From owner-svn-src-head@FreeBSD.ORG Tue Mar 11 10:25:09 2014 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B604EF06; Tue, 11 Mar 2014 10:25:09 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id A2DB861; Tue, 11 Mar 2014 10:25:09 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s2BAP9qs023091; Tue, 11 Mar 2014 10:25:09 GMT (envelope-from royger@svn.freebsd.org) Received: (from royger@localhost) by svn.freebsd.org (8.14.8/8.14.8/Submit) id s2BAP9oS023089; Tue, 11 Mar 2014 10:25:09 GMT (envelope-from royger@svn.freebsd.org) Message-Id: <201403111025.s2BAP9oS023089@svn.freebsd.org> From: Roger Pau Monné Date: Tue, 11 Mar 2014 10:25:09 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r263011 - in head/sys: conf x86/xen X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Mar 2014 10:25:09 -0000 Author: royger Date: Tue Mar 11 10:25:08 2014 New Revision: 263011 URL: http://svnweb.freebsd.org/changeset/base/263011 Log: xen: add an apic_enumerator for PVH On PVH there's no ACPI, so the CPU enumeration must be implemented using Xen hypercalls. Approved by: gibbs Sponsored by: Citrix Systems R&D x86/xen/pvcpu_enum.c: - Enumerate avaiable vCPUs on PVH by using the VCPUOP_is_up hypercall. - Set vcpu_id for PVH guests. conf/files.amd64: - Include the PV CPU enumerator in the XENHVM build. Added: head/sys/x86/xen/pvcpu_enum.c (contents, props changed) Modified: head/sys/conf/files.amd64 Modified: head/sys/conf/files.amd64 ============================================================================== --- head/sys/conf/files.amd64 Tue Mar 11 10:24:13 2014 (r263010) +++ head/sys/conf/files.amd64 Tue Mar 11 10:25:08 2014 (r263011) @@ -558,3 +558,4 @@ x86/x86/delay.c standard x86/xen/hvm.c optional xenhvm x86/xen/xen_intr.c optional xen | xenhvm x86/xen/pv.c optional xenhvm +x86/xen/pvcpu_enum.c optional xenhvm Added: head/sys/x86/xen/pvcpu_enum.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/x86/xen/pvcpu_enum.c Tue Mar 11 10:25:08 2014 (r263011) @@ -0,0 +1,134 @@ +/*- + * Copyright (c) 2003 John Baldwin + * Copyright (c) 2013 Roger Pau Monné + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include +#include + +#include +#include + +#include + +static int xenpv_probe(void); +static int xenpv_probe_cpus(void); +static int xenpv_setup_local(void); +static int xenpv_setup_io(void); + +static struct apic_enumerator xenpv_enumerator = { + "Xen PV", + xenpv_probe, + xenpv_probe_cpus, + xenpv_setup_local, + xenpv_setup_io +}; + +/* + * This enumerator will only be registered on PVH + */ +static int +xenpv_probe(void) +{ + return (-100); +} + +/* + * Test each possible vCPU in order to find the number of vCPUs + */ +static int +xenpv_probe_cpus(void) +{ +#ifdef SMP + int i, ret; + + for (i = 0; i < MAXCPU; i++) { + ret = HYPERVISOR_vcpu_op(VCPUOP_is_up, i, NULL); + if (ret >= 0) + lapic_create((i * 2), (i == 0)); + } +#endif + return (0); +} + +/* + * Initialize the vCPU id of the BSP + */ +static int +xenpv_setup_local(void) +{ + PCPU_SET(vcpu_id, 0); + lapic_init(0); + return (0); +} + +/* + * On PVH guests there's no IO APIC + */ +static int +xenpv_setup_io(void) +{ + return (0); +} + +static void +xenpv_register(void *dummy __unused) +{ + if (xen_pv_domain()) { + apic_register_enumerator(&xenpv_enumerator); + } +} +SYSINIT(xenpv_register, SI_SUB_TUNABLES - 1, SI_ORDER_FIRST, xenpv_register, NULL); + +/* + * Setup per-CPU vCPU IDs + */ +static void +xenpv_set_ids(void *dummy) +{ + struct pcpu *pc; + int i; + + CPU_FOREACH(i) { + pc = pcpu_find(i); + pc->pc_vcpu_id = i; + } +} +SYSINIT(xenpv_set_ids, SI_SUB_CPU, SI_ORDER_MIDDLE, xenpv_set_ids, NULL);