On Mon, 2010-10-25 at 16:34 +0800, Andi Kleen wrote: > > On ia64 (which also uses ACPI), kmap_atomic_pfn() also requires > > a struct page. An ia64-specific version that doesn't need a struct > > page would be trivial, but I still don't know how to make it work on > > x86_64. > > Doing a struct page less kmap_atomic() shouldn't be too hard > on x86 either. > > Just to avoid problems with concurrency you likely need per > CPU mappings. One issue is PAT management, like in general ioremap implementation (reserve_memtype). Best Regards, Huang Ying -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
