freebsd-dev/sys/amd64/vmm/x86.h
Neel Natu ea91ca92ba Do a proper emulation of guest writes to MSR_EFER.
- Must-Be-Zero bits cannot be set.
- EFER_LME and EFER_LMA should respect the long mode consistency checks.
- EFER_NXE, EFER_FFXSR, EFER_TCE can be set if allowed by CPUID capabilities.
- Flag an error if guest tries to set EFER_LMSLE since bhyve doesn't enforce
  segment limits in 64-bit mode.

MFC after:	2 weeks
2015-05-06 05:40:20 +00:00

79 lines
2.5 KiB
C

/*-
* Copyright (c) 2011 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.
*
* $FreeBSD$
*/
#ifndef _X86_H_
#define _X86_H_
#define CPUID_0000_0000 (0x0)
#define CPUID_0000_0001 (0x1)
#define CPUID_0000_0002 (0x2)
#define CPUID_0000_0003 (0x3)
#define CPUID_0000_0004 (0x4)
#define CPUID_0000_0006 (0x6)
#define CPUID_0000_0007 (0x7)
#define CPUID_0000_000A (0xA)
#define CPUID_0000_000B (0xB)
#define CPUID_0000_000D (0xD)
#define CPUID_8000_0000 (0x80000000)
#define CPUID_8000_0001 (0x80000001)
#define CPUID_8000_0002 (0x80000002)
#define CPUID_8000_0003 (0x80000003)
#define CPUID_8000_0004 (0x80000004)
#define CPUID_8000_0006 (0x80000006)
#define CPUID_8000_0007 (0x80000007)
#define CPUID_8000_0008 (0x80000008)
/*
* CPUID instruction Fn0000_0001:
*/
#define CPUID_0000_0001_APICID_MASK (0xff<<24)
#define CPUID_0000_0001_APICID_SHIFT 24
/*
* CPUID instruction Fn0000_0001 ECX
*/
#define CPUID_0000_0001_FEAT0_VMX (1<<5)
int x86_emulate_cpuid(struct vm *vm, int vcpu_id, uint32_t *eax, uint32_t *ebx,
uint32_t *ecx, uint32_t *edx);
enum vm_cpuid_capability {
VCC_NONE,
VCC_NO_EXECUTE,
VCC_FFXSR,
VCC_TCE,
VCC_LAST
};
/*
* Return 'true' if the capability 'cap' is enabled in this virtual cpu
* and 'false' otherwise.
*/
bool vm_cpuid_capability(struct vm *vm, int vcpuid, enum vm_cpuid_capability);
#endif