| Date | Wed, 12 Jun 2019 11:38:49 +0100 | From | Catalin Marinas <> | Subject | Re: [PATCH v16 15/16] vfio/type1, arm64: untag user pointers in vaddr_get_pfn |
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On Mon, Jun 03, 2019 at 06:55:17PM +0200, Andrey Konovalov wrote: > This patch is a part of a series that extends arm64 kernel ABI to allow to > pass tagged user pointers (with the top byte set to something else other > than 0x00) as syscall arguments. > > vaddr_get_pfn() uses provided user pointers for vma lookups, which can > only by done with untagged pointers. > > Untag user pointers in this function. > > Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
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