From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from out3-smtp.messagingengine.com ([66.111.4.27]:43567 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753486AbeDTGzP (ORCPT ); Fri, 20 Apr 2018 02:55:15 -0400 Date: Fri, 20 Apr 2018 08:55:09 +0200 From: Greg KH To: Sinan Kaya Cc: stable@vger.kernel.org, Alex Williamson Subject: Re: Please apply commit cf0d53ba4947 and 523184972b28 to v4.4.y, v4.9.y, v4.14.y Message-ID: <20180420065509.GA4876@kroah.com> References: <3dc65572-74c2-4f09-1729-8957c5f36ac9@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3dc65572-74c2-4f09-1729-8957c5f36ac9@codeaurora.org> Sender: stable-owner@vger.kernel.org List-ID: On Thu, Apr 19, 2018 at 01:07:29PM -0400, Sinan Kaya wrote: > Hi Greg, > > Upstream commit cf0d53ba4947 ("vfio/pci: Virtualize Maximum Read Request > Size") and commit 523184972b28 ("vfio/pci: Virtualize Maximum Payload Size") > fixes nasty PCIe virtualization issues for platforms that support Maximum > Payload Size bigger than 128. > > Issue shows up when a device is assigned to the guest machine as a passthrough. > Guest machine configures the MPS/MRRS settings to values that are incompatible > with the parent bridge device. > > This causes PCIe transaction timeouts and AER errors to be spilled in the host > kernel. > > Please apply commit cf0d53ba4947 and 523184972b28 to all affected releases to > fix the resulting regression. The first patch does not apply to 4.4.y, and the second one does not apply anywhere :( Can you provide a series of backported patches that apply for me to queue up? thanks, greg k-h