[PATCH 4/5] arm64: rework FPAC exception handling

[Mark Brown]

On Tue, Jul 12, 2022 at 05:14:51PM +0100, Mark Rutland wrote:
> If an FPAC exception is taken from EL1, the entry code will call
> do_ptrauth_fault(), where due to:
> 
> 	BUG_ON(!user_mode(regs))

Reviewed-by: Mark Brown <broonie at kernel.org>
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