Alexey Kardashevskiy 6b5c19c552 powerpc/mmu: Add real mode support for IOMMU preregistered memory ... This makes mm_iommu_lookup() able to work in realmode by replacing list_for_each_entry_rcu() (which can do debug stuff which can fail in real mode) with list_for_each_entry_lockless(). This adds realmode version of mm_iommu_ua_to_hpa() which adds explicit vmalloc'd-to-linear address conversion. Unlike mm_iommu_ua_to_hpa(), mm_iommu_ua_to_hpa_rm() can fail. This changes mm_iommu_preregistered() to receive @mm as in real mode @current does not always have a correct pointer. This adds realmode version of mm_iommu_lookup() which receives @mm (for the same reason as for mm_iommu_preregistered()) and uses lockless version of list_for_each_entry_rcu(). Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-03-27 15:25:48 +11:00
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asm	powerpc/mmu: Add real mode support for IOMMU preregistered memory	2017-03-27 15:25:48 +11:00
uapi/asm	powerpc: Wire up statx() syscall	2017-03-16 20:45:53 +11:00