[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: [Xen-ia64-devel][PATCH][VTD] small patches for VTD
The new one, Thanks, Anthony Isaku Yamahata wrote: > On Thu, Oct 23, 2008 at 10:31:20AM +0800, Xu, Anthony wrote: >> Iommu_un/map_page does nothing for PV domain. >> Why is there a race? > > Oh sorry. I'm not very familiar with iommu code (yet). > My understanding is > iommu_domain_init() is called unconditionaly by arch_domain_create() > so that platform_ops is initialized. > iommu_(un)map_page() checks iommu_enabled and whether platform_ops > is initialized. Thus iommu_(un)map_page() manipulates iommu page > table even for PV domain. > > Clearly I'm missing something important. Could you enlighten me? > > thanks, Attachment:
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