[PATCH] arm64/fpsimd: signal: Clear TPIDR2 when delivering signals

[Mark Rutland]

On Thu, Apr 17, 2025 at 08:01:13PM +0100, Mark Rutland wrote:
> Hi Catalin, Will,
> 
> This patch fixes a pretty nasty ABI issue with SME. As noted below, Arm
> folk are working on updates to the relevant ABI specifications and
> libraries.

> Folk on CC are working on fixes for the remaining userspace issues,
> including updates/fixes to the AAPCS64 specification and glibc.

For reference, Richard Sandiford has posted the proposed AAPCS64
updates:

https://github.com/ARM-software/abi-aa/pull/325

Mark.