On Sat, Apr 25, 2015 at 10:14:32PM +1000, Alexey Kardashevskiy wrote: > This is a pretty mechanical patch to make next patches simpler. > > New tce_iommu_unuse_page() helper does put_page() now but it might skip > that after the memory registering patch applied. > > As we are here, this removes unnecessary checks for a value returned > by pfn_to_page() as it cannot possibly return NULL. > > This moves tce_iommu_disable() later to let tce_iommu_clear() know if > the container has been enabled because if it has not been, then > put_page() must not be called on TCEs from the TCE table. This situation > is not yet possible but it will after KVM acceleration patchset is > applied. > > This changes code to work with physical addresses rather than linear > mapping addresses for better code readability. Following patches will > add an xchg() callback for an IOMMU table which will accept/return > physical addresses (unlike current tce_build()) which will eliminate > redundant conversions. > > Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> > [aw: for the vfio related changes] > Acked-by: Alex Williamson <alex.william...@redhat.com>
Reviewed-by: David Gibson <da...@gibson.dropbear.id.au>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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