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[35.185.200.132]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2dcffa9827dsm15047155ad.66.2026.09.09.14.52.01 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Sep 2026 14:52:01 -0700 (PDT) Date: Wed, 9 Sep 2026 21:51:58 +0000 From: David Matlack To: Alex Williamson Cc: Alex Williamson , kvm , linux-kernel , Jason Gunthorpe , Kevin Tian , Yi Liu Subject: Re: [PATCH 4/4] selftests/vfio: Extend timeout for runner executions Message-ID: References: <20260901215358.2421359-1-alex.williamson@nvidia.com> <20260901215358.2421359-5-alex.williamson@nvidia.com> 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: <20260901215358.2421359-5-alex.williamson@nvidia.com> On 2026-09-01 03:53 PM, Alex Williamson wrote: > When executed via the runner, ie. run_kselftest.sh, tests are subject > to a default 45s timeout. None of the igb, ioatdma, or nv_falcon > drivers can run the vfio_pci_driver_test within this window. > > The igb driver is the worst due to the device getting wedged from bad > DMAs in mix_and_match and requiring the full transaction pending > delay prior to FLR. > > This is even further exacerbated when the system implements > firmware-first error handling and the transaction pending scheduled > delays are preempted beyond expectations by SMIs. > > Worst case observed runtime for the whole vfio_pci_driver_test on > such a setup is 450s. Round up to 600s. > > Assisted-by: GPT-5.5 > Signed-off-by: Alex Williamson Reviewed-by: David Matlack