From patchwork Wed Aug 16 12:52:16 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?SsO8cmdlbiBHcm/Dnw==?= X-Patchwork-Id: 9903701 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 17D6C6038C for ; Wed, 16 Aug 2017 12:55:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0A166289CD for ; Wed, 16 Aug 2017 12:55:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id F32E0289E2; Wed, 16 Aug 2017 12:55:09 +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 9F034289CD for ; Wed, 16 Aug 2017 12:55:09 +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 1dhxpL-000377-IL; Wed, 16 Aug 2017 12:53:39 +0000 Received: from mail6.bemta3.messagelabs.com ([195.245.230.39]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dhxpK-00033B-9v for xen-devel@lists.xenproject.org; Wed, 16 Aug 2017 12:53:38 +0000 Received: from [85.158.137.68] by server-4.bemta-3.messagelabs.com id A3/AC-04533-15044995; Wed, 16 Aug 2017 12:53:37 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrBLMWRWlGSWpSXmKPExsVyuP0Ov26gw5R Ig7+L2Cy+b5nM5MDocfjDFZYAxijWzLyk/IoE1owDhztYCt7yVZy7O4O9gfEwTxcjJ4eEgJHE 24n/mLoYuTiEBBYySvR2drKBJNgEVCU2XD/FCmKLCChJ3Fs1mQnEZhbIlZjd3gBmCwt4SXTf/ w1WzwJU/3vSIjCbV8BE4v21/6wQC+QlOg5MZgGxOYHikzccA7OFBIwltvc0sk9g5F7AyLCKUa M4tagstUjXyFQvqSgzPaMkNzEzR9fQwFgvN7W4ODE9NScxqVgvOT93EyPQv/UMDIw7GFtP+B1 ilORgUhLlDdKaEinEl5SfUpmRWJwRX1Sak1p8iFGGg0NJgrfPHignWJSanlqRlpkDDDSYtAQH j5IIbzNImre4IDG3ODMdInWK0Zhjw+r1X5g4Xk34/41JiCUvPy9VSpw3HKRUAKQ0ozQPbhAsA i4xykoJ8zIyMDAI8RSkFuVmlqDKv2IU52BUEoaYwpOZVwK37xXQKUxAp1xpnwRySkkiQkqqgb HGymjuoprcfU/Pt/jfC7qm8I/p7JTQqeU2qt8P6lssdUoqeLrg1hzpn6mSqqLcT89u4Ck5oKd yfk/fA/9FLBOb9rnuKT+9NOg+v9s63j0a/kf9DVLMtPfkn40MV3mh4DxxU/u1Tpn1Xa9Pmkkp 9sy0ilg9M/BMN6/Eqf9/l6VOvW+mJ1QsJKPEUpyRaKjFXFScCAD4VFpCewIAAA== X-Env-Sender: jgross@suse.com X-Msg-Ref: server-14.tower-31.messagelabs.com!1502888016!110102637!1 X-Originating-IP: [195.135.220.15] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 9.4.45; banners=-,-,- X-VirusChecked: Checked Received: (qmail 8615 invoked from network); 16 Aug 2017 12:53:37 -0000 Received: from mx2.suse.de (HELO mx1.suse.de) (195.135.220.15) by server-14.tower-31.messagelabs.com with DHE-RSA-CAMELLIA256-SHA encrypted SMTP; 16 Aug 2017 12:53:37 -0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id C5542AE71; Wed, 16 Aug 2017 12:52:36 +0000 (UTC) From: Juergen Gross To: xen-devel@lists.xenproject.org Date: Wed, 16 Aug 2017 14:52:16 +0200 Message-Id: <20170816125219.5255-50-jgross@suse.com> X-Mailer: git-send-email 2.12.3 In-Reply-To: <20170816125219.5255-1-jgross@suse.com> References: <20170816125219.5255-1-jgross@suse.com> Cc: Juergen Gross , Wei Liu , Ian Jackson Subject: [Xen-devel] [PATCH v3 49/52] libxc: add function to set hypervisor parameters 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 Add a new libxc function to set hypervisor parameters at runtime similar to boot time parameters via command line. Cc: Ian Jackson Cc: Wei Liu Signed-off-by: Juergen Gross Acked-by: Wei Liu --- V3: - zero padding fields in sysctl.u.set_parameter --- tools/libxc/include/xenctrl.h | 1 + tools/libxc/xc_misc.c | 21 +++++++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h index c7710b8f36..ad5e6b3d77 100644 --- a/tools/libxc/include/xenctrl.h +++ b/tools/libxc/include/xenctrl.h @@ -1210,6 +1210,7 @@ int xc_readconsolering(xc_interface *xch, int clear, int incremental, uint32_t *pindex); int xc_send_debug_keys(xc_interface *xch, char *keys); +int xc_set_parameters(xc_interface *xch, char *params); typedef xen_sysctl_physinfo_t xc_physinfo_t; typedef xen_sysctl_cputopo_t xc_cputopo_t; diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c index 2303293c6c..7e15e904e3 100644 --- a/tools/libxc/xc_misc.c +++ b/tools/libxc/xc_misc.c @@ -187,6 +187,27 @@ int xc_send_debug_keys(xc_interface *xch, char *keys) return ret; } +int xc_set_parameters(xc_interface *xch, char *params) +{ + int ret, len = strlen(params); + DECLARE_SYSCTL; + DECLARE_HYPERCALL_BOUNCE(params, len, XC_HYPERCALL_BUFFER_BOUNCE_IN); + + if ( xc_hypercall_bounce_pre(xch, params) ) + return -1; + + sysctl.cmd = XEN_SYSCTL_set_parameter; + set_xen_guest_handle(sysctl.u.set_parameter.params, params); + sysctl.u.set_parameter.size = len; + memset(sysctl.u.set_parameter.pad, 0, sizeof(sysctl.u.set_parameter.pad)); + + ret = do_sysctl(xch, &sysctl); + + xc_hypercall_bounce_post(xch, params); + + return ret; +} + int xc_physinfo(xc_interface *xch, xc_physinfo_t *put_info) {