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=2.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,UNWANTED_LANGUAGE_BODY,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id 7AF7CC433EF for ; Wed, 13 Jun 2018 01:07:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 38AEA208B2 for ; Wed, 13 Jun 2018 01:07:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 38AEA208B2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935272AbeFMBHF (ORCPT ); Tue, 12 Jun 2018 21:07:05 -0400 Received: from mga14.intel.com ([192.55.52.115]:64688 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754202AbeFMBBd (ORCPT ); Tue, 12 Jun 2018 21:01:33 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 12 Jun 2018 18:01:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,216,1526367600"; d="scan'208";a="47283458" Received: from voyager.sc.intel.com ([10.3.52.149]) by fmsmga008.fm.intel.com with ESMTP; 12 Jun 2018 18:01:30 -0700 From: Ricardo Neri To: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" Cc: Andi Kleen , Ashok Raj , Borislav Petkov , Tony Luck , "Ravi V. Shankar" , x86@kernel.org, sparclinux@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Ricardo Neri , Jacob Pan , Marc Zyngier , Bartosz Golaszewski , Doug Berger , Palmer Dabbelt , Randy Dunlap , iommu@lists.linux-foundation.org Subject: [RFC PATCH 02/23] genirq: Introduce IRQD_DELIVER_AS_NMI Date: Tue, 12 Jun 2018 17:57:22 -0700 Message-Id: <1528851463-21140-3-git-send-email-ricardo.neri-calderon@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1528851463-21140-1-git-send-email-ricardo.neri-calderon@linux.intel.com> References: <1528851463-21140-1-git-send-email-ricardo.neri-calderon@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Certain interrupt controllers (e.g., APIC) are capable of delivering interrupts to the CPU as non-maskable. Add the new IRQD_DELIVER_AS_NMI interrupt state flag. The purpose of this flag is to communicate to the underlying irqchip whether the interrupt must be delivered in this manner. Cc: Ashok Raj Cc: Andi Kleen Cc: Tony Luck Cc: Borislav Petkov Cc: Jacob Pan Cc: Marc Zyngier Cc: Bartosz Golaszewski Cc: Doug Berger Cc: Palmer Dabbelt Cc: Randy Dunlap Cc: "Ravi V. Shankar" Cc: x86@kernel.org Cc: iommu@lists.linux-foundation.org Signed-off-by: Ricardo Neri --- include/linux/irq.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/irq.h b/include/linux/irq.h index 65916a3..7271a2c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -208,6 +208,7 @@ struct irq_data { * IRQD_SINGLE_TARGET - IRQ allows only a single affinity target * IRQD_DEFAULT_TRIGGER_SET - Expected trigger already been set * IRQD_CAN_RESERVE - Can use reservation mode + * IRQD_DELIVER_AS_NMI - Deliver this interrupt as non-maskable */ enum { IRQD_TRIGGER_MASK = 0xf, @@ -230,6 +231,7 @@ enum { IRQD_SINGLE_TARGET = (1 << 24), IRQD_DEFAULT_TRIGGER_SET = (1 << 25), IRQD_CAN_RESERVE = (1 << 26), + IRQD_DELIVER_AS_NMI = (1 << 27), }; #define __irqd_to_state(d) ACCESS_PRIVATE((d)->common, state_use_accessors) @@ -389,6 +391,16 @@ static inline bool irqd_can_reserve(struct irq_data *d) return __irqd_to_state(d) & IRQD_CAN_RESERVE; } +static inline void irqd_set_deliver_as_nmi(struct irq_data *d) +{ + __irqd_to_state(d) |= IRQD_DELIVER_AS_NMI; +} + +static inline bool irqd_deliver_as_nmi(struct irq_data *d) +{ + return __irqd_to_state(d) & IRQD_DELIVER_AS_NMI; +} + #undef __irqd_to_state static inline irq_hw_number_t irqd_to_hwirq(struct irq_data *d) -- 2.7.4