Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753788AbaB0Aiy (ORCPT ); Wed, 26 Feb 2014 19:38:54 -0500 Received: from mail-vc0-f181.google.com ([209.85.220.181]:52785 "EHLO mail-vc0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751929AbaB0Aiw (ORCPT ); Wed, 26 Feb 2014 19:38:52 -0500 MIME-Version: 1.0 In-Reply-To: <20140226104702.GA8961@mudshark.cambridge.arm.com> References: <1393410552-21497-1-git-send-email-marc.ceeeee@gmail.com> <1393410552-21497-6-git-send-email-marc.ceeeee@gmail.com> <20140226104702.GA8961@mudshark.cambridge.arm.com> From: Gregory Fong Date: Wed, 26 Feb 2014 16:38:20 -0800 Message-ID: Subject: Re: [PATCH v7 5/9] ARM: Enable erratum 798181 for Broadcom Brahma-B15 To: Will Deacon Cc: Marc Carino , Christian Daudt , Arnd Bergmann , Olof Johansson , Florian Fainelli , Matt Porter , Russell King , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "devicetree@vger.kernel.org" , "rob.herring@calxeda.com" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Will, On Wed, Feb 26, 2014 at 2:47 AM, Will Deacon wrote: > On Wed, Feb 26, 2014 at 10:29:08AM +0000, Marc Carino wrote: >> From: Gregory Fong >> >> Broadcom Brahma-B15 (r0p0..r0p2) is also affected by Cortex-A15 >> erratum 798181, so enable the workaround for Brahma-B15. > > Really... *exactly* the same erratum? That sounds pretty unlikely, so I'd > really like to be sure that the workaround we have indeed solves your > problem (issuing a dummy TLBI to 0x0 + dsb, then followed by a dmb + clrex > on each core). The point is that the workaround doesn't simply perform > non-shareable invalidation on each core using IPIs. Yes, it should be the same. I've sent you more detail off-list. Regards, Gregory -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/