From patchwork Thu Sep 26 09:46:15 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Xia, Hongyan" X-Patchwork-Id: 11162179 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 DDDE313B1 for ; Thu, 26 Sep 2019 09:51:12 +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 BA6C92053B for ; Thu, 26 Sep 2019 09:51:12 +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="ZY/XPyj0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BA6C92053B 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 1iDQPo-0008UV-NU; Thu, 26 Sep 2019 09:50:24 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1iDQPn-0008Qf-Ka for xen-devel@lists.xenproject.org; Thu, 26 Sep 2019 09:50:23 +0000 X-Inumbo-ID: 07d8e59e-e043-11e9-bf31-bc764e2007e4 Received: from smtp-fw-33001.amazon.com (unknown [207.171.190.10]) by localhost (Halon) with ESMTPS id 07d8e59e-e043-11e9-bf31-bc764e2007e4; Thu, 26 Sep 2019 09:50:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1569491412; x=1601027412; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=asXLxl/75rRuYGnWov8wrMv8pQpcv+qWDkmA7y7z49A=; b=ZY/XPyj0r5fQVD0e+idXQCGZJj/kibu/zgBf/v51jSP++9j/C0Pa8+N9 Zehp7q9L7sS+LVmRjJMoWjhr2RU/ZYNamkdkLSIW4NGzrL5uRTKgmUlqx mjTyztFIq9gbmSLLZwzJ6ho08zIszXtP5+VMS1+3JK4vVTsKaUMTedzr4 k=; X-IronPort-AV: E=Sophos;i="5.64,551,1559520000"; d="scan'208";a="836989007" Received: from sea3-co-svc-lb6-vlan2.sea.amazon.com (HELO email-inbound-relay-1e-17c49630.us-east-1.amazon.com) ([10.47.22.34]) by smtp-border-fw-out-33001.sea14.amazon.com with ESMTP; 26 Sep 2019 09:49:10 +0000 Received: from EX13MTAUWA001.ant.amazon.com (iad55-ws-svc-p15-lb9-vlan3.iad.amazon.com [10.40.159.166]) by email-inbound-relay-1e-17c49630.us-east-1.amazon.com (Postfix) with ESMTPS id 89D91A04EB; Thu, 26 Sep 2019 09:48:57 +0000 (UTC) Received: from EX13D32UWA001.ant.amazon.com (10.43.160.4) by EX13MTAUWA001.ant.amazon.com (10.43.160.58) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 26 Sep 2019 09:48:29 +0000 Received: from EX13MTAUWA001.ant.amazon.com (10.43.160.58) by EX13D32UWA001.ant.amazon.com (10.43.160.4) with Microsoft SMTP Server (TLS) id 15.0.1367.3; Thu, 26 Sep 2019 09:48:28 +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 09:48:27 +0000 From: To: Date: Thu, 26 Sep 2019 10:46:15 +0100 Message-ID: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: Bulk Subject: [Xen-devel] [RFC PATCH 52/84] 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 , 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/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. */