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Open Source and information security mailing list archives
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Message-ID: <1307460801.24181.51.camel@i7.infradead.org> Date: Tue, 07 Jun 2011 16:33:20 +0100 From: David Woodhouse <dwmw2@...radead.org> To: Chris Wright <chrisw@...s-sol.org> Cc: padmanabh ratnakar <pratnakarlx@...il.com>, Alex Williamson <alex.williamson@...hat.com>, iommu <iommu@...ts.linux-foundation.org>, linux-kernel@...r.kernel.org, kvm@...r.kernel.org Subject: Re: Seeing DMAR errors after multiple load/unload with SR-IOV On Tue, 2011-06-07 at 08:10 -0700, Chris Wright wrote: > * David Woodhouse (dwmw2@...radead.org) wrote: > > On Tue, 2011-06-07 at 06:38 -0700, Chris Wright wrote: > > > I think we still leak the list entry though. Bottom line is that we > > > need to handle hotplug ADD_DEVICE and DEL_DEVICE notifications. We > > > happen to pick up ADD_DEVICE by accident, but it's all pretty sloppy. > > > > Yeah, keeping a list of possible stale 'pci_dev' pointers is stupid. We > > should figure out the matching DMAR unit directly from the ACPI table at > > ADD_DEVICE time, and store it in pdev->archdata.iommu. > > > > I saw patches which were going in that direction... > > Cool, where are they? I'm working on something similar, and missed them. [PATCH] pci, dmar: Update dmar units devices list during hotplug Alex was working on it. -- dwmw2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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