From c6e2ae7ca034f7e1f5d01ef494b3de0ce3037d75 Mon Sep 17 00:00:00 2001 From: Dengcheng Zhu Date: Tue, 11 Sep 2018 14:49:20 -0700 Subject: MIPS: kexec: Mark CPU offline before disabling local IRQ [ Upstream commit dc57aaf95a516f70e2d527d8287a0332c481a226 ] After changing CPU online status, it will not be sent any IPIs such as in __flush_cache_all() on software coherency systems. Do this before disabling local IRQ. Signed-off-by: Dengcheng Zhu Signed-off-by: Paul Burton Patchwork: https://patchwork.linux-mips.org/patch/20571/ Cc: pburton@wavecomp.com Cc: ralf@linux-mips.org Cc: linux-mips@linux-mips.org Cc: rachel.mozes@intel.com Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- arch/mips/kernel/crash.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/mips/kernel/crash.c') diff --git a/arch/mips/kernel/crash.c b/arch/mips/kernel/crash.c index d455363d51c3..4c07a43a3242 100644 --- a/arch/mips/kernel/crash.c +++ b/arch/mips/kernel/crash.c @@ -36,6 +36,9 @@ static void crash_shutdown_secondary(void *passed_regs) if (!cpu_online(cpu)) return; + /* We won't be sent IPIs any more. */ + set_cpu_online(cpu, false); + local_irq_disable(); if (!cpumask_test_cpu(cpu, &cpus_in_crash)) crash_save_cpu(regs, cpu); -- cgit v1.2.3