[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v3 3/3] xen/arm: introduce XENFEAT_grant_map_identity
On 07/24/2014 03:43 PM, Jan Beulich wrote: >>>> On 24.07.14 at 16:10, <stefano.stabellini@xxxxxxxxxxxxx> wrote: >> On Thu, 24 Jul 2014, Jan Beulich wrote: >>>>>> On 24.07.14 at 15:31, <stefano.stabellini@xxxxxxxxxxxxx> wrote: >>>> --- a/xen/common/grant_table.c >>>> +++ b/xen/common/grant_table.c >>>> @@ -727,7 +727,7 @@ __gnttab_map_grant_ref( >>>> >>>> double_gt_lock(lgt, rgt); >>>> >>>> - if ( gnttab_need_iommu_mapping(ld) ) >>>> + if ( gnttab_need_iommu_mapping(ld) || >>>> gnttab_need_identity_mapping(ld) >> ) >>> >>> As before I think this change is pointless. >> >> I don't understand how you propose to solve the problem. > > I think ARM's gnttab_need_iommu_mapping() needs to just be > is_domain_direct_mapped() then. So ARM people will think we need an iommu to add the identity mapping. Why don't we rename gnttab_need_iommu_mapping into gnttab_need_identity_mapping? It would less confusing for both x86 and ARM. Regards, -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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