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rump_x86_cpu.c revision 1.2.10.3 
      1 /*	$NetBSD: rump_x86_cpu.c,v 1.2.10.3 2017/12/03 11:39:16 jdolecek 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 1.2.10.3 2017/12/03 11:39:16 jdolecek 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