From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3zG1Zd1ZQRzF0bP for ; Tue, 9 Jan 2018 16:55:21 +1100 (AEDT) Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 258293DA07 for ; Tue, 9 Jan 2018 05:55:19 +0000 (UTC) Received: from washington.bos.jonmasters.org (ovpn-121-45.rdu2.redhat.com [10.10.121.45]) by smtp.corp.redhat.com (Postfix) with ESMTPS id B36C35D9CA for ; Tue, 9 Jan 2018 05:55:18 +0000 (UTC) Subject: Re: [PATCH 07/11] powerpc/64s: Add support for RFI flush of L1-D cache To: linuxppc-dev@lists.ozlabs.org References: <20180108165453.26066-1-mpe@ellerman.id.au> <20180108165453.26066-7-mpe@ellerman.id.au> From: Jon Masters Message-ID: Date: Tue, 9 Jan 2018 00:55:17 -0500 MIME-Version: 1.0 In-Reply-To: <20180108165453.26066-7-mpe@ellerman.id.au> Content-Type: text/plain; charset=windows-1252 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 01/08/2018 11:54 AM, Michael Ellerman wrote: > On some CPUs we can prevent the Meltdown vulnerability by flushing the > L1-D cache on exit from kernel to user mode, and from hypervisor to > guest. I've tested multiple iterations of these patches over the past few weeks, on both real hardware, and on a variety of emulation platforms. Tested-by: Jon Masters -- Computer Architect | Sent from my Fedora powered laptop