Received: by 2002:a05:6a10:8c0a:0:0:0:0 with SMTP id go10csp1288316pxb; Thu, 4 Mar 2021 07:49:57 -0800 (PST) X-Google-Smtp-Source: ABdhPJyCHc3/d5O6zS0pxmimglKx2wmHqynOmt/IUPTDqIBRKDn5NBZx2cbpyFiZq/OSWq72OWJT X-Received: by 2002:a17:906:5902:: with SMTP id h2mr4912167ejq.416.1614872996810; Thu, 04 Mar 2021 07:49:56 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1614872996; cv=none; d=google.com; s=arc-20160816; b=za6G6SWnFfagiROMb06iH01OQZGXyQ0DCpXOrTomw9GQngdsPIZOAsKfFpttcELDLm vvmVqeqliETcYUVyCs2UCIs7j3XoO5ax9e44pbhlHMxbDi8dcVMYSN8NA0mcRiSELran xziS9fQsCA2ybX+rIQ6nZ8MgEEJDJe88FIVoPM59NPM0qBBvF8rDX4g5jw9xdWD/1gqQ gchp2fDqsf+ogcU6uiGYPOZ537klZjwOG9mJn3hsArjQL4s2H6PcMWbxKWSvBOy7KOB+ C+dxKaw9LEczrOyZuHE6HNfIPfgSkE8hyyNyNfM/WDBQqmSUObrE+ipUnNgt5SrDR1CD oF9A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:content-language :in-reply-to:mime-version:user-agent:date:message-id:from:references :cc:to:subject; bh=NaTmmYssfGM+AjFTvyUts54GbjpxXeitrTp4MIKEYM0=; b=E9W7EcSNkzFgfHqATUVSjOPQ4L/UZfnwkHOBGkTVgYLKIcDFGEkYMJZbnrEZGRTuHt sABYKn0GJ4qJIpwq0sdJPIoeVKzNrO39Ok/rzRno0BQOjPMsR3jaVLWXn2Ptlyjrl1vd pKSMbxZUM2RxdHhLKa6O+hEM9G3BI6+zDxntIQo8XatgdstmR4OCqp8o2lx/T5Y1SWZq 570jjxTBNQtGaAFGAKF+OAxs6wfHRCn1QBaIvgfqTP+KVAYTPv1ljdPwCtrxR2vXt1Ee FhE8BphgP6haSRV7j338GpF0zKhjZK1LfmAk8JSR6R0J0owps4OlI2Z8TTAhb/Q6GEeT ulHA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id z1si3342753edc.76.2021.03.04.07.49.32; Thu, 04 Mar 2021 07:49:56 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237105AbhCDJC4 (ORCPT + 99 others); Thu, 4 Mar 2021 04:02:56 -0500 Received: from foss.arm.com ([217.140.110.172]:35436 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237100AbhCDJCs (ORCPT ); Thu, 4 Mar 2021 04:02:48 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 7B6CD1FB; Thu, 4 Mar 2021 01:02:01 -0800 (PST) Received: from [10.57.17.29] (unknown [10.57.17.29]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 935153F73B; Thu, 4 Mar 2021 01:01:58 -0800 (PST) Subject: Re: [PATCH 1/8] ARM: ARMv7-M: Fix register restore corrupt after svc call To: dillon min Cc: Rob Herring , Maxime Coquelin , Alexandre Torgue , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , linux-stm32@st-md-mailman.stormreply.com, Linux ARM , Linux Kernel Mailing List , linux@armlinux.org.uk, afzal.mohd.ma@gmail.com References: <1614758717-18223-1-git-send-email-dillon.minfei@gmail.com> <1614758717-18223-2-git-send-email-dillon.minfei@gmail.com> <5284d390-c03a-4035-df5a-10d6cd60e47b@arm.com> <5efe3d44-8045-e376-003e-3ccbff54fb23@arm.com> From: Vladimir Murzin Message-ID: <703c43f1-7b83-32ec-7c50-baab00b6bb34@arm.com> Date: Thu, 4 Mar 2021 09:02:05 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/4/21 5:42 AM, dillon min wrote: > Okay, got it. after adding msp/psp switch code in RTOS, now the kernel > can be loaded normally > without any modification. Yay! > > So, just drop the changes in proc-v7m.S. Glad to see they are not strictly necessary :) Thanks Vladimir