From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [PATCH 6/10] lguest code: the little linux hypervisor. Date: 9 Feb 2007 12:57:58 +0100 Message-ID: <20070209115758.GA18080@muc.de> References: <1171012296.2718.26.camel@localhost.localdomain> <1171018812.2718.66.camel@localhost.localdomain> <45CC5771.1070309@vmware.com> <200702091250.06482.ak@muc.de> <45CC60FD.6080606@vmware.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Date: Fri, 9 Feb 2007 12:57:58 +0100 Content-Disposition: inline In-Reply-To: <45CC60FD.6080606@vmware.com> Sender: linux-kernel-owner@vger.kernel.org To: Zachary Amsden Cc: virtualization@lists.osdl.org, Rusty Russell , Paul Mackerras , Stephen Rothwell , Andrew Morton , lkml - Kernel Mailing List List-Id: virtualization@lists.linuxfoundation.org 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