From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8C0EF5275BB; Wed, 23 Sep 2026 18:36:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790188621; cv=none; b=QO/E+CNNOmm4ORHqy6R1KmtVT3Ehhc/xcvs5EwC4WXCJKDagV8rawLBcUOy1xCd7VGSq7IHmufedwkq8fl6gHGxvErdqi4ubw1L+hL7Um/raJ7OIawKBrIkLa6csxvQEIpts2fL6qkCkQDXtkPMLgUYoLQtd0+PMNmN8TEaXWMI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790188621; c=relaxed/simple; bh=iqqLVc9blGv1Qq3c57RR93+vIn4LD801SVFpUDmD6QU=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=RSVV3A43hunxNY8Xs5npkuQzOGxvDf0tFT7TFmSJRSMJacQWsswLeGTJQ6scNN+6gttCi8zqk4XJZk3FB4ZtrCyv5s+QO6oUC2uiFlBZj4F/0kZUbgG97oH2A+X/qe43ytuv2notKjLdhmaa2NwKXyhgVv4yxxEK8D0tJes6qCQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=S7kNo577; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="S7kNo577" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B05071F000FF; Wed, 23 Sep 2026 18:36:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790188618; bh=nXGrpCjWB3LH4rhmz7QwyZ/fzqWae+WkDnbz0XMOTTQ=; h=Date:From:To:Cc:Subject:In-Reply-To; b=S7kNo577neF9p2zEZBd5fLjopB7AZg1Mq3PNHghIAP3pPmw/UYh7jrxTJI6LFSZJH 2WJsXeS/qpm/sY5Mig8vlVF4Z2CHP6F5GZ1e3sliD4bfq55DXAtvhjndZQyOlAQt/q MMCysBtN0l3mJ1EYI1OnBvIgctEWGAwozt23cJvBMZZpAnKN6eapIMO7mX02z96EZH gN2QE7Za2XzLUWe3I7oOK3gPvV0hoBTkeBVhNKz4hacIuJRv2rmC32UCDa5EkU9bAz 7Ygpn5kJXlKGadUIxMTWyNJ0Uk48RVDvZkQkql/ZHhKs6kpGLi4lASIxwTQNegTmcN F1s2k0obTFAdg== Date: Wed, 23 Sep 2026 13:36:57 -0500 From: Bjorn Helgaas To: Mario Limonciello Cc: Bjorn Helgaas , Damien Le Moal , Niklas Cassel , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , "H . Peter Anvin" , "open list:PCI SUBSYSTEM" , "open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , "open list:LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)" Subject: Re: [PATCH v2 0/2] Fix for storage corruption w/ AMD IOMMU on 64-bit addressing Message-ID: <20260923183657.GA1900695@bhelgaas> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260908190600.226485-1-mario.limonciello@amd.com> On Tue, Sep 08, 2026 at 02:05:58PM -0500, Mario Limonciello wrote: > An issue has been reported by a number of people that corruption > was occurring on storage for desktop systems. It's notably reported > on SATA, but the same issue also appears on NVME. > > At a glance it looks like an IOMMU issue as turning off the IOMMU helps > the issue, but it's actually a problem that occurs specifically with any > IOVA addressed >58 bits. > > This is because the BIOS on these systems is enabling a feature of the > root port called 'enhanced atomics' which repurposes those upper 5 bits > of address space. That feature should only be enabled by the BIOS when > the partner device supports it, but it's instead needlessly enabled on a > number of root ports. > > As some of these systems probably won't receive BIOS updates and there is > active reports of data corruption root caused to this add a quirk to > disable it on affected models, and also remove the quirk that was > introduced to work around this issue in drivers/ata. > > v2: > * Added resume fixups for the affected AMD PCIe ports > > Mario Limonciello (2): > x86/PCI: Disable enhanced atomics on some AMD PCIe ports > Revert "ata: ahci: force 32-bit DMA for JMicron JMB582/JMB585" > > arch/x86/pci/fixup.c | 99 ++++++++++++++++++++++++++++++++++++++++++++ > drivers/ata/ahci.c | 18 -------- > 2 files changed, 99 insertions(+), 18 deletions(-) Applied to pci/for-linus for v7.3, thanks!