On Mon, 19 Aug 2019 17:28:51 +0100 Will Deacon [off-list ref] wrote:

On Thu, Aug 15, 2019 at 04:43:59PM +0100, Catalin Marinas wrote:

quoted

There isn't a good reason to differentiate between the user address
space layout modification syscalls and the other memory
permission/attributes ones (e.g. mprotect, madvise) w.r.t. the tagged
address ABI. Untag the user addresses on entry to these functions.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---
 mm/mmap.c   | 5 +++++
 mm/mremap.c | 6 +-----
 2 files changed, 6 insertions(+), 5 deletions(-)

Acked-by: Will Deacon <will@kernel.org>

Andrew -- please can you pick this patch up? I'll take the rest of the
series via arm64 once we've finished discussing the wording details.

Sure, I grabbed the patch from the v9 series.

But please feel free to include this in the arm64 tree - I'll autodrop
my copy if this turns up in linux-next.


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