From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4513AC433E6 for ; Tue, 1 Sep 2020 11:26:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 10C66206EB for ; Tue, 1 Sep 2020 11:26:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726979AbgIAL0U (ORCPT ); Tue, 1 Sep 2020 07:26:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:40896 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726895AbgIALZ1 (ORCPT ); Tue, 1 Sep 2020 07:25:27 -0400 Received: from gaia (unknown [46.69.195.127]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2C0F1206FA; Tue, 1 Sep 2020 11:16:45 +0000 (UTC) Date: Tue, 1 Sep 2020 12:16:42 +0100 From: Catalin Marinas To: Marc Zyngier Cc: Andre Przywara , stable@vger.kernel.org, James Morse Subject: Re: [PATCH stable v5.4 1/3] KVM: arm64: Add kvm_extable for vaxoricism code Message-ID: <20200901111642.GI5561@gaia> References: <20200901094923.52486-1-andre.przywara@arm.com> <20200901094923.52486-2-andre.przywara@arm.com> <79d6944d383945608b685a2d0f9d9b2c@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <79d6944d383945608b685a2d0f9d9b2c@kernel.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On Tue, Sep 01, 2020 at 12:12:57PM +0100, Marc Zyngier wrote: > On 2020-09-01 10:49, Andre Przywara wrote: > > From: James Morse > > > > commit e9ee186bb735bfc17fa81dbc9aebf268aee5b41e upstream. > > > > KVM has a one instruction window where it will allow an SError exception > > to be consumed by the hypervisor without treating it as a hypervisor > > bug. > > This is used to consume asynchronous external abort that were caused by > > the guest. > > > > As we are about to add another location that survives unexpected > > exceptions, > > generalise this code to make it behave like the host's extable. > > > > KVM's version has to be mapped to EL2 to be accessible on nVHE systems. > > > > The SError vaxorcism code is a one instruction window, so has two > > entries > > in the extable. Because the KVM code is copied for VHE and nVHE, we end > > up > > with four entries, half of which correspond with code that isn't mapped. > > > > Cc: # 5.4.x > > Cc: Marc Zyngier > > Signed-off-by: James Morse > > Signed-off-by: Andre Przywara > > Can you make sure these patches do carry the sign-off chain as we have > in mainline? In particular, this is missing: > > Reviewed-by: Marc Zyngier > Signed-off-by: Catalin Marinas > > You can add your own SoB after this. Good point. James prepared the backports before we merged the patches into mainline. BTW, I also corrected a subject typo: s/vaxoricism/vaxorcism/ (not that this is a real word ;)). -- Catalin