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 D515DC43334 for ; Tue, 7 Jun 2022 20:22:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1358928AbiFGUWF (ORCPT ); Tue, 7 Jun 2022 16:22:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58094 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355954AbiFGTbE (ORCPT ); Tue, 7 Jun 2022 15:31:04 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A431B1A44B3; Tue, 7 Jun 2022 11:12:07 -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 ams.source.kernel.org (Postfix) with ESMTPS id 7CF18B80B66; Tue, 7 Jun 2022 18:12:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ED6F5C385A2; Tue, 7 Jun 2022 18:12:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1654625524; bh=3I8H0PKM1ZKkpegr2SIeaLTg+u2o3waLBCs6UGZmtm8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CpcHqk/uDbnLkO8mOCOcbI+Cw/VPs7bf5HfwhYXK87Eo8mJaj9hV2U7MLKjpf5xAa ZPTDlqxHROntrlcV98bcD7OPscBlTdqinXGt9ZNC2dlLNggj3py6ptKxqgPLgnu6Wv +Z6ZvVHSKMApLg7lS+kOp1lM3ZIGLc25jmt/xH9Q= 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 5.17 050/772] iommu/vt-d: Add RPLS to quirk list to skip TE disabling Date: Tue, 7 Jun 2022 18:54:02 +0200 Message-Id: <20220607164950.513014568@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220607164948.980838585@linuxfoundation.org> References: <20220607164948.980838585@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 ab2273300346..e3f15e0cae34 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -5764,7 +5764,7 @@ 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