From patchwork Tue Apr 4 10:26:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Xin3" X-Patchwork-Id: 13199581 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 4FE26C761AF for ; Tue, 4 Apr 2023 10:53:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234617AbjDDKxs (ORCPT ); Tue, 4 Apr 2023 06:53:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39424 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234744AbjDDKxE (ORCPT ); Tue, 4 Apr 2023 06:53:04 -0400 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6C5013ABA; Tue, 4 Apr 2023 03:53:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1680605582; x=1712141582; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=CJ5cn83oehVUqkHaIiQkGH139f3gJuf37y85qUnwXYY=; b=CZVKUa7dZ4/lC+B6wPEkeWU2q+GeZu8p1wSIm1pi1WJGKdUpZRn6L/xU cEe9PKrZGyQOmjAI85njfufcviXGkGHeh7kSHxp3e+wy2mk3y3KVTDx29 0mlJZhro+6PIlBeFg602qScn/hcnlWuq5ab0Q/blAZkkHL2ahmCjQqgBJ 7fXE2W3ucy0ASl/mtz+zEGrW1/PL5M43mXFHyGp+Qxa9Wa1LKc1G8Cjig lYnS8nmBYVgZUjb/0sHgJWWAd8hgaIcLYLv5c2CkfqPtOJy3s+WrfY3pn 6/NB/YR0GVR+e/T2KQeFTjn8UvfnSM0a6u3eBMWzSKILWVXuQJK4kOLfD w==; X-IronPort-AV: E=McAfee;i="6600,9927,10669"; a="330733922" X-IronPort-AV: E=Sophos;i="5.98,317,1673942400"; d="scan'208";a="330733922" Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Apr 2023 03:52:59 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10669"; a="775597778" X-IronPort-AV: E=Sophos;i="5.98,317,1673942400"; d="scan'208";a="775597778" Received: from unknown (HELO fred..) ([172.25.112.68]) by FMSMGA003.fm.intel.com with ESMTP; 04 Apr 2023 03:52:59 -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 v7 01/33] x86/traps: let common_interrupt() handle IRQ_MOVE_CLEANUP_VECTOR Date: Tue, 4 Apr 2023 03:26:44 -0700 Message-Id: <20230404102716.1795-2-xin3.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230404102716.1795-1-xin3.li@intel.com> References: <20230404102716.1795-1-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();