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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 26C10C433EF for ; Tue, 7 Jun 2022 17:26:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346542AbiFGR0o (ORCPT ); Tue, 7 Jun 2022 13:26:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45944 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346156AbiFGRWr (ORCPT ); Tue, 7 Jun 2022 13:22:47 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A3A0E106365; Tue, 7 Jun 2022 10:21:24 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 26FD46009B; Tue, 7 Jun 2022 17:21:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37128C385A5; Tue, 7 Jun 2022 17:21:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1654622483; bh=fsc6IIIk1awweZ+LPL499ZV/HHQ210t5VuqTymzmdZw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PsSbGpKHv9J9w+A7851IbebZsJwpVL9IwlsZmOJAYrx0kvCdu+Lq8Ce9De5ALRHqK Rqo/QfB2PTldUneLD9ZrGe0oz04yBsIQQ2OkGE+MJWE1plqFVZAhfLlTo5rkNSNIHh Mbi4FLHjtv88A5hNJFKVevM3CHMD2Kb6MZoFMIPs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Raviteja Goud Talla , Rodrigo Vivi , Lu Baolu , Tejas Upadhyay , Sasha Levin Subject: [PATCH 5.10 024/452] iommu/vt-d: Add RPLS to quirk list to skip TE disabling Date: Tue, 7 Jun 2022 18:58:01 +0200 Message-Id: <20220607164909.265970499@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220607164908.521895282@linuxfoundation.org> References: <20220607164908.521895282@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tejas Upadhyay [ Upstream commit 0a967f5bfd9134b89681cae58deb222e20840e76 ] The VT-d spec requires (10.4.4 Global Command Register, TE field) that: Hardware implementations supporting DMA draining must drain any in-flight DMA read/write requests queued within the Root-Complex before completing the translation enable command and reflecting the status of the command through the TES field in the Global Status register. Unfortunately, some integrated graphic devices fail to do so after some kind of power state transition. As the result, the system might stuck in iommu_disable_translati on(), waiting for the completion of TE transition. This adds RPLS to a quirk list for those devices and skips TE disabling if the qurik hits. Link: https://gitlab.freedesktop.org/drm/intel/-/issues/4898 Tested-by: Raviteja Goud Talla Cc: Rodrigo Vivi Acked-by: Lu Baolu Signed-off-by: Tejas Upadhyay Reviewed-by: Rodrigo Vivi Signed-off-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20220302043256.191529-1-tejaskumarx.surendrakumar.upadhyay@intel.com Signed-off-by: Sasha Levin --- drivers/iommu/intel/iommu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index 21749859ad45..477dde39823c 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -6296,7 +6296,7 @@ static void quirk_igfx_skip_te_disable(struct pci_dev *dev) ver = (dev->device >> 8) & 0xff; if (ver != 0x45 && ver != 0x46 && ver != 0x4c && ver != 0x4e && ver != 0x8a && ver != 0x98 && - ver != 0x9a) + ver != 0x9a && ver != 0xa7) return; if (risky_device(dev)) -- 2.35.1