From patchwork Thu Aug 10 11:24:28 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juergen Gross X-Patchwork-Id: 9893309 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9FB7D60236 for ; Thu, 10 Aug 2017 11:26:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 93D8E28A1A for ; Thu, 10 Aug 2017 11:26:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 88BA428AE9; Thu, 10 Aug 2017 11:26:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4113128A1A for ; Thu, 10 Aug 2017 11:26:53 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dflZs-00005G-7h; Thu, 10 Aug 2017 11:24:36 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dflZr-000059-CX for xen-devel@lists.xenproject.org; Thu, 10 Aug 2017 11:24:35 +0000 Received: from [85.158.143.35] by server-9.bemta-6.messagelabs.com id 32/42-03406-2724C895; Thu, 10 Aug 2017 11:24:34 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrALMWRWlGSWpSXmKPExsVyuP0Ov26RU0+ kweq1Qhbft0xmcmD0OPzhCksAYxRrZl5SfkUCa8bqJduZC25zVCxoeMLewPicrYuRk0NCwEji 7cR/TF2MXBxCAgsZJeZ1/mQFSbAJqEpsuH4KzBYRUJK4t2oyUBEHB7NAocSzLzwgYWEBd4knV /8xgtgsQOU9s/4zg9i8AsYSO/9vYoKYLy/RcWAyC4jNKWAisXLCAbCRQkA1m459YJvAyL2AkW EVo3pxalFZapGupV5SUWZ6RkluYmaOrqGBmV5uanFxYnpqTmJSsV5yfu4mRqBvGYBgB+PdTQG HGCU5mJREeYs/dUcK8SXlp1RmJBZnxBeV5qQWH2KU4eBQkuA1c+yJFBIsSk1PrUjLzAEGGUxa goNHSYT3lANQmre4IDG3ODMdInWKUZfj1YT/35iEWPLy81KlxHlVQWYIgBRllObBjYAF/CVGW SlhXkago4R4ClKLcjNLUOVfMYpzMCoJ8z4CWcWTmVcCt+kV0BFMQEdE+HaCHFGSiJCSamDkZP /JG3PXxJGdfcHfi0IfZ0yaUJWo5pGiVV6s83BlvlCg5AeeRdu28Uw8wnmH546cfkV3eeH2w8q blHukdpq1yHq0rKv5eiEk8sxCwczP+in/gh9wT3ty4CVDnK9L+sqHOltl1t/xYo1PqnwTcfb7 q03zL0ecebGdn2Pd0qz1N3ukNjaHuwgosRRnJBpqMRcVJwIAlaKf83MCAAA= X-Env-Sender: jgross@suse.com X-Msg-Ref: server-12.tower-21.messagelabs.com!1502364274!77302798!1 X-Originating-IP: [195.135.220.15] X-SpamReason: No, hits=0.5 required=7.0 tests=BODY_RANDOM_LONG X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 16747 invoked from network); 10 Aug 2017 11:24:34 -0000 Received: from mx2.suse.de (HELO mx1.suse.de) (195.135.220.15) by server-12.tower-21.messagelabs.com with DHE-RSA-CAMELLIA256-SHA encrypted SMTP; 10 Aug 2017 11:24:34 -0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id A61C9AE59; Thu, 10 Aug 2017 11:24:33 +0000 (UTC) From: Juergen Gross To: xen-devel@lists.xenproject.org Date: Thu, 10 Aug 2017 13:24:28 +0200 Message-Id: <20170810112428.5769-2-jgross@suse.com> X-Mailer: git-send-email 2.12.3 In-Reply-To: <20170810112428.5769-1-jgross@suse.com> References: <20170810112428.5769-1-jgross@suse.com> Cc: Juergen Gross , andrew.cooper3@citrix.com, ian.jackson@eu.citrix.com, wei.liu2@citrix.com Subject: [Xen-devel] [PATCH] libxc: increase maximum migration stream record length X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Today the maximum record lenth in a migration stream is 8MB. This limits the size of a PV domain to a little bit less than 1TB in the migration case, as the P2M frame list will exceed 8MB in this case. Raising the record size limit by a factor of 16 allows for domain sizes of nearly 16TB to be migrated. This ought to be enough. Signed-off-by: Juergen Gross Acked-by: Ian Jackson --- tools/libxc/xc_sr_stream_format.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/tools/libxc/xc_sr_stream_format.h b/tools/libxc/xc_sr_stream_format.h index 3291b256fd..15ff1c7efb 100644 --- a/tools/libxc/xc_sr_stream_format.h +++ b/tools/libxc/xc_sr_stream_format.h @@ -57,8 +57,8 @@ struct xc_sr_rhdr /* All records must be aligned up to an 8 octet boundary */ #define REC_ALIGN_ORDER (3U) -/* Somewhat arbitrary - 8MB */ -#define REC_LENGTH_MAX (8U << 20) +/* Somewhat arbitrary - 128MB */ +#define REC_LENGTH_MAX (128U << 20) #define REC_TYPE_END 0x00000000U #define REC_TYPE_PAGE_DATA 0x00000001U