From patchwork Thu May 9 15:41:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vasilis LIaskovitis X-Patchwork-Id: 10937299 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9685B1390 for ; Thu, 9 May 2019 15:43:49 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 85A1B283C3 for ; Thu, 9 May 2019 15:43:49 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7995028B08; Thu, 9 May 2019 15:43:49 +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=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, 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 AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 29686283C3 for ; Thu, 9 May 2019 15:43:49 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hOlB3-0007eX-VA; Thu, 09 May 2019 15:41:45 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hOlB2-0007eD-HN for xen-devel@lists.xenproject.org; Thu, 09 May 2019 15:41:44 +0000 X-Inumbo-ID: f165be5c-7270-11e9-8980-bc764e045a96 Received: from smtp.nue.novell.com (unknown [195.135.221.5]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id f165be5c-7270-11e9-8980-bc764e045a96; Thu, 09 May 2019 15:41:43 +0000 (UTC) Received: from emea4-mta.ukb.novell.com ([10.120.13.87]) by smtp.nue.novell.com with ESMTP (TLS encrypted); Thu, 09 May 2019 17:41:41 +0200 Received: from linux-nq5u.suse.de (nwb-a10-snat.microfocus.com [10.120.13.202]) by emea4-mta.ukb.novell.com with ESMTP (NOT encrypted); Thu, 09 May 2019 16:41:33 +0100 From: Vasilis Liaskovitis To: xen-devel@lists.xenproject.org Date: Thu, 9 May 2019 17:41:26 +0200 Message-Id: <20190509154128.9196-3-vliaskovitis@suse.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190509154128.9196-1-vliaskovitis@suse.com> References: <20190509154128.9196-1-vliaskovitis@suse.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH v3 2/4] libxc: add function to get hypervisor parameters X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: jgross@suse.com, sstabellini@kernel.org, wei.liu2@citrix.com, vliaskovitis@suse.com, George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com, ian.jackson@eu.citrix.com, tim@xen.org, jbeulich@suse.com, dgdegra@tycho.nsa.gov Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add a new libxc function to get hypervisor parameters. Signed-off-by: Vasilis Liaskovitis --- tools/libxc/include/xenctrl.h | 1 + tools/libxc/xc_misc.c | 26 ++++++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/tools/libxc/include/xenctrl.h b/tools/libxc/include/xenctrl.h index a3628e56bb..3482ca1a91 100644 --- a/tools/libxc/include/xenctrl.h +++ b/tools/libxc/include/xenctrl.h @@ -1228,6 +1228,7 @@ int xc_readconsolering(xc_interface *xch, int xc_send_debug_keys(xc_interface *xch, char *keys); int xc_set_parameters(xc_interface *xch, char *params); +int xc_get_parameters(xc_interface *xch, char *params, char *values); typedef struct xen_sysctl_physinfo xc_physinfo_t; typedef struct xen_sysctl_cputopo xc_cputopo_t; diff --git a/tools/libxc/xc_misc.c b/tools/libxc/xc_misc.c index 5e6714ae2b..439ad91194 100644 --- a/tools/libxc/xc_misc.c +++ b/tools/libxc/xc_misc.c @@ -208,6 +208,32 @@ int xc_set_parameters(xc_interface *xch, char *params) return ret; } +int xc_get_parameters(xc_interface *xch, char *params, char *values) +{ + int ret, len = strlen(params); + DECLARE_SYSCTL; + DECLARE_HYPERCALL_BOUNCE(params, len, XC_HYPERCALL_BUFFER_BOUNCE_IN); + DECLARE_HYPERCALL_BOUNCE(values, 1023, XC_HYPERCALL_BUFFER_BOUNCE_OUT); + + if ( xc_hypercall_bounce_pre(xch, params) ) + return -1; + if ( xc_hypercall_bounce_pre(xch, values) ) + return -1; + + sysctl.cmd = XEN_SYSCTL_get_parameter; + set_xen_guest_handle(sysctl.u.get_parameter.params, params); + set_xen_guest_handle(sysctl.u.get_parameter.values, values); + sysctl.u.get_parameter.size = len; + memset(sysctl.u.get_parameter.pad, 0, sizeof(sysctl.u.get_parameter.pad)); + + ret = do_sysctl(xch, &sysctl); + + xc_hypercall_bounce_post(xch, params); + xc_hypercall_bounce_post(xch, values); + + return ret; +} + int xc_physinfo(xc_interface *xch, xc_physinfo_t *put_info) {