On Wed, May 27, 2020 at 10:17:37PM +0100, Dave Martin wrote:

Add documentation for the PR_PAC_RESET_KEYS ioctl added in Linux
5.0 for arm64.

[...]

+If the arguments are invalid,
+and in particular if
+.I arg2
+contains set bits that are unrecognized
+or that correspond to a key not available on this platform,
+the call fails with error
+.BR EINVAL .
+.IP
+.B Warning:
+Because the compiler or run-time environment
+may be using some or all of the keys,
+a successful
+.IP
+For more information, see the kernel source file
+.I Documentation/arm64/pointer\-authentication.rst
+.\"commit b693d0b372afb39432e1c49ad7b3454855bc6bed
+(or
+.I Documentation/arm64/pointer\-authentication.txt
+before Linux 5.3).
+.B PR_PAC_RESET_KEYS
+may crash the calling process.

I might be misreading this, but this looks like the kernel reference appears
mid-sentence. Regardless, I think we should drop the kernel doc reference,
as I mentioned on the SVE patches.

With that:

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

Will

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