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authorYang Yingliang <yangyingliang@huawei.com>2018-06-22 10:52:51 +0100
committerThomas Gleixner <tglx@linutronix.de>2018-06-22 14:22:01 +0200
commitc1797b11a09c8323c92b074fd48b89a936c991d0 (patch)
treef4ed347b92bdaf64eecf8c7fb7c8d061cb002205 /fs/Kconfig.binfmt
parentcbaf45a6be497c272e80500e4fd9bccdf20d5050 (diff)
downloadlinux-c1797b11a09c8323c92b074fd48b89a936c991d0.tar.gz
irqchip/gic-v3-its: Don't bind LPI to unavailable NUMA node
On a NUMA system, if an ITS is local to an offline node, the ITS driver may pick an offline CPU to bind the LPI. In this case, pick an online CPU (and the first one will do). But on some systems, binding an LPI to non-local node CPU may cause deadlock (see Cavium erratum 23144). In this case, just fail the activate and return an error code. Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Sumit Garg <sumit.garg@linaro.org> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20180622095254.5906-5-marc.zyngier@arm.com
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