From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755243AbbAWLvP (ORCPT ); Fri, 23 Jan 2015 06:51:15 -0500 Received: from smtp.citrix.com ([66.165.176.89]:23545 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754972AbbAWLvM (ORCPT ); Fri, 23 Jan 2015 06:51:12 -0500 X-IronPort-AV: E=Sophos;i="5.09,453,1418083200"; d="scan'208";a="219966832" Message-ID: <54C235AD.5010202@citrix.com> Date: Fri, 23 Jan 2015 11:51:09 +0000 From: David Vrabel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.2.0 MIME-Version: 1.0 To: "Luis R. Rodriguez" , , , , CC: , "Luis R. Rodriguez" , , , , Subject: Re: [Xen-devel] [RFC v4 0/2] x86/xen: add xen hypercall preemption References: <1421972951-3940-1-git-send-email-mcgrof@do-not-panic.com> In-Reply-To: <1421972951-3940-1-git-send-email-mcgrof@do-not-panic.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-DLP: MIA2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 23/01/15 00:29, Luis R. Rodriguez wrote: > From: "Luis R. Rodriguez" > > This v4 addresses some of the cleanups recommended and adds > tracing option for when we do actually preempt a hypercall. > I kept the NOKPROBE_SYMBOL() for now but did remove the 'notrace' > stuff. > > This goes out as RFC still as I have not been able to test 32-bit. > Can anyone test that or at least confirm that the 32-bit point > we do the upcall is definitely not on the IRQ stack? You can omit fixing this for 32-bit guests (provided you note as such in the commit message). David