Jan Beulich wrote:
>
> 1: x86/hvm: refine the judgment on IDENT_PT for EMT
> 2: x86/HVM: fix memory type merging in epte_get_entry_emt()
> 3: x86/HVM: consolidate passthrough handling in epte_get_entry_emt()
> 4: x86/HVM: use manifest constants / enumerators for memory types
> 5: x86/HVM: adjust data definitions in mtrr.c
>
> With this series in place (or actually the first three patches thereof,
> as the rest is cleanup), apart from the need to fully drop the
> dependency on HVM_PARAM_IDENT_PT (see the discussion started
> at 
> http://lists.xenproject.org/archives/html/xen-devel/2014-02/msg02150.html)
> the other main question is whether the dependency on iommu_snoop
> is really correct: I don't see why the IOMMU's snooping capability
> would affect the cachability of memory accesses - especially in the
> GPU passthrough case, RAM pages may need mapping as UC/WC
> if the GPU is permitted direct access to them - uniformly using WB
> here seems to be calling for problems.
>
> Signed-off-by: Jan Beulich<jbeulich@suse.com>


Acked-by: Keir Fraser <keir@xen.org>