Commit e5692bba authored by Breno Leitao's avatar Breno Leitao Committed by Will Deacon
Browse files

arm64: remove CONFIG_VMAP_STACK conditionals from traps overflow stack 



With VMAP_STACK now always enabled on arm64, remove the
CONFIG_VMAP_STACK checks from overflow stack definitions and related
code in arch/arm64/kernel/traps.c. The overflow_stack and
panic_bad_stack() logic are now unconditionally included, simplifying
the source and matching the mandatory stack model.

Signed-off-by: default avatarBreno Leitao <leitao@debian.org>
Acked-by: default avatarArd Biesheuvel <ardb@kernel.org>
Acked-by: default avatarMark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20250707-arm64_vmap-v1-5-8de98ca0f91c@debian.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent c4a5699d

arch/arm64/kernel/traps.c

+0 −3
Original line number Diff line number Diff line
@@ -894,8 +894,6 @@ void bad_el0_sync(struct pt_regs *regs, int reason, unsigned long esr) 
			      "Bad EL0 synchronous exception");

}



#ifdef CONFIG_VMAP_STACK



DEFINE_PER_CPU(unsigned long [OVERFLOW_STACK_SIZE/sizeof(long)], overflow_stack)

	__aligned(16);
@@ -927,7 +925,6 @@ void __noreturn panic_bad_stack(struct pt_regs *regs, unsigned long esr, unsigne 
	nmi_panic(NULL, "kernel stack overflow");

	cpu_park_loop();

}

#endif



void __noreturn arm64_serror_panic(struct pt_regs *regs, unsigned long esr)

{