From patchwork Thu May 5 15:20:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 12839674 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A855DC433F5 for ; Thu, 5 May 2022 15:20:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380619AbiEEPYf (ORCPT ); Thu, 5 May 2022 11:24:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49372 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1381305AbiEEPYc (ORCPT ); Thu, 5 May 2022 11:24:32 -0400 Received: from us-smtp-delivery-74.mimecast.com (us-smtp-delivery-74.mimecast.com [170.10.129.74]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 757FD554A8 for ; Thu, 5 May 2022 08:20:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1651764051; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=NOhqwWJm0Xg7KJkj4jc2xm55/msX/E/vXJVK7yWqZr8=; b=XdaKNQb6kRSCw+LgFTD+pGBqcE0tA9DWWjGkiCi9rFJOxazaYUQ633FSRYtHNT5nZlkvYE pfzNPR7xw9EEozhEJw1bg83K3ia0Q4yA8oNRDT0LMBilq2kgRdIll77rv9kIvEib85TSW9 9TThnbLQMSZXW/F7GXSWNRmCdqM2uXE= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-195-htru64m9OTylFJ3NnKPgnQ-1; Thu, 05 May 2022 11:20:46 -0400 X-MC-Unique: htru64m9OTylFJ3NnKPgnQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id AF1A53C10229; Thu, 5 May 2022 15:20:40 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.192.251]) by smtp.corp.redhat.com (Postfix) with ESMTP id 032207B64; Thu, 5 May 2022 15:20:16 +0000 (UTC) From: Hans de Goede To: "Rafael J . Wysocki" , Mika Westerberg , =?utf-8?q?Krzysztof_Wilc?= =?utf-8?q?zy=C5=84ski?= , Bjorn Helgaas , Myron Stowe , Juha-Pekka Heikkila , Thomas Gleixner , Ingo Molnar , Borislav Petkov , "H . Peter Anvin" Cc: Hans de Goede , =?utf-8?q?Benoit_Gr=C3=A9goire?= , Hui Wang , linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v7 0/1] x86/PCI: Ignore E820 reservations for bridge windows on newer systems Date: Thu, 5 May 2022 17:20:15 +0200 Message-Id: <20220505152016.5059-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Hi All, Here is v7 of my patch to address the E820 reservations vs PCI host bridge ranges issue which are causing touchpad and/or thunderbolt issues on many different laptop models. After previous attemps to identify these systems by looking for E820 reservations covering the entire bridge window, which broke the boot on some coreboot based ChromeBooks we are now back to using a bios date based approach, now combined with DMI quirks for systems after the cutoff date which still report a wrong window from their _CRS method despite them being new(ish). This is based on top of Bjorn's pci/resource branch: https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git/log/?h=pci/resource Regards, Hans Hans de Goede (1): x86/PCI: Ignore E820 reservations for bridge windows on newer systems .../admin-guide/kernel-parameters.txt | 9 +++ arch/x86/include/asm/pci_x86.h | 2 + arch/x86/pci/acpi.c | 74 ++++++++++++++++++- arch/x86/pci/common.c | 6 ++ 4 files changed, 89 insertions(+), 2 deletions(-)