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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] Remove physmap page upon granttab xfer
On 29/5/08 11:02, "Isaku Yamahata" <yamahata@xxxxxxxxxxxxx> wrote: >> After the grant transfer operation completes the page no longer belongs to >> the backend domain. Thus, for absolute safety and isolation, the page must >> be removed from the backend domain's IOMMU mappings before completion of the >> grant transfer operation. Actually we should be flushing host CPU TLBs too. > > Thank you for explanation. > The patch breaks ia64 granttab xfer breakage so that it have to be fixed. > However the operation is now obsoleted one, so I don't want to make > big effort to fix. > What do you think about the following patch? How does grant transfer work on ia64? Looking at netback I don't even see how the 'hole' left by transfer of the old page gets filled by mapping in a new page. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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