From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <lersek@redhat.com>
Received-SPF: Pass (sender SPF authorized) identity=mailfrom;
 client-ip=209.132.183.28; helo=mx1.redhat.com; envelope-from=lersek@redhat.com;
 receiver=edk2-devel@ml01.01.org 
Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by ml01.01.org (Postfix) with ESMTPS id 50B22211B1120
 for <edk2-devel@ml01.01.org>; Tue, 22 Jan 2019 07:33:58 -0800 (PST)
Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com
 [10.5.11.13])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by mx1.redhat.com (Postfix) with ESMTPS id 5FA6DC0CBC06;
 Tue, 22 Jan 2019 15:33:57 +0000 (UTC)
Received: from lacos-laptop-7.usersys.redhat.com (ovpn-120-61.rdu2.redhat.com
 [10.10.120.61])
 by smtp.corp.redhat.com (Postfix) with ESMTP id 342D466084;
 Tue, 22 Jan 2019 15:33:53 +0000 (UTC)
From: Laszlo Ersek <lersek@redhat.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
 Leif Lindholm <leif.lindholm@linaro.org>, "Cohen, Eugene" <eugene@hp.com>
Cc: edk2-devel@ml01.01.org, tanxiaojun@huawei.com,
 Marc Zyngier <marc.zyngier@arm.com>,
 Christoffer Dall <christoffer.dall@arm.com>
References: <1449471969-16949-1-git-send-email-ard.biesheuvel@linaro.org>
 <f2c9c8cc-ab0c-f094-f921-aa207a730d1b@redhat.com>
Message-ID: <687b2470-f09c-289a-b768-8cfa923ad52d@redhat.com>
Date: Tue, 22 Jan 2019 16:33:53 +0100
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101
 Thunderbird/52.9.1
MIME-Version: 1.0
In-Reply-To: <f2c9c8cc-ab0c-f094-f921-aa207a730d1b@redhat.com>
X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16
 (mx1.redhat.com [10.5.110.31]); Tue, 22 Jan 2019 15:33:57 +0000 (UTC)
Subject: Re: [PATCH] ArmPkg: update InvalidateInstructionCacheRange to flush only to PoU
X-BeenThere: edk2-devel@lists.01.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: EDK II Development  <edk2-devel.lists.01.org>
List-Unsubscribe: <https://lists.01.org/mailman/options/edk2-devel>,
 <mailto:edk2-devel-request@lists.01.org?subject=unsubscribe>
List-Archive: <http://lists.01.org/pipermail/edk2-devel/>
List-Post: <mailto:edk2-devel@lists.01.org>
List-Help: <mailto:edk2-devel-request@lists.01.org?subject=help>
List-Subscribe: <https://lists.01.org/mailman/listinfo/edk2-devel>,
 <mailto:edk2-devel-request@lists.01.org?subject=subscribe>
X-List-Received-Date: Tue, 22 Jan 2019 15:33:58 -0000
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 7bit

On 01/22/19 16:09, Laszlo Ersek wrote:

> (I plan to undo commit cf580da1bc4c ("ArmPkg/ArmLib: don't invalidate
> entire I-cache on range operation", 2016-05-12) and commit b7de7e3cab3f
> ("ArmPkg: update InvalidateInstructionCacheRange to flush only to PoU",
> 2015-12-08), and to ask the reporter to reproduce the issue like that,
> but I figured I'd ask first.)

OK, I have to apologize, my lack of knowledge of aarch64 shows here. It
seems that the icache can only be invalidated to PoU (the ARM ARM only
lists IC IALLU / IALLUIS / IVAU), so undoing cf580da1bc4c should be useless.

Thanks,
Laszlo