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linux/include/linux/randomize_kstack.h
Thomas Gleixner 0b9a305753 randomize_kstack: Provide add_random_kstack_offset_irqsoff() 
add_random_kstack_offset() uses get/put_cpu_var() which is pointless
overhead when it is invoked from low level entry code with interrupts
disabled.

Provide a irqsoff() variant, which avoids that.

Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Radu Rendec <radu@rendec.net>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>
Link: https://patch.msgid.link/20260707190253.768842729@kernel.org
2026-07-12 12:38:00 +02:00

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