freebsd-dev/sys/amd64/vmm/intel/vmx_genassym.c
Neel Natu 81d597b736 There is no need to save and restore the host's return address in the
'struct vmxctx'. It is preserved on the host stack across a guest entry
and exit and just restoring the host's '%rsp' is sufficient.

Pointed out by:	grehan@
2014-04-11 20:15:53 +00:00

89 lines
3.6 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.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/assym.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/vmm.h>
#include "vmx_cpufunc.h"
#include "vmx.h"
ASSYM(VMXCTX_GUEST_RDI, offsetof(struct vmxctx, guest_rdi));
ASSYM(VMXCTX_GUEST_RSI, offsetof(struct vmxctx, guest_rsi));
ASSYM(VMXCTX_GUEST_RDX, offsetof(struct vmxctx, guest_rdx));
ASSYM(VMXCTX_GUEST_RCX, offsetof(struct vmxctx, guest_rcx));
ASSYM(VMXCTX_GUEST_R8, offsetof(struct vmxctx, guest_r8));
ASSYM(VMXCTX_GUEST_R9, offsetof(struct vmxctx, guest_r9));
ASSYM(VMXCTX_GUEST_RAX, offsetof(struct vmxctx, guest_rax));
ASSYM(VMXCTX_GUEST_RBX, offsetof(struct vmxctx, guest_rbx));
ASSYM(VMXCTX_GUEST_RBP, offsetof(struct vmxctx, guest_rbp));
ASSYM(VMXCTX_GUEST_R10, offsetof(struct vmxctx, guest_r10));
ASSYM(VMXCTX_GUEST_R11, offsetof(struct vmxctx, guest_r11));
ASSYM(VMXCTX_GUEST_R12, offsetof(struct vmxctx, guest_r12));
ASSYM(VMXCTX_GUEST_R13, offsetof(struct vmxctx, guest_r13));
ASSYM(VMXCTX_GUEST_R14, offsetof(struct vmxctx, guest_r14));
ASSYM(VMXCTX_GUEST_R15, offsetof(struct vmxctx, guest_r15));
ASSYM(VMXCTX_GUEST_CR2, offsetof(struct vmxctx, guest_cr2));
ASSYM(VMXCTX_HOST_R15, offsetof(struct vmxctx, host_r15));
ASSYM(VMXCTX_HOST_R14, offsetof(struct vmxctx, host_r14));
ASSYM(VMXCTX_HOST_R13, offsetof(struct vmxctx, host_r13));
ASSYM(VMXCTX_HOST_R12, offsetof(struct vmxctx, host_r12));
ASSYM(VMXCTX_HOST_RBP, offsetof(struct vmxctx, host_rbp));
ASSYM(VMXCTX_HOST_RSP, offsetof(struct vmxctx, host_rsp));
ASSYM(VMXCTX_HOST_RBX, offsetof(struct vmxctx, host_rbx));
ASSYM(VMXCTX_INST_FAIL_STATUS, offsetof(struct vmxctx, inst_fail_status));
ASSYM(VMXCTX_PMAP, offsetof(struct vmxctx, pmap));
ASSYM(VMX_EPTGEN, offsetof(struct vmx, eptgen));
ASSYM(VMX_EPTP, offsetof(struct vmx, eptp));
ASSYM(VM_FAIL_INVALID, VM_FAIL_INVALID);
ASSYM(VM_FAIL_VALID, VM_FAIL_VALID);
ASSYM(VMX_GUEST_VMEXIT, VMX_GUEST_VMEXIT);
ASSYM(VMX_VMRESUME_ERROR, VMX_VMRESUME_ERROR);
ASSYM(VMX_VMLAUNCH_ERROR, VMX_VMLAUNCH_ERROR);
ASSYM(VMX_INVEPT_ERROR, VMX_INVEPT_ERROR);
ASSYM(PC_CPUID, offsetof(struct pcpu, pc_cpuid));
ASSYM(PM_ACTIVE, offsetof(struct pmap, pm_active));
ASSYM(PM_EPTGEN, offsetof(struct pmap, pm_eptgen));
ASSYM(KERNEL_SS, GSEL(GDATA_SEL, SEL_KPL));
ASSYM(KERNEL_CS, GSEL(GCODE_SEL, SEL_KPL));