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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30672C433F5 for ; Thu, 5 May 2022 23:58:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1387241AbiEFACh (ORCPT ); Thu, 5 May 2022 20:02:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1387106AbiEFABm (ORCPT ); Thu, 5 May 2022 20:01:42 -0400 Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7B3D60DAA for ; Thu, 5 May 2022 16:57:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651795073; x=1683331073; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=yu43tYTm3rL820NWGTlU5e3BSTdrJeh1cVn1o9Y1twQ=; b=XZulpZrOMMMKJxovH7naHeH3WcgDbT7/GBMVfNzwn4gIMqU3IpJ2Xfo9 LNTvFHm0tHHKR0dr/brMB7FC1utQB27pmtGUa/OeBBB1aqR761CvgCbuz QZTOETcWtvH31IqGcJvw1/t7EPq4G+57GqqTy6TwAQ6tiQdz79YxxkPg1 N97MX4odfxHaibHWYwbNU9wojq/S65Yy0h/7XnFHXJH+nV5qq7XTxW5SX 8hRinGyNVFw4FLetuyE96LxV4LppYtlKAZbPI+VcXpv4TPgSiM9RG1th5 RZz0N1SdLsNECXGUmigyNreqvPycb0HBsZMcgC9sao9LkU7gxmmKwe93H A==; X-IronPort-AV: E=McAfee;i="6400,9594,10338"; a="250283641" X-IronPort-AV: E=Sophos;i="5.91,203,1647327600"; d="scan'208";a="250283641" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2022 16:57:51 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.91,203,1647327600"; d="scan'208";a="694914383" Received: from ranerica-svr.sc.intel.com ([172.25.110.23]) by orsmga004.jf.intel.com with ESMTP; 05 May 2022 16:57:50 -0700 From: Ricardo Neri To: Thomas Gleixner , x86@kernel.org Cc: Tony Luck , Andi Kleen , Stephane Eranian , Andrew Morton , Joerg Roedel , Suravee Suthikulpanit , David Woodhouse , Lu Baolu , Nicholas Piggin , "Ravi V. Shankar" , Ricardo Neri , iommu@lists.linux-foundation.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Ricardo Neri Subject: [PATCH v6 16/29] x86/hpet: Prepare IRQ assignments to use the X86_ALLOC_AS_NMI flag Date: Thu, 5 May 2022 16:59:55 -0700 Message-Id: <20220506000008.30892-17-ricardo.neri-calderon@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220506000008.30892-1-ricardo.neri-calderon@linux.intel.com> References: <20220506000008.30892-1-ricardo.neri-calderon@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The flag X86_ALLOC_AS_NMI indicates that the IRQs to be allocated in an IRQ domain need to be configured as NMIs. Add an as_nmi argument to hpet_assign_irq(). Even though the HPET clock events do not need NMI IRQs, the HPET hardlockup detector does. A subsequent changeset will implement the reservation of a channel for it. Cc: Andi Kleen Cc: "Ravi V. Shankar" Cc: Stephane Eranian Cc: iommu@lists.linux-foundation.org Cc: linuxppc-dev@lists.ozlabs.org Cc: x86@kernel.org Suggested-by: Thomas Gleixner Reviewed-by: Tony Luck Signed-off-by: Ricardo Neri --- Changes since v5: * Introduced this patch. Changes since v4: * N/A Changes since v3: * N/A Changes since v2: * N/A Changes since v1: * N/A --- arch/x86/kernel/hpet.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 2c6713b40921..02d25e00e93f 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -618,7 +618,7 @@ static inline int hpet_dev_id(struct irq_domain *domain) } static int hpet_assign_irq(struct irq_domain *domain, struct hpet_channel *hc, - int dev_num) + int dev_num, bool as_nmi) { struct irq_alloc_info info; @@ -627,6 +627,8 @@ static int hpet_assign_irq(struct irq_domain *domain, struct hpet_channel *hc, info.data = hc; info.devid = hpet_dev_id(domain); info.hwirq = dev_num; + if (as_nmi) + info.flags |= X86_IRQ_ALLOC_AS_NMI; return irq_domain_alloc_irqs(domain, 1, NUMA_NO_NODE, &info); } @@ -755,7 +757,7 @@ static void __init hpet_select_clockevents(void) sprintf(hc->name, "hpet%d", i); - irq = hpet_assign_irq(hpet_domain, hc, hc->num); + irq = hpet_assign_irq(hpet_domain, hc, hc->num, false); if (irq <= 0) continue; -- 2.17.1