linux-kernel - Re: [PATCH 6/10] lguest code: the little linux hypervisor.

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Message-ID: <20070209115758.GA18080@muc.de>
Date:	Fri, 9 Feb 2007 12:57:58 +0100
From:	Andi Kleen <ak@....de>
To:	Zachary Amsden <zach@...are.com>
Cc:	virtualization@...ts.osdl.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	Paul Mackerras <paulus@...ba.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Andrew Morton <akpm@...ux-foundation.org>,
	lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 6/10] lguest code: the little linux hypervisor.

On Fri, Feb 09, 2007 at 03:54:37AM -0800, Zachary Amsden wrote:
> Andi Kleen wrote:
> >>Yes, it is a bit, umm, innovative.  If it is going to be kept, even if 
> >>just for devel logging, you should disable interrupts around it.  
> >>Changing segments is not a normal thing to do.
> >>    
> >
> >Actually that wouldn't be needed because interrupts are not allowed to do 
> >any user accesses. And contrary to the name it doesn't actually change
> >the segment registers, only state used by *_user.
> >  
> 
> My bad, I fell for the same mistake as everyone.  Set_fs is just way too 

You could change the name. Only 654 occurrences all over the tree @)

> confusing of a name now.  But good to know interrupts must be disable in 
> such a circumstance.

+not

-Andi

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