On Tue, Aug 6, 2019 at 7:13 PM Will Deacon [off-list ref] wrote:

On Wed, Jul 24, 2019 at 03:20:59PM +0100, Will Deacon wrote:

quoted

On Wed, Jul 24, 2019 at 04:16:49PM +0200, Andrey Konovalov wrote:

quoted

On Wed, Jul 24, 2019 at 4:02 PM Will Deacon [off-list ref] wrote:

quoted

On Tue, Jul 23, 2019 at 08:03:29PM +0200, Andrey Konovalov wrote:

quoted

Should this go through the mm or the arm tree?

I would certainly prefer to take at least the arm64 bits via the arm64 tree
(i.e. patches 1, 2 and 15). We also need a Documentation patch describing
the new ABI.

Sounds good! Should I post those patches together with the
Documentation patches from Vincenzo as a separate patchset?

Yes, please (although as you say below, we need a new version of those
patches from Vincenzo to address the feedback on v5). The other thing I
should say is that I'd be happy to queue the other patches in the series
too, but some of them are missing acks from the relevant maintainers (e.g.
the mm/ and fs/ changes).

Ok, I've queued patches 1, 2, and 15 on a stable branch here:

  https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=for-next/tbi

which should find its way into -next shortly via our for-next/core branch.
If you want to make changes, please send additional patches on top.

This is targetting 5.4, but I will drop it before the merge window if
we don't have both of the following in place:

  * Updated ABI documentation with Acks from Catalin and Kevin

Catalin has posted a new version today.

  * The other patches in the series either Acked (so I can pick them up)
    or queued via some other tree(s) for 5.4.

So we have the following patches in this series:

1. arm64: untag user pointers in access_ok and __uaccess_mask_ptr
2. arm64: Introduce prctl() options to control the tagged user addresses ABI
3. lib: untag user pointers in strn*_user
4. mm: untag user pointers passed to memory syscalls
5. mm: untag user pointers in mm/gup.c
6. mm: untag user pointers in get_vaddr_frames
7. fs/namespace: untag user pointers in copy_mount_options
8. userfaultfd: untag user pointers
9. drm/amdgpu: untag user pointers
10. drm/radeon: untag user pointers in radeon_gem_userptr_ioctl
11. IB/mlx4: untag user pointers in mlx4_get_umem_mr
12. media/v4l2-core: untag user pointers in videobuf_dma_contig_user_get
13. tee/shm: untag user pointers in tee_shm_register
14. vfio/type1: untag user pointers in vaddr_get_pfn
15. selftests, arm64: add a selftest for passing tagged pointers to kernel

1, 2 and 15 have been picked by Will.

11 has been picked up by Jason.

9, 10, 12, 13 and 14 have acks from their subsystem maintainers.

3 touches generic lib code, I'm not sure if there's a dedicated
maintainer for that.

The ones that are left are the mm ones: 4, 5, 6, 7 and 8.

Andrew, could you take a look and give your Acked-by or pick them up directly?

Make sense?

Cheers,

Will

Thanks!

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