Re: [PATCH v3 01/20] arm64: remove redundant local_daif_mask() in bad_mode()
From: Marc Zyngier <maz@kernel.org>
Date: 2021-05-27 12:37:29
On Tue, 25 May 2021 19:32:43 +0100, Mark Rutland [off-list ref] wrote:
Upon taking an exception, the CPU sets all the DAIF bits. We never clear any of these bits prior to calling bad_mode(), and bad_mode() itself never clears any of these bits, so there's no need to call local_daif_mask(). This patch removes the redundant call. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Joey Gouly <joey.gouly@arm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: James Morse <james.morse@arm.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Will Deacon <will@kernel.org>
Acked-by: Marc Zyngier <maz@kernel.org> M. -- Without deviation from the norm, progress is not possible. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel