From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [patch 13/26] Xen-paravirt_ops: Consistently wrap paravirt ops callsites to make them patchable Date: 20 Mar 2007 20:28:18 +0100 Message-ID: <20070320192818.GA87860@muc.de> References: <20070318120814.GA45869@muc.de> <1174272469.11680.23.camel@localhost.localdomain> <1174348905.11680.54.camel@localhost.localdomain> <45FF4043.4000805@vmware.com> <45FF770C.7050301@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Date: Tue, 20 Mar 2007 20:28:18 +0100 Content-Disposition: inline In-Reply-To: Sender: netdev-owner@vger.kernel.org To: Linus Torvalds Cc: "Eric W. Biederman" , Jeremy Fitzhardinge , Zachary Amsden , Rusty Russell , David Miller , mingo@elte.hu, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, virtualization@lists.osdl.org, xen-devel@lists.xensource.com, chrisw@sous-sol.org, anthony@codemonkey.ws, netdev@vger.kernel.org List-Id: virtualization@lists.linuxfoundation.org > But I was throwing that out as a long-term thing. I'm not claiming it's > trivial, but it should be doable. One thing I was pondering was to replace the expensive popfs with bt $IF,(%rsp) jnc 1f sti 1: But would be mostly a P4 optimization again and I'm not 100% sure it is worth it. -Andi