9631d598cc
This state is independent of the type of hardware assist used so there is really no need for it to be in Intel-specific code. Obtained from: NetApp
125 lines
2.6 KiB
C
125 lines
2.6 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/pcpu.h>
|
|
|
|
#include <machine/cpufunc.h>
|
|
#include <machine/segments.h>
|
|
#include <machine/specialreg.h>
|
|
|
|
#include "vmm_host.h"
|
|
|
|
static uint64_t vmm_host_efer, vmm_host_pat, vmm_host_cr0, vmm_host_cr4;
|
|
|
|
void
|
|
vmm_host_state_init(void)
|
|
{
|
|
|
|
vmm_host_efer = rdmsr(MSR_EFER);
|
|
vmm_host_pat = rdmsr(MSR_PAT);
|
|
|
|
/*
|
|
* We always want CR0.TS to be set when the processor does a VM exit.
|
|
*
|
|
* With emulation turned on unconditionally after a VM exit, we are
|
|
* able to trap inadvertent use of the FPU until the guest FPU state
|
|
* has been safely squirreled away.
|
|
*/
|
|
vmm_host_cr0 = rcr0() | CR0_TS;
|
|
|
|
vmm_host_cr4 = rcr4();
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_pat(void)
|
|
{
|
|
|
|
return (vmm_host_pat);
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_efer(void)
|
|
{
|
|
|
|
return (vmm_host_efer);
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_cr0(void)
|
|
{
|
|
|
|
return (vmm_host_cr0);
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_cr4(void)
|
|
{
|
|
|
|
return (vmm_host_cr4);
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_datasel(void)
|
|
{
|
|
|
|
return (GSEL(GDATA_SEL, SEL_KPL));
|
|
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_codesel(void)
|
|
{
|
|
|
|
return (GSEL(GCODE_SEL, SEL_KPL));
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_tsssel(void)
|
|
{
|
|
|
|
return (GSEL(GPROC0_SEL, SEL_KPL));
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_fsbase(void)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
uint64_t
|
|
vmm_get_host_idtrbase(void)
|
|
{
|
|
|
|
return (r_idt.rd_base);
|
|
}
|