From patchwork Mon Mar 27 07:58:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Xin3" X-Patchwork-Id: 13188727 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 3EEECC761A6 for ; Mon, 27 Mar 2023 08:24:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232978AbjC0IYe (ORCPT ); Mon, 27 Mar 2023 04:24:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232019AbjC0IYc (ORCPT ); Mon, 27 Mar 2023 04:24:32 -0400 Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 614572D49; Mon, 27 Mar 2023 01:24:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1679905471; x=1711441471; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CJ5cn83oehVUqkHaIiQkGH139f3gJuf37y85qUnwXYY=; b=A183ZBs83JmI5q9u2KTkcLFnTZh6rMxQXmv4lqdI191STg61+j47pG4w BeAJzwjTgv3LqRmQ+MVncDc/CWWGIl0APK8SkWnZwo14lpo5whQZLjT80 2yEp3h1I2SoZeagDdws2/GirMKR2c9u2EV+KgqKxcrbCMmGsXFsjPXbWq 6mcyAg1OVNVRd8EY82pOAYkfXwODQXRHaCpZhRbqICx3pqJRIhSshw85r cAdelbU5t0QQjBZoN5aJpOxGu8L40oXVSpqGoyiNszqGuwpIxYXkK6hAH q/AHbYya9EL8tlbLm7NMzAD8Ee4+XlQWhkLU62wV6Of8YqoeulSYTq1Ay w==; X-IronPort-AV: E=McAfee;i="6600,9927,10661"; a="338930092" X-IronPort-AV: E=Sophos;i="5.98,294,1673942400"; d="scan'208";a="338930092" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Mar 2023 01:24:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10661"; a="713787027" X-IronPort-AV: E=Sophos;i="5.98,294,1673942400"; d="scan'208";a="713787027" Received: from unknown (HELO fred..) ([172.25.112.68]) by orsmga008.jf.intel.com with ESMTP; 27 Mar 2023 01:24:29 -0700 From: Xin Li To: linux-kernel@vger.kernel.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, peterz@infradead.org, andrew.cooper3@citrix.com, seanjc@google.com, pbonzini@redhat.com, ravi.v.shankar@intel.com, jiangshanlai@gmail.com, shan.kang@intel.com Subject: [PATCH v6 01/33] x86/traps: let common_interrupt() handle IRQ_MOVE_CLEANUP_VECTOR Date: Mon, 27 Mar 2023 00:58:06 -0700 Message-Id: <20230327075838.5403-2-xin3.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230327075838.5403-1-xin3.li@intel.com> References: <20230327075838.5403-1-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 spurious interrupt handling. Signed-off-by: H. Peter Anvin (Intel) Tested-by: Shan Kang 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();