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Message-ID: <20201030171614.290266a8@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net> Date: Fri, 30 Oct 2020 17:16:14 -0700 From: Jakub Kicinski <kuba@...nel.org> To: Moritz Fischer <mdf@...nel.org> Cc: netdev@...r.kernel.org, davem@...emloft.net, linux-parisc@...r.kernel.org, linux-kernel@...r.kernel.org, lucyyan@...gle.com, moritzf@...gle.com, James.Bottomley@...senpartnership.com Subject: Re: [PATCH net-next v4] net: dec: tulip: de2104x: Add shutdown handler to stop NIC On Wed, 28 Oct 2020 10:21:25 -0700 Moritz Fischer wrote: > The driver does not implement a shutdown handler which leads to issues > when using kexec in certain scenarios. The NIC keeps on fetching > descriptors which gets flagged by the IOMMU with errors like this: > > DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000 > DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000 > DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000 > DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000 > DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000 > > Signed-off-by: Moritz Fischer <mdf@...nel.org> Applied, thanks!
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