Re: [PATCH v17 06/15] mm, arm64: untag user pointers in get_vaddr_frames

2019-06-20 Thread Khalid Aziz
On 6/12/19 5:43 AM, 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. > > get_vaddr_frames uses provided user pointers for vma lookups,

Re: [PATCH v17 06/15] mm, arm64: untag user pointers in get_vaddr_frames

2019-06-13 Thread Vincenzo Frascino
On 12/06/2019 12:43, 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. > > get_vaddr_frames uses provided user pointers for vma lookups,

[PATCH v17 06/15] mm, arm64: untag user pointers in get_vaddr_frames

2019-06-13 Thread Andrey Konovalov
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. get_vaddr_frames uses provided user pointers for vma lookups, which can only by done with untagged pointers. Instead