Merge branch 'x86-bsp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...

[firefly-linux-kernel-4.4.55.git] / arch / x86 / kernel / smpboot.c

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index ef53e667e0517fea45cf43da492ca50e1552eced..c635663b20d9abb0a9557b6b9cc41c28d34c2200 100644 (file)
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -68,6 +68,8 @@
 #include <asm/mwait.h>
 #include <asm/apic.h>
 #include <asm/io_apic.h>
+#include <asm/i387.h>
+#include <asm/fpu-internal.h>
 #include <asm/setup.h>
 #include <asm/uv/uv.h>
 #include <linux/mc146818rtc.h>
@@ -903,6 +905,9 @@ int __cpuinit native_cpu_up(unsigned int cpu, struct task_struct *tidle)
 
        per_cpu(cpu_state, cpu) = CPU_UP_PREPARE;
 
+       /* the FPU context is blank, nobody can own it */
+       __cpu_disable_lazy_restore(cpu);
+
        err = do_boot_cpu(apicid, cpu, tidle);
        if (err) {
                pr_debug("do_boot_cpu failed %d\n", err);