From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: Subject: Re: [PATCH V7 08/11] drivers: acpi: Handle IOMMU lookup failure with deferred probing or error To: Lorenzo Pieralisi References: <93e79759-d614-9b36-d5ab-63e8eb725009@arm.com> <14751205-f034-7f0d-442a-854c3909425c@codeaurora.org> <5ba9f366d6e25397cdef8ad95b49e199@codeaurora.org> <175a3798-b824-ef1a-e112-9f6f472973ae@codeaurora.org> <20170130143851.GJ16461@arm.com> <1e048aff-0d77-b9f2-ebf8-2ba315b90ca7@codeaurora.org> <20170130165124.GA11712@red-moon> <20170201185230.GA1922@red-moon> From: Sinan Kaya Message-ID: Date: Wed, 1 Feb 2017 14:10:51 -0500 MIME-Version: 1.0 In-Reply-To: <20170201185230.GA1922@red-moon> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-msm@vger.kernel.org, Will Deacon , linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, bhelgaas@google.com, Sricharan R , Robin Murphy , Nate Watterson , Tomasz Nowicki Content-Type: text/plain; charset="us-ascii" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+bjorn=helgaas.com@lists.infradead.org List-ID: On 2/1/2017 1:52 PM, Lorenzo Pieralisi wrote: >> Sure, send it to both Nate and me. > I debugged the issue and Nate's fix is correct, the fact that you > can't it hit it with mainline is just a matter of timing because it has > to do with the CTX pointer value (we OR it with the existing value), so > it may work or not depending on how the cdptr memory allocation > pattern turns out to be (which explains why Nate and I can hit it with > simple PCI device remove/add execution too). > > So it is neither an ACPI nor an IOMMU probe deferral issue per-se, > fix is already queued, so it is all good. > > What about USB stalls ? > > Thanks ! > Lorenzo > I'll get a hold of Nate and debug this. We were waiting for you to send us debug code. -- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel