From patchwork Mon Sep 30 10:33:43 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xia, Hongyan" X-Patchwork-Id: 11166477 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 DFC9F13BD for ; Mon, 30 Sep 2019 10:37:25 +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 BC20920679 for ; Mon, 30 Sep 2019 10:37:25 +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="qkoqpzn2" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC20920679 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 1iEt2l-000238-Uo; Mon, 30 Sep 2019 10:36:39 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iEt2j-0001yx-WC for xen-devel@lists.xenproject.org; Mon, 30 Sep 2019 10:36:38 +0000 X-Inumbo-ID: 2a81acda-e36e-11e9-96cd-12813bfff9fa Received: from smtp-fw-9102.amazon.com (unknown [207.171.184.29]) by localhost (Halon) with ESMTPS id 2a81acda-e36e-11e9-96cd-12813bfff9fa; Mon, 30 Sep 2019 10:36:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1569839792; x=1601375792; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=asXLxl/75rRuYGnWov8wrMv8pQpcv+qWDkmA7y7z49A=; b=qkoqpzn2RVe/DeSZmypi84x/SUA7b2p8XfjOBJFMpNb1hy1E9zEtcV7L sk56tmmqdxnTwIITd/P6agCj7e6Fk8T0UvV4qJrQyrySJ/gRwgrvRqnN+ osurxdXL5aNKJ6DbVq3inuK/X+t42+fVKU5myiGbu/5V1WbSyII4ItimW 8=; X-IronPort-AV: E=Sophos;i="5.64,565,1559520000"; d="scan'208";a="705521395" Received: from sea3-co-svc-lb6-vlan3.sea.amazon.com (HELO email-inbound-relay-1d-f273de60.us-east-1.amazon.com) ([10.47.22.38]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP; 30 Sep 2019 10:35:15 +0000 Received: from EX13MTAUEA001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan2.iad.amazon.com [10.40.159.162]) by email-inbound-relay-1d-f273de60.us-east-1.amazon.com (Postfix) with ESMTPS id D5788A2EC5; Mon, 30 Sep 2019 10:34:58 +0000 (UTC) Received: from EX13D15UEE003.ant.amazon.com (10.43.62.19) by EX13MTAUEA001.ant.amazon.com (10.43.61.243) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Mon, 30 Sep 2019 10:34:38 +0000 Received: from EX13MTAUEE001.ant.amazon.com (10.43.62.200) by EX13D15UEE003.ant.amazon.com (10.43.62.19) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Mon, 30 Sep 2019 10:34:37 +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 10:34:37 +0000 From: Hongyan Xia To: Date: Mon, 30 Sep 2019 11:33:43 +0100 Message-ID: <0ecfa9b5e9410c2b1f4ebd3bb82f649e0ebde516.1569833766.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] [PATCH v2 51/55] x86/pv: properly map and unmap page table in dom0_construct_pv 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/pv/dom0_build.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/xen/arch/x86/pv/dom0_build.c b/xen/arch/x86/pv/dom0_build.c index d7d42568fb..39cb68f7da 100644 --- a/xen/arch/x86/pv/dom0_build.c +++ b/xen/arch/x86/pv/dom0_build.c @@ -679,6 +679,8 @@ int __init dom0_construct_pv(struct domain *d, if ( is_pv_32bit_domain(d) ) { + l2_pgentry_t *l2t; + /* Ensure the first four L3 entries are all populated. */ for ( i = 0, l3tab = l3start; i < 4; ++i, ++l3tab ) { @@ -693,7 +695,9 @@ int __init dom0_construct_pv(struct domain *d, l3e_get_page(*l3tab)->u.inuse.type_info |= PGT_pae_xen_l2; } - init_xen_pae_l2_slots(l3e_to_l2e(l3start[3]), d); + l2t = map_xen_pagetable_new(l3e_get_mfn(l3start[3])); + init_xen_pae_l2_slots(l2t, d); + UNMAP_XEN_PAGETABLE_NEW(l2t); } /* Pages that are part of page tables must be read only. */