vmm_util.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2011 NetApp, Inc.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD$
   29  */
   30 
   31 #include <sys/cdefs.h>
   32 __FBSDID("$FreeBSD$");
   33 
   34 #include <sys/param.h>
   35 #include <sys/libkern.h>
   36 
   37 #include <machine/md_var.h>
   38 
   39 #include "vmm_util.h"
   40 
   41 bool
   42 vmm_is_hw_supported(void)
   43 {
   44         return (vmm_is_intel() || vmm_is_svm());
   45 }
   46 
   47 bool
   48 vmm_is_intel(void)
   49 {
   50 
   51         return (strcmp(cpu_vendor, "GenuineIntel") == 0);
   52 }
   53 
   54 bool
   55 vmm_is_svm(void)
   56 {
   57         return (strcmp(cpu_vendor, "AuthenticAMD") == 0 ||
   58             strcmp(cpu_vendor, "HygonGenuine") == 0);
   59 }
   60 
   61 bool
   62 vmm_supports_1G_pages(void)
   63 {
   64         unsigned int regs[4];
   65 
   66         /*
   67          * CPUID.80000001:EDX[bit 26] = 1 indicates support for 1GB pages
   68          *
   69          * Both Intel and AMD support this bit.
   70          */
   71         if (cpu_exthigh >= 0x80000001) {
   72                 do_cpuid(0x80000001, regs);
   73                 if (regs[3] & (1 << 26))
   74                         return (true);
   75         }
   76         return (false);
   77 }
   78 
   79 #include <sys/proc.h>
   80 #include <machine/frame.h>
   81 #define DUMP_REG(x)     printf(#x "\t\t0x%016lx\n", (long)(tf->tf_ ## x))
   82 #define DUMP_SEG(x)     printf(#x "\t\t0x%04x\n", (unsigned)(tf->tf_ ## x))
   83 void
   84 dump_trapframe(struct trapframe *tf)
   85 {
   86         DUMP_REG(rdi);
   87         DUMP_REG(rsi);
   88         DUMP_REG(rdx);
   89         DUMP_REG(rcx);
   90         DUMP_REG(r8);
   91         DUMP_REG(r9);
   92         DUMP_REG(rax);
   93         DUMP_REG(rbx);
   94         DUMP_REG(rbp);
   95         DUMP_REG(r10);
   96         DUMP_REG(r11);
   97         DUMP_REG(r12);
   98         DUMP_REG(r13);
   99         DUMP_REG(r14);
  100         DUMP_REG(r15);
  101         DUMP_REG(trapno);
  102         DUMP_REG(addr);
  103         DUMP_REG(flags);
  104         DUMP_REG(err);
  105         DUMP_REG(rip);
  106         DUMP_REG(rflags);
  107         DUMP_REG(rsp);
  108         DUMP_SEG(cs);
  109         DUMP_SEG(ss);
  110         DUMP_SEG(fs);
  111         DUMP_SEG(gs);
  112         DUMP_SEG(es);
  113         DUMP_SEG(ds);
  114 }

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FreeBSD/Linux Kernel Cross Reference sys/amd64/vmm/vmm_util.c

FreeBSD/Linux Kernel Cross Reference
sys/amd64/vmm/vmm_util.c