tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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xtensa/cpu: Make sure cpu_die() doesn't return

cpu_die() doesn't return. Make that more explicit with a BUG().

BUG() is preferable to unreachable() because BUG() is a more explicit
failure mode and avoids undefined behavior like falling off the edge of
the function into whatever code happens to be next.

Link: https://lore.kernel.org/r/cca346b5c87693499e630291d78fb0bf12c24290.1676358308.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>

Josh Poimboeuf d08e12e8 eab89405

+2
+2
arch/xtensa/kernel/smp.c
··· 341 341 __asm__ __volatile__( 342 342 " movi a2, cpu_restart\n" 343 343 " jx a2\n"); 344 + 345 + BUG(); 344 346 } 345 347 346 348 #endif /* CONFIG_HOTPLUG_CPU */