On Wed, Apr 11, 2012 at 09:51:49AM -0600, Alex Williamson wrote: > We've been adding new mappings, but not destroying old mappings. > This can lead to a page leak as pages are pinned using > get_user_pages, but only unpinned with put_page if they still > exist in the memslots list on vm shutdown. A memslot that is > destroyed while an iommu domain is enabled for the guest will > therefore result in an elevated page reference count that is > never cleared. > > Additionally, without this fix, the iommu is only programmed > with the first translation for a gpa. This can result in > peer-to-peer errors if a mapping is destroyed and replaced by a > new mapping at the same gpa as the iommu will still be pointing > to the original, pinned memory address. > > Signed-off-by: Alex Williamson <alex.williamson@xxxxxxxxxx> Applied, thanks. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
