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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E436FC433EF for ; Wed, 1 Jun 2022 15:26:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355426AbiFAP0j (ORCPT ); Wed, 1 Jun 2022 11:26:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355401AbiFAP0e (ORCPT ); Wed, 1 Jun 2022 11:26:34 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6CED49C2E3; Wed, 1 Jun 2022 08:26:33 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 21EE2B81AE1; Wed, 1 Jun 2022 15:26:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A678CC385B8; Wed, 1 Jun 2022 15:26:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1654097190; bh=+lhyoETMxQ8u9dpTirla7kouIoEKqFSNKpqd3SUO8vI=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=gWKhHwcVtjxU+xiAUHYPfFRk+fFgiKeKZ4p00Onisjo5Md4W1fcO7QFHQg7H5g8oc LCWxt//j3Hqcz7EhQARfjDgxfsMJwD35KRnQK09qWNo9SPhErYPqc1sQ8iKv4+0PHa AQNV00G4CIHiFeF1YK6Vx8DvnbuQuorpYLocjslCXl8em835vSWxw9LZK9P3PLM2bH SISfiG91au87kIGRaX19RQ9Izm+Zm1/1WX6z+0tugmIvGBr7D6RGk1xX0XX9Pc71wo VrpYrNtbBGXrMFf3/uQkquIt3eCCgS0JOW75oycP192eC22AbEa3Wa2uWL8Qt6VxiA Fr+vO9z9TPWVw== Received: from sofa.misterjones.org ([185.219.108.64] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nwQEu-00F1H5-5H; Wed, 01 Jun 2022 16:26:28 +0100 Date: Wed, 01 Jun 2022 16:26:27 +0100 Message-ID: <877d605rrw.wl-maz@kernel.org> From: Marc Zyngier To: Sasha Levin Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Joey Gouly , Catalin Marinas , will@kernel.org, broonie@kernel.org, alexandru.elisei@arm.com, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH AUTOSEL 5.18 15/49] arm64: Expand ESR_ELx_WFx_ISS_TI to match its ARMv8.7 definition In-Reply-To: <20220601135214.2002647-15-sashal@kernel.org> References: <20220601135214.2002647-1-sashal@kernel.org> <20220601135214.2002647-15-sashal@kernel.org> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: sashal@kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org, joey.gouly@arm.com, catalin.marinas@arm.com, will@kernel.org, broonie@kernel.org, alexandru.elisei@arm.com, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 01 Jun 2022 14:51:39 +0100, Sasha Levin wrote: > > From: Marc Zyngier > > [ Upstream commit 6a437208cb942a2dd98f7e1c3fd347ed3d425ffc ] > > Starting with FEAT_WFXT in ARMv8.7, the TI field in the ISS > that is reported on a WFx trap is expanded by one bit to > allow the description of WFET and WFIT. > > Special care is taken to exclude the WFxT bit from the mask > used to match WFI so that it also matches WFIT when trapped from > EL0. > > Reviewed-by: Joey Gouly > Signed-off-by: Marc Zyngier > Acked-by: Catalin Marinas > Link: https://lore.kernel.org/r/20220419182755.601427-2-maz@kernel.org > Signed-off-by: Sasha Levin Please do not backport this patch. It achieves nothing on its own, and the kernel isn't broken without it. Also, please do not AUTOSEL KVM/arm64 patches that are not tagged with a Cc stable. Thanks, M. -- Without deviation from the norm, progress is not possible.