From patchwork Thu Nov 10 05:53:42 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Xin3" X-Patchwork-Id: 13038296 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 A0009C433FE for ; Thu, 10 Nov 2022 06:17:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229449AbiKJGRV (ORCPT ); Thu, 10 Nov 2022 01:17:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38206 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232322AbiKJGRT (ORCPT ); Thu, 10 Nov 2022 01:17:19 -0500 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5929F2E9DF for ; Wed, 9 Nov 2022 22:17:19 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1668061039; x=1699597039; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=1ciQPXm/Sal2C1n/qXvgFnHDwndHE3vgyvJaW4yWXlY=; b=awmGiqt73j9r86OLxsWEXrhcECPwlSvSfDiLgK/GdLwy9JLQutYRWqaw eVmasfUHfMEafzOt0Ykzr1WtsAL5z9jtCWFCDO7SCt/ZfVp7a+pfL2v1s xMySIzxhIjqDNfJX4T7SjOk419XMdH3VVxeUCmmPjWjLl6AqOtGAWloRF mgBFGTmKKoM/vs+/L0eDZAO//B4O/DhErRNge4RKI0amB45DP0Kud0nHF OnOPOlY+SyT3o1rVpBvWwHmzhziRVaxy+2EhmOWGMaKVJwjsEKoX80ytM vc1g1cctMhgEG4dbBLy51Y+gcbxzvyNRYyr8DCG+amt5rh2cIt9TBYIwo g==; X-IronPort-AV: E=McAfee;i="6500,9779,10526"; a="311223523" X-IronPort-AV: E=Sophos;i="5.96,152,1665471600"; d="scan'208";a="311223523" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Nov 2022 22:17:17 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10526"; a="700667262" X-IronPort-AV: E=Sophos;i="5.96,152,1665471600"; d="scan'208";a="700667262" Received: from unknown (HELO fred..) ([172.25.112.68]) by fmsmga008.fm.intel.com with ESMTP; 09 Nov 2022 22:17:17 -0800 From: Xin Li To: linux-kernel@vger.kernnel.org, x86@kernel.org, kvm@vger.kernel.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, seanjc@google.com, pbonzini@redhat.com, kevin.tian@intel.com Subject: [PATCH 1/6] x86/traps: let common_interrupt() handle IRQ_MOVE_CLEANUP_VECTOR Date: Wed, 9 Nov 2022 21:53:42 -0800 Message-Id: <20221110055347.7463-2-xin3.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221110055347.7463-1-xin3.li@intel.com> References: <20221110055347.7463-1-xin3.li@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: "H. Peter Anvin (Intel)" IRQ_MOVE_CLEANUP_VECTOR is the only one of the system IRQ vectors that is *below* FIRST_SYSTEM_VECTOR. It is a slow path, so just push it into common_interrupt() just before the spurios interrupt handling. Signed-off-by: H. Peter Anvin (Intel) Signed-off-by: Xin Li --- arch/x86/kernel/irq.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 766ffe3ba313..7e125fff45ab 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -248,6 +248,10 @@ DEFINE_IDTENTRY_IRQ(common_interrupt) desc = __this_cpu_read(vector_irq[vector]); if (likely(!IS_ERR_OR_NULL(desc))) { handle_irq(desc, regs); +#ifdef CONFIG_SMP + } else if (vector == IRQ_MOVE_CLEANUP_VECTOR) { + sysvec_irq_move_cleanup(regs); +#endif } else { ack_APIC_irq();