[PATCH v4 01/20] arm64: remove redundant local_daif_mask() in bad_mode()

[Mark Rutland]

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 at arm.com>
Acked-by: Marc Zyngier <maz at kernel.org>
Acked-by: Catalin Marinas <catalin.marinas at arm.com>
Reviewed-by: Joey Gouly <joey.gouly at arm.com>
Cc: James Morse <james.morse at arm.com>
Cc: Will Deacon <will at kernel.org>
---
 arch/arm64/kernel/traps.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c
index a05d34f0e82a..41f0aa92022a 100644
--- a/arch/arm64/kernel/traps.c
+++ b/arch/arm64/kernel/traps.c
@@ -765,7 +765,6 @@ asmlinkage void notrace bad_mode(struct pt_regs *regs, int reason, unsigned int
 		esr_get_class_string(esr));
 
 	__show_regs(regs);
-	local_daif_mask();
 	panic("bad mode");
 }
 
-- 
2.11.0