From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EBE17C0650E for ; Wed, 3 Jul 2019 11:04:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CF90D218A5 for ; Wed, 3 Jul 2019 11:04:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727320AbfGCLE5 (ORCPT ); Wed, 3 Jul 2019 07:04:57 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:51660 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727117AbfGCLEO (ORCPT ); Wed, 3 Jul 2019 07:04:14 -0400 Received: from localhost ([127.0.0.1] helo=nanos.tec.linutronix.de) by Galois.linutronix.de with esmtp (Exim 4.80) (envelope-from ) id 1hid3c-0002ck-8x; Wed, 03 Jul 2019 13:04:12 +0200 Message-Id: <20190703105916.748980783@linutronix.de> User-Agent: quilt/0.65 Date: Wed, 03 Jul 2019 12:54:44 +0200 From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Nadav Amit , Ricardo Neri , Stephane Eranian , Feng Tang Subject: [patch 13/18] x86/apic: Add NMI_VECTOR wait to IPI shorthand References: <20190703105431.096822793@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To support NMI shorthand broadcasts add the safe wait for ICR idle for NMI vector delivery. Signed-off-by: Thomas Gleixner --- 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