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rump_x86_cpu.c revision 1.3 
      1 /*	$NetBSD: rump_x86_cpu.c,v 1.3 2015/04/22 17:38:33 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 1.3 2015/04/22 17:38:33 pooka Exp $");
     33 
     34 #include <sys/param.h>
     35 #include <sys/kmem.h>
     36 
     37 #include <machine/cpu.h>
     38 
     39 #include "rump_private.h"
     40 #include "rump_curlwp.h"
     41 
     42 struct cpu_info *cpu_info_list;
     43 
     44 void
     45 rump_cpu_attach(struct cpu_info *ci)
     46 {
     47 
     48 	if (cpu_info_list == NULL)
     49 		ci->ci_flags |= CPUF_PRIMARY;
     50 
     51 	/* XXX: wrong order, but ... */
     52 	ci->ci_next = cpu_info_list;
     53 	cpu_info_list = ci;
     54 
     55 	kcpuset_set(kcpuset_attached, cpu_index(ci));
     56 	kcpuset_set(kcpuset_running, cpu_index(ci));
     57 }
     58 
     59 struct cpu_info *
     60 x86_curcpu()
     61 {
     62 
     63 	return curlwp->l_cpu;
     64 }
     65 
     66 struct lwp *
     67 x86_curlwp()
     68 {
     69 
     70 	return rump_curlwp_fast();
     71 }
     72 
     73 void
     74 wbinvd(void)
     75 {
     76 
     77 	/*
     78 	 * Used by kobj_machdep().
     79 	 *
     80 	 * But, we Best not execute this since we're not Ring0 *.
     81 	 * Honestly, I don't know why it's required even in the kernel.
     82 	 */
     83 }
     84 
     85 struct clockframe *
     86 rump_cpu_makeclockframe(void)
     87 {
     88 
     89 	return kmem_zalloc(sizeof(struct clockframe), KM_SLEEP);
     90 }
     91