From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B5352C433FF for ; Fri, 9 Aug 2019 15:39:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 92F83208C4 for ; Fri, 9 Aug 2019 15:39:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2436756AbfHIPje (ORCPT ); Fri, 9 Aug 2019 11:39:34 -0400 Received: from 8bytes.org ([81.169.241.247]:48598 "EHLO theia.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2436715AbfHIPje (ORCPT ); Fri, 9 Aug 2019 11:39:34 -0400 Received: by theia.8bytes.org (Postfix, from userid 1000) id F27853D0; Fri, 9 Aug 2019 17:39:32 +0200 (CEST) Date: Fri, 9 Aug 2019 17:39:31 +0200 From: Joerg Roedel To: Kai-Heng Feng Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] iommu/amd: Override wrong IVRS IOAPIC on Raven Ridge systems Message-ID: <20190809153931.GG12930@8bytes.org> References: <20190808101707.16783-1-kai.heng.feng@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190808101707.16783-1-kai.heng.feng@canonical.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Aug 08, 2019 at 06:17:07PM +0800, Kai-Heng Feng wrote: > Raven Ridge systems may have malfunction touchpad or hang at boot if > incorrect IVRS IOAPIC is provided by BIOS. > > Users already found correct "ivrs_ioapic=" values, let's put them inside > kernel to workaround buggy BIOS. Will that still work when a fixed BIOS for these laptops is released? Joerg