From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 7/8] KVM: Optimize kvm_read_cr[04]_bits() Date: Sun, 07 Feb 2010 14:05:28 +0200 Message-ID: <4B6EAC88.7000306@redhat.com> References: <1264080712-3981-1-git-send-email-avi@redhat.com> <1264080712-3981-8-git-send-email-avi@redhat.com> <4B6BD63F.1000009@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Cc: Marcelo Tosatti , kvm@vger.kernel.org, Gleb Natapov To: Jan Kiszka Return-path: Received: from mx1.redhat.com ([209.132.183.28]:19766 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753826Ab0BGMFa (ORCPT ); Sun, 7 Feb 2010 07:05:30 -0500 In-Reply-To: <4B6BD63F.1000009@web.de> Sender: kvm-owner@vger.kernel.org List-ID: On 02/05/2010 10:26 AM, Jan Kiszka wrote: > Avi Kivity wrote: > >> 'mask' is always a constant, so we can check whether it includes a bit that >> might be owned by the guest very cheaply, and avoid the decache call. Saves >> a few hundred bytes of module text. >> > -no-kvm-irqchip -smp 2 is broken for my Linux guests since this commit. > Their user space applications receive #UD and things fall apart. > > Does 2c8232fc help? -- error compiling committee.c: too many arguments to function