From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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@lists.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 CD8AA211616BF for ; Tue, 2 Oct 2018 08:24:03 -0700 (PDT) Received: from smtp.corp.redhat.com (int-mx12.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id CBD8E30B96D4; Tue, 2 Oct 2018 15:24:02 +0000 (UTC) Received: from lacos-laptop-7.usersys.redhat.com (ovpn-123-140.rdu2.redhat.com [10.10.123.140]) by smtp.corp.redhat.com (Postfix) with ESMTP id AF34B607D9; Tue, 2 Oct 2018 15:23:57 +0000 (UTC) To: marcandre.lureau@redhat.com, edk2-devel@lists.01.org Cc: Jordan Justen , Ard Biesheuvel , Anthony Perard , Julien Grall , Michael Kinney References: <20181002121725.17178-1-marcandre.lureau@redhat.com> From: Laszlo Ersek Message-ID: <252339c6-44e7-f45c-56f2-bfbbbfb799c2@redhat.com> Date: Tue, 2 Oct 2018 17:23:56 +0200 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: <20181002121725.17178-1-marcandre.lureau@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.49]); Tue, 02 Oct 2018 15:24:03 +0000 (UTC) Subject: Re: [PATCH v3 1/1] OvmfPkg/PlatformPei: clear CPU caches X-BeenThere: edk2-devel@lists.01.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: EDK II Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Oct 2018 15:24:04 -0000 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit On 10/02/18 14:17, marcandre.lureau@redhat.com wrote: > From: Marc-André Lureau > > This is for conformance with the TCG "Platform Reset Attack Mitigation > Specification". Because clearing the CPU caches at boot doesn't impact > performance significantly, do it unconditionally, for simplicity's > sake. > > Flush the cache on all logical processors, thanks to > EFI_PEI_MP_SERVICES_PPI and CacheMaintenanceLib. > > Cc: Jordan Justen > Cc: Laszlo Ersek > Cc: Ard Biesheuvel > Cc: Anthony Perard > Cc: Julien Grall > Contributed-under: TianoCore Contribution Agreement 1.1 > Signed-off-by: Marc-André Lureau > Message-Id: <20181002120730.13013-1-marcandre.lureau@redhat.com> I'm going to remove the Message-Id line on push. I don't know why it's there, but either way, it's not correct. (The msgid of your posting is <20181002121725.17178-1-marcandre.lureau@redhat.com>.) With that: Reviewed-by: Laszlo Ersek Also, Regression-tested-by: Laszlo Ersek I'm ready to push this, but I'd still like to get an A-b from Mike (CC'd). Thanks! Laszlo