1 /* $NetBSD: rump_x86_cpu.c,v 1.4 2016/01/26 23:12:18 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Antti Kantee. All Rights Reserved. 5 * 6 * Development of this software was supported by the 7 * Finnish Cultural Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 19 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __KERNEL_RCSID(0, "$NetBSD: rump_x86_cpu.c,v 1.4 2016/01/26 23:12:18 pooka Exp $"); 33 34 #include <sys/param.h> 35 #include <sys/kmem.h> 36 37 #include <machine/cpu.h> 38 39 #include <rump-sys/kern.h> 40 41 #include "rump_curlwp.h" 42 43 struct cpu_info *cpu_info_list; 44 45 void 46 rump_cpu_attach(struct cpu_info *ci) 47 { 48 49 if (cpu_info_list == NULL) 50 ci->ci_flags |= CPUF_PRIMARY; 51 52 /* XXX: wrong order, but ... */ 53 ci->ci_next = cpu_info_list; 54 cpu_info_list = ci; 55 56 kcpuset_set(kcpuset_attached, cpu_index(ci)); 57 kcpuset_set(kcpuset_running, cpu_index(ci)); 58 } 59 60 struct cpu_info * 61 x86_curcpu() 62 { 63 64 return curlwp->l_cpu; 65 } 66 67 struct lwp * 68 x86_curlwp() 69 { 70 71 return rump_curlwp_fast(); 72 } 73 74 void 75 wbinvd(void) 76 { 77 78 /* 79 * Used by kobj_machdep(). 80 * 81 * But, we Best not execute this since we're not Ring0 *. 82 * Honestly, I don't know why it's required even in the kernel. 83 */ 84 } 85 86 struct clockframe * 87 rump_cpu_makeclockframe(void) 88 { 89 90 return kmem_zalloc(sizeof(struct clockframe), KM_SLEEP); 91 } 92