Messages in this thread | | | Date | Tue, 28 Feb 2012 14:15:15 -0800 | From | Chris Wright <> | Subject | Re: [Intel IOMMU PATCH] Re-evaluate RMRR info for devices removed from si domain |
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* Mingarelli, Thomas (Thomas.Mingarelli@hp.com) wrote: > This patch is being submitted to handle the case where a pci device is > placed into the si domain, when booting in iommu passthrough mode, then > removed. The RMRR information for such devices need to be re-processed > to avoid DMA Read errors due to the Present Bit being cleared in the > device's context entry.
What happens if that device is attached to a VM, then detached and rebound to a host driver? I suspect the reserved memory range won't get mapped properly for that device in that case.
thanks, -chris
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