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=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 DBC50C43461 for ; Fri, 11 Sep 2020 16:22:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 994E022204 for ; Fri, 11 Sep 2020 16:22:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="jGOWZRFH" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726627AbgIKQWJ (ORCPT ); Fri, 11 Sep 2020 12:22:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33968 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726496AbgIKP2P (ORCPT ); Fri, 11 Sep 2020 11:28:15 -0400 Received: from mail-pf1-x442.google.com (mail-pf1-x442.google.com [IPv6:2607:f8b0:4864:20::442]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A77ADC061796 for ; Fri, 11 Sep 2020 06:29:29 -0700 (PDT) Received: by mail-pf1-x442.google.com with SMTP id z19so7338029pfn.8 for ; Fri, 11 Sep 2020 06:29:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Borfb2c/AuKaxrPEvHGpc2ZkIkK0QqkS7G7OkbQVw6o=; b=jGOWZRFHUPusoZoYx87HUc0UdvWsBxz/6APZqblOC9XbCFv0ytJIfpKbUiqGR+qoBp OecjXlHzj+qtca8/4IwvdC6BImis+apETeuCYAtSsst/IzfSeJ9zBlJJOWLAZ8Q3b6pm yKHIP/rm3cGeLhNBMovZS3Ac8tjlfx5ca9yGhAwO+l3zo/53AazZkVt70xeUCA9FCju/ EGMp/NOXqs0btZS4XhRbtqqwXskqCdE6JBpojPgaA7D1Dyl9f8kzzekwPx3+YC8LIm61 J7tsBhGdMbL0TwkfjHVGE+2z6hAPvDArpTr24zfjOcqFOHryVEhD9n16KKxaEvvfXSfS 0BOw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Borfb2c/AuKaxrPEvHGpc2ZkIkK0QqkS7G7OkbQVw6o=; b=LBrFSCR6wE9+srAWXp5+kL4vITu/ADiJfg8KEq6mIi9LC3KF4Ufmdj75WnVbw0JKeC HO8dl3b49SsFYTSLa6pjZDJ84qmYoI4Uir5DA6tJnlC+YKWBq654lg7CkZJ6311Dmska xPz1bo8jbypSuClZEUS2L20jVXYxlhzbYQ5/gS9H9xBAmB97WTUZqKJXgbHFGjpYsjTU bpDCcRxIXbjXR8uwDfL/SR4/4/bZUWPr9vwYrnldRTPGAM5b/u9ynJhelXFujJ9pgQF1 rDcL5J0CkRY+OTMQao4t2BWFCu85DaOqaNT+WHFCeBK24qGebP9GYDF8O2GJUZyNaKkp DVlQ== X-Gm-Message-State: AOAM533VHPtqS7TS87KKxM0euIlQ+NcfY4Q9HflsAbXz2TieHK3yu9af VNtfXeAa7sz0nvbQD6oSWgk0oQ== X-Google-Smtp-Source: ABdhPJxr9ACTHLE1mqe3DgZIxSLIMmNQF1fyLmvRkWYTYL0CQRvGUt3F8c0z0XSGcO/b1SJoc8A1AA== X-Received: by 2002:a62:5244:: with SMTP id g65mr2133117pfb.132.1599830968549; Fri, 11 Sep 2020 06:29:28 -0700 (PDT) Received: from localhost.localdomain ([117.210.209.48]) by smtp.gmail.com with ESMTPSA id e10sm557988pgb.45.2020.09.11.06.29.22 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 11 Sep 2020 06:29:27 -0700 (PDT) From: Sumit Garg To: maz@kernel.org, catalin.marinas@arm.com, will@kernel.org Cc: linux-arm-kernel@lists.infradead.org, tglx@linutronix.de, jason@lakedaemon.net, mark.rutland@arm.com, julien.thierry.kdev@gmail.com, dianders@chromium.org, daniel.thompson@linaro.org, jason.wessel@windriver.com, kgdb-bugreport@lists.sourceforge.net, linux-kernel@vger.kernel.org, Sumit Garg Subject: [PATCH v4 3/5] arm64: smp: Allocate and setup IPI as NMI Date: Fri, 11 Sep 2020 18:58:42 +0530 Message-Id: <1599830924-13990-4-git-send-email-sumit.garg@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1599830924-13990-1-git-send-email-sumit.garg@linaro.org> References: <1599830924-13990-1-git-send-email-sumit.garg@linaro.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Allocate an unused IPI that can be turned as NMI using ipi_nmi framework. Also, invoke corresponding NMI setup/teardown APIs. Signed-off-by: Sumit Garg --- arch/arm64/kernel/smp.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index b6bde26..3f3b1ff 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #include #include @@ -962,6 +963,8 @@ static void ipi_setup(int cpu) for (i = 0; i < nr_ipi; i++) enable_percpu_irq(ipi_irq_base + i, 0); + + ipi_nmi_setup(cpu); } static void ipi_teardown(int cpu) @@ -973,6 +976,8 @@ static void ipi_teardown(int cpu) for (i = 0; i < nr_ipi; i++) disable_percpu_irq(ipi_irq_base + i); + + ipi_nmi_teardown(cpu); } void __init set_smp_ipi_range(int ipi_base, int n) @@ -993,6 +998,9 @@ void __init set_smp_ipi_range(int ipi_base, int n) irq_set_status_flags(ipi_base + i, IRQ_HIDDEN); } + if (n > nr_ipi) + set_smp_ipi_nmi(ipi_base + nr_ipi); + ipi_irq_base = ipi_base; /* Setup the boot CPU immediately */ -- 2.7.4