From patchwork Mon Sep 30 10:33:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xia, Hongyan" X-Patchwork-Id: 11166489 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 6C31513BD for ; Mon, 30 Sep 2019 10:37:45 +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 484C720679 for ; Mon, 30 Sep 2019 10:37:45 +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="ZuPYWDVX" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 484C720679 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 1iEt36-0002jg-JM; Mon, 30 Sep 2019 10:37:00 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iEt34-0002gC-Vd for xen-devel@lists.xenproject.org; Mon, 30 Sep 2019 10:36:59 +0000 X-Inumbo-ID: 222ed1aa-e36e-11e9-bf31-bc764e2007e4 Received: from smtp-fw-9102.amazon.com (unknown [207.171.184.29]) by localhost (Halon) with ESMTPS id 222ed1aa-e36e-11e9-bf31-bc764e2007e4; Mon, 30 Sep 2019 10:36:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1569839777; x=1601375777; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=FyGQD07umeQncTekgcbfUfStTJLGKuOPm9SHgfgoJt4=; b=ZuPYWDVXaayhIF5KcSxxB5S0jblUSDIcYHCyCeYHoW1Xj2EhzzlZxXSK BeMWaE/I7bhkTemyy51I0ZOGyLFmIhR9bhZSOFwufwUV0Jk44yr0uWthV imECHPLQ90OkUxMJLWY8YyOqCVRdtegupdUZZXjZcUR4Y92BeHsmYUYPF 0=; X-IronPort-AV: E=Sophos;i="5.64,565,1559520000"; d="scan'208";a="705521340" Received: from sea3-co-svc-lb6-vlan3.sea.amazon.com (HELO email-inbound-relay-1d-5dd976cd.us-east-1.amazon.com) ([10.47.22.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP; 30 Sep 2019 10:35:00 +0000 Received: from EX13MTAUEA001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1d-5dd976cd.us-east-1.amazon.com (Postfix) with ESMTPS id 47D7EA2249; Mon, 30 Sep 2019 10:34:43 +0000 (UTC) Received: from EX13D06UEE001.ant.amazon.com (10.43.62.79) by EX13MTAUEA001.ant.amazon.com (10.43.61.82) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Mon, 30 Sep 2019 10:34:14 +0000 Received: from EX13MTAUEE001.ant.amazon.com (10.43.62.200) by EX13D06UEE001.ant.amazon.com (10.43.62.79) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Mon, 30 Sep 2019 10:34:13 +0000 Received: from u9d785c4ba99158.ant.amazon.com (10.125.106.78) by mail-relay.amazon.com (10.43.62.226) with Microsoft SMTP Server id 15.0.1367.3 via Frontend Transport; Mon, 30 Sep 2019 10:34:13 +0000 From: Hongyan Xia To: Date: Mon, 30 Sep 2019 11:33:16 +0100 Message-ID: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: Bulk Subject: [Xen-devel] [PATCH v2 24/55] 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 , Jan Beulich , =?utf-8?q?Roger_Pau_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 c1daa04cf5..103932720b 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