:38 PM, H. Peter Anvin wrote:
>> > >> [Adding Jeremy]
>> > >>
>> > >> Jeremy, would this break Xen?  As far as I know, Xen is the main
>user
>> > >> of skipping segment register initialization.
>> > > 
>> > > Xen doesn't go through head_*.S at all.
>> > > 
>> > 
>> > OK, I guess it's actually lguest which needs this feature?
>> 
>> Well, we already move __BOOT_DS into every other segment reg, so I
>don't think
>> %ss will break...
>> 
>> Checking...
>
>Fine here.
>
>Thanks,
>Rusty.
>PS.  In general, I don't want lguest to interfere with cleanups: I'd
>rather
>     fix up lguest as required until it gets too hard, then kill it.

-- 
Sent from my mobile phone.  Please pardon any lack of formatting.
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