Re: [Xen-devel] [PATCH] amd/iommu: remove hidden AMD inclusive mappings

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Roger Pau Monne [mailto:roger.pau@xxxxxxxxxx]
> Sent: Friday, September 21, 2018 11:21 PM
> 
> And just rely on arch_iommu_hwdom_init to setup the correct inclusive
> mappings as it's done for Intel.
> 
> AMD has code in amd_iommu_hwdom_init to setup inclusive mappings up
> to
> max_pdx, remove this since it's now a duplication of
> arch_iommu_hwdom_init. Note that AMD mapped every page with a valid
> mfn up to max_pdx, arch_iommu_hwdom_init will only do so for memory
> below 4GB, so this is a functional change for AMD.
> 
> Move the default setting of iommu_hwdom_{inclusive/reserved} to
> arch_iommu_hwdom_init since the defaults are now the same for both
> Intel and AMD.
> 
> Reported-by: Paul Durrant <paul.durrant@xxxxxxxxxx>
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
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