[PATCH 3/3] arm64: Unmask Debug + SError in do_notify_resume()

[Mark Brown]

On Tue, Feb 06, 2024 at 12:38:48PM +0000, Mark Rutland wrote:
> When returning to a user context, the arm64 entry code masks all DAIF
> exceptions before handling pending work in exit_to_user_mode_prepare()
> and do_notify_resume(), where it will transiently unmask all DAIF
> exceptions. This is a holdover from the old entry assembly, which
> conservatively masked all DAIF exceptions, and it's only necessary to
> mask interrupts at this point during the exception return path, so long
> as we subsequently mask all DAIF exceptions before the actual exception
> return.

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