Re: [PATCH v4 21/21] arm64: cpufeatures: Allow disabling of Pointer Auth from the command-line

From: Catalin Marinas
Date: Sat Jan 23 2021 - 09:29:21 EST

On Mon, Jan 18, 2021 at 09:45:33AM +0000, Marc Zyngier wrote:
> In order to be able to disable Pointer Authentication at runtime,
> whether it is for testing purposes, or to work around HW issues,
> let's add support for overriding the ID_AA64ISAR1_EL1.{GPI,GPA,API,APA}
> fields.
> This is further mapped on the arm64.nopauth command-line alias.
> Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>

Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>