mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-03 09:00:21 +00:00
86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*
|
|
* Copyright (c) 2012 NetApp, Inc.
|
|
* 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 NETAPP, INC ``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 NETAPP, INC 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 <sys/cdefs.h>
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
|
|
#include <machine/vmm.h>
|
|
#include <vmmapi.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <assert.h>
|
|
|
|
#include "bhyverun.h"
|
|
#include "spinup_ap.h"
|
|
|
|
static void
|
|
spinup_ap_realmode(struct vcpu *newcpu, uint64_t rip)
|
|
{
|
|
int vector, error;
|
|
uint16_t cs;
|
|
uint64_t desc_base;
|
|
uint32_t desc_limit, desc_access;
|
|
|
|
vector = rip >> PAGE_SHIFT;
|
|
|
|
/*
|
|
* Update the %cs and %rip of the guest so that it starts
|
|
* executing real mode code at at 'vector << 12'.
|
|
*/
|
|
error = vm_set_register(newcpu, VM_REG_GUEST_RIP, 0);
|
|
assert(error == 0);
|
|
|
|
error = vm_get_desc(newcpu, VM_REG_GUEST_CS, &desc_base,
|
|
&desc_limit, &desc_access);
|
|
assert(error == 0);
|
|
|
|
desc_base = vector << PAGE_SHIFT;
|
|
error = vm_set_desc(newcpu, VM_REG_GUEST_CS,
|
|
desc_base, desc_limit, desc_access);
|
|
assert(error == 0);
|
|
|
|
cs = (vector << PAGE_SHIFT) >> 4;
|
|
error = vm_set_register(newcpu, VM_REG_GUEST_CS, cs);
|
|
assert(error == 0);
|
|
}
|
|
|
|
void
|
|
spinup_ap(struct vcpu *newcpu, uint64_t rip)
|
|
{
|
|
int error;
|
|
|
|
error = vcpu_reset(newcpu);
|
|
assert(error == 0);
|
|
|
|
spinup_ap_realmode(newcpu, rip);
|
|
|
|
vm_resume_cpu(newcpu);
|
|
}
|