tree 2a689053024501123213af60f0dbd674e7d3e8d4
parent 91926d8b7e71aaf5f84f0cf208fc5a8b7a761050
author Christophe Leroy <christophe.leroy@csgroup.eu> 1661272595 +0200
committer Michael Ellerman <mpe@ellerman.id.au> 1661951127 +1000

powerpc: Fix hard_irq_disable() with sanitizer

As reported by Zhouyi Zhou, WRITE_ONCE() is not atomic
as expected when KASAN or KCSAN are compiled in.

Fix it by re-implementing it using inline assembly.

Fixes: 077fc62b2b66 ("powerpc/irq: remove inline assembly in hard_irq_disable macro")
Reported-by: Zhouyi Zhou <zhouzhouyi@gmail.com>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/a8298991b3df049a54ee8e558838e34265812014.1661272586.git.christophe.leroy@csgroup.eu