[patch V3 15/25] x86/apic: Add NMI_VECTOR wait to IPI shorthand

[Thomas Gleixner]

To support NMI shorthand broadcasts add the safe wait for ICR idle for NMI
vector delivery.

Signed-off-by: Thomas Gleixner <t...@linutronix.de>
---
 arch/x86/kernel/apic/ipi.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/arch/x86/kernel/apic/ipi.c
+++ b/arch/x86/kernel/apic/ipi.c
@@ -30,7 +30,10 @@ void __default_send_IPI_shortcut(unsigne
        /*
         * Wait for idle.
         */
-       __xapic_wait_icr_idle();
+       if (unlikely(vector == NMI_VECTOR))
+               safe_apic_wait_icr_idle();
+       else
+               __xapic_wait_icr_idle();
 
        /*
         * No need to touch the target chip field. Also the destination