From patchwork Thu Sep 26 09:45:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xia, Hongyan" X-Patchwork-Id: 11162087 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C302513BD for ; Thu, 26 Sep 2019 09:49:25 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9EF93222C0 for ; Thu, 26 Sep 2019 09:49:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=amazon.com header.i=@amazon.com header.b="Ni+VbyLh" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9EF93222C0 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=amazon.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iDQNj-0004Fy-KJ; Thu, 26 Sep 2019 09:48:15 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iDQNi-0004FJ-On for xen-devel@lists.xenproject.org; Thu, 26 Sep 2019 09:48:14 +0000 X-Inumbo-ID: c25651d2-e042-11e9-b588-bc764e2007e4 Received: from smtp-fw-4101.amazon.com (unknown [72.21.198.25]) by localhost (Halon) with ESMTPS id c25651d2-e042-11e9-b588-bc764e2007e4; Thu, 26 Sep 2019 09:48:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1569491294; x=1601027294; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=vtHVGWpmxN+XKXUpX4r1cfArkAPoliqMZ/3sDWi6CkU=; b=Ni+VbyLhhJkEkuCRJv+9OPqbNqPSiUdgpxnmacxwQVIy8yVnilFDNfzQ 4gnR4uMJmLJST3dZyzb+VnQmAByayTsQFzGqx0e0PwMysr9mXavVxl7+H pBcTS5bOh7M9nII64xNm6iNZup0xgwK4is3uo5y5TiWD77EcSX7/4CDyD c=; X-IronPort-AV: E=Sophos;i="5.64,551,1559520000"; d="scan'208";a="787535086" Received: from iad6-co-svc-p1-lb1-vlan3.amazon.com (HELO email-inbound-relay-1a-16acd5e0.us-east-1.amazon.com) ([10.124.125.6]) by smtp-border-fw-out-4101.iad4.amazon.com with ESMTP; 26 Sep 2019 09:48:13 +0000 Received: from EX13MTAUWA001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan2.iad.amazon.com [10.40.159.162]) by email-inbound-relay-1a-16acd5e0.us-east-1.amazon.com (Postfix) with ESMTPS id BF1FDA2D8F; Thu, 26 Sep 2019 09:48:11 +0000 (UTC) Received: from EX13D31UWA001.ant.amazon.com (10.43.160.57) by EX13MTAUWA001.ant.amazon.com (10.43.160.118) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 26 Sep 2019 09:47:40 +0000 Received: from EX13MTAUWA001.ant.amazon.com (10.43.160.58) by EX13D31UWA001.ant.amazon.com (10.43.160.57) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 26 Sep 2019 09:47:40 +0000 Received: from u9d785c4ba99158.ant.amazon.com (10.125.106.58) by mail-relay.amazon.com (10.43.160.118) with Microsoft SMTP Server id 15.0.1367.3 via Frontend Transport; Thu, 26 Sep 2019 09:47:38 +0000 From: To: Date: Thu, 26 Sep 2019 10:45:48 +0100 Message-ID: <3217dbfb7b277abc7de77067f38a2948cd1532cc.1569489002.git.hongyax@amazon.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: Bulk Subject: [Xen-devel] [RFC PATCH 25/84] x86_64/mm.c: remove code that serves no purpose in setup_m2p_table X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Andrew Cooper , Wei Liu , Wei Liu , Jan Beulich , =?utf-8?q?Roger_Pau_?= =?utf-8?q?Monn=C3=A9?= Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" From: Wei Liu Signed-off-by: Wei Liu --- xen/arch/x86/x86_64/mm.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/xen/arch/x86/x86_64/mm.c b/xen/arch/x86/x86_64/mm.c index 945ae123a6..9b39b2ffcb 100644 --- a/xen/arch/x86/x86_64/mm.c +++ b/xen/arch/x86/x86_64/mm.c @@ -480,8 +480,6 @@ static int setup_m2p_table(struct mem_hotadd_info *info) l2e_write(l2_ro_mpt, l2e_from_mfn(mfn, /*_PAGE_GLOBAL|*/_PAGE_PSE|_PAGE_USER|_PAGE_PRESENT)); } - if ( !((unsigned long)l2_ro_mpt & ~PAGE_MASK) ) - l2_ro_mpt = NULL; i += ( 1UL << (L2_PAGETABLE_SHIFT - 3)); } #undef CNT