From patchwork Fri Jan 6 08:55:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Xin3" X-Patchwork-Id: 13091146 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 9699DC5479D for ; Fri, 6 Jan 2023 09:20:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229568AbjAFJUm (ORCPT ); Fri, 6 Jan 2023 04:20:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43712 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232874AbjAFJUQ (ORCPT ); Fri, 6 Jan 2023 04:20:16 -0500 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 617476C7CA; Fri, 6 Jan 2023 01:20:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1672996814; x=1704532814; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=4bpIJXn+Cqwm7qv6s3tf9xXrKBIQ0tJR6b3uTXiGGZk=; b=QTEo743iicmhGW4VneJN0VoLOgX+MEQRZJfb5eLQx9tb5sxbFpLXdMpg OV64pwLcF/G/0usam1o91uXyNPU3md0JaeXjifycC/W2zNsKtG9Ken0KO J3o90y85BT0FlQXREgHbVME/Vqw8iAmkQdfDLJHReFtRLGlMl6HzzN/M9 BnPIInr+N90BgduB6QXKXuyuTWxMy16dSM0sfzljBf8zZ1FzxeQ4ZI7GP uuoj338h9kaCLHx6kY/n+2SV3GOnJKGA2V78PctCl/Eg4HE9Vn5be2HDG JdXVyvv1N4BrlGBBs8U8pfcKcAQS3EYYZNWdGlMUDlkr2y3Rx5AO0q10P Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10581"; a="322511378" X-IronPort-AV: E=Sophos;i="5.96,304,1665471600"; d="scan'208";a="322511378" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jan 2023 01:20:12 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6500,9779,10581"; a="719139337" X-IronPort-AV: E=Sophos;i="5.96,304,1665471600"; d="scan'208";a="719139337" Received: from unknown (HELO fred..) ([172.25.112.68]) by fmsmga008.fm.intel.com with ESMTP; 06 Jan 2023 01:20:10 -0800 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 Subject: [RFC PATCH v2 01/32] x86/traps: let common_interrupt() handle IRQ_MOVE_CLEANUP_VECTOR Date: Fri, 6 Jan 2023 00:55:46 -0800 Message-Id: <20230106085617.17248-2-xin3.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230106085617.17248-1-xin3.li@intel.com> References: <20230106085617.17248-1-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) 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();