[PATCH 1 of 1 v10] aarch64: Support PAC and BTI

Bill Roberts bill.roberts at foss.arm.com
Tue Sep 22 08:58:32 CEST 2026


On 9/18/26 3:14 PM, Torbjörn Granlund wrote:
> Niels Möller <nisse at lysator.liu.se> writes:
>
>    Question for Torbjörn: Which of the gmp machines (if any) would be
>    suitable for running tests?
>
> We do have a lot of arm64 capable systems, but they are for the period
> not powered on.  I can switch them on within a couple of days.
>
> Most systems are devboards with various cores, but then there is a an
> Apple M1 running Linux and an Apple M4 running Macos.

The m1 only supports one of the two, offhand I cant recall if it's PAC 
or BTI.
But you can check with something like this:
cat /proc/cpuinfo | grep -E -o "bti|pac" | sort | uniq

The m4 should support both, but you would want to run Linux on it too.

>
> I haven't followed these discussions so I am unaware of what hardware is
> required.
>


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