[PATCH] arm64: mte: Fix PTRACE_{PEEK,POKE}MTETAGS error documentation

[Will Deacon]

On Mon, 07 Sep 2026 12:30:25 +0100, Catalin Marinas wrote:
> PTRACE_{PEEK,POKE}MTETAGS return -EIO rather than -EOPNOTSUPP (as
> documented) when no tags are copied from/to a mapping without PROT_MTE.
> This has been the behaviour since the interface was introduced, though
> the original intent was to distinguish between address not being
> accessible and mapped as untagged.
> 
> Update the documentation to match the implementation (de-facto ABI).
> Since -EOPNOTSUPP was never returned, change the error assignment to
> -EIO as well to avoid confusion.
> 
> [...]

Applied to arm64 (for-next/fixes), thanks!

[1/1] arm64: mte: Fix PTRACE_{PEEK,POKE}MTETAGS error documentation
      https://git.kernel.org/arm64/c/fdb9ebc7fb77

Cheers,
-- 
Will

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