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=-7.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 35E51C433E2 for ; Tue, 1 Sep 2020 11:22:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D0D75206C0 for ; Tue, 1 Sep 2020 11:22:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598959341; bh=TTxs8tSrVbbSHZCIwrDvaWeHyeLdiZ/y3vC2gDgCEOc=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=FEr9NL9LIQdibjArM5Ht9unis4+VV/rc+VU1xdboXweT9FHvMMjXiwaGLr/yXfcp0 u6vTStXlJInr2yFooupsFEn8+h5bg86AWZ1FCp//x9y1LM1IQj4PuBX3LJ6di2oRKe KYUNzi9oxyn7KFTKJgqK0BOUu1TawJWg82CCvNEs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726528AbgIALV4 (ORCPT ); Tue, 1 Sep 2020 07:21:56 -0400 Received: from mail.kernel.org ([198.145.29.99]:37534 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726355AbgIALUz (ORCPT ); Tue, 1 Sep 2020 07:20:55 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (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 B6601206C0; Tue, 1 Sep 2020 11:12:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598958778; bh=TTxs8tSrVbbSHZCIwrDvaWeHyeLdiZ/y3vC2gDgCEOc=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=s7r4LMvGNQOmiN+OjD4yT78EUYbM2/fBqb+F3KTtOt5hjYXxd9EkxjQluzCIMyDn1 ty4cFeXnLCnf258Wm0PruZGZNODZvpxp13cJlc4Z87WV1nkSRLNIXJrAyP75IA2LEO 2l0d9dioOdlPTs1xmuQKSYcTRKIqjxhO9D5dymYs= Received: from disco-boy.misterjones.org ([51.254.78.96] helo=www.loen.fr) by disco-boy.misterjones.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.92) (envelope-from ) id 1kD4Dh-008Fsx-5x; Tue, 01 Sep 2020 12:12:57 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Tue, 01 Sep 2020 12:12:57 +0100 From: Marc Zyngier To: Andre Przywara Cc: stable@vger.kernel.org, James Morse , Catalin Marinas Subject: Re: [PATCH stable v5.4 1/3] KVM: arm64: Add kvm_extable for vaxoricism code In-Reply-To: <20200901094923.52486-2-andre.przywara@arm.com> References: <20200901094923.52486-1-andre.przywara@arm.com> <20200901094923.52486-2-andre.przywara@arm.com> User-Agent: Roundcube Webmail/1.4.8 Message-ID: <79d6944d383945608b685a2d0f9d9b2c@kernel.org> X-Sender: maz@kernel.org X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: andre.przywara@arm.com, stable@vger.kernel.org, james.morse@arm.com, catalin.marinas@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Hi Andre, 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. Thanks, M. -- Jazz is not dead. It just smells funny...