12612 import Pluribus bhyve port

Authored by: Krupal Joshi <krupal.joshi@pluribusnetworks.com>
Contributed by: Pluribus Networks Inc.
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Dan McDonald <danmcd@joyent.com>
Reviewed by: Mike Gerdts <mike.gerdts@joyent.com>
Reviewed by: Patrick Mooney <patrick.mooney@joyent.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Robert Mustacchi <rm@fingolfin.org>

7 files changed, 1618 insertions, 0 deletions

diff --git a/usr/src/lib/libvmmapi/Makefile b/usr/src/lib/libvmmapi/Makefile
new file mode 100644
index 0000000000..60621fcb75
--- /dev/null
+++ b/usr/src/lib/libvmmapi/Makefile
@@ -0,0 +1,49 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright 2013 Pluribus Networks Inc.
+#
+
+include		../Makefile.lib
+
+HDRS =		vmmapi.h
+
+HDRDIR =	common
+
+$(BUILD64)SUBDIRS += $(MACH64)
+
+all:=		TARGET= all
+install:=	TARGET= install
+clean:=		TARGET= clean
+clobber:=	TARGET= clobber
+lint:=		TARGET= lint
+_msg:=		TARGET= _msg
+
+.KEEP_STATE:
+
+all install clean clobber lint: $(SUBDIRS)
+
+# install rule for install_h target
+
+install_h: $(ROOTHDRS)
+
+check: $(CHECKHDRS)
+
+_msg: $(MSGSUBDIRS)
+
+$(SUBDIRS): FRC
+	cd $@; pwd; $(MAKE) CW_NO_SHADOW=true __GNUC= $(TARGET)
+
+FRC:
+
+include ../Makefile.targ
+include ../../Makefile.msg.targ
diff --git a/usr/src/lib/libvmmapi/Makefile.com b/usr/src/lib/libvmmapi/Makefile.com
new file mode 100644
index 0000000000..e41a82f9a2
--- /dev/null
+++ b/usr/src/lib/libvmmapi/Makefile.com
@@ -0,0 +1,53 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright 2013 Pluribus Networks Inc.
+#
+
+LIBRARY		= libvmmapi.a
+VERS		= .1
+
+OBJECTS		= vmmapi.o expand_number.o
+
+# include library definitions
+include ../../Makefile.lib
+
+# install this library in the root filesystem
+include ../../Makefile.rootfs
+
+SRCDIR		=	../common
+
+LIBS		=	$(DYNLIB) $(LINTLIB)
+
+CPPFLAGS	=	-I$(COMPAT)/freebsd -I$(CONTRIB)/freebsd \
+	$(CPPFLAGS.master) -I$(SRC)/uts/i86pc
+
+$(LINTLIB) :=	SRCS = $(SRCDIR)/$(LINTSRC)
+
+LDLIBS		+=	-lc
+
+.KEEP_STATE:
+
+all: $(LIBS)
+
+lint: lintcheck
+
+pics/%.o: $(CONTRIB)/freebsd/lib/libutil/%.c
+	$(COMPILE.c) -o $@ $<
+	$(POST_PROCESS_O)
+
+pics/%.o: ../common/%.c
+	$(COMPILE.c) -o $@ $<
+	$(POST_PROCESS_O)
+
+# include library targets
+include ../../Makefile.targ
diff --git a/usr/src/lib/libvmmapi/amd64/Makefile b/usr/src/lib/libvmmapi/amd64/Makefile
new file mode 100644
index 0000000000..b5cac1ffce
--- /dev/null
+++ b/usr/src/lib/libvmmapi/amd64/Makefile
@@ -0,0 +1,21 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright 2013 Pluribus Networks Inc.
+#
+
+include ../Makefile.com
+include ../../Makefile.lib.64
+
+CPPFLAGS += -I$(COMPAT)/freebsd/amd64 -I$(CONTRIB)/freebsd/amd64
+
+install: all $(ROOTLIBS64) $(ROOTLINKS64) $(ROOTLINT64)
diff --git a/usr/src/lib/libvmmapi/common/llib-lvmmapi b/usr/src/lib/libvmmapi/common/llib-lvmmapi
new file mode 100644
index 0000000000..221ed3a23e
--- /dev/null
+++ b/usr/src/lib/libvmmapi/common/llib-lvmmapi
@@ -0,0 +1,2 @@
+/* LINTLIBRARY */
+/* PROTOLIB1 */
diff --git a/usr/src/lib/libvmmapi/common/mapfile-vers b/usr/src/lib/libvmmapi/common/mapfile-vers
new file mode 100644
index 0000000000..7a8443a2b8
--- /dev/null
+++ b/usr/src/lib/libvmmapi/common/mapfile-vers
@@ -0,0 +1,77 @@
+#
+# This file and its contents are supplied under the terms of the
+# Common Development and Distribution License ("CDDL"), version 1.0.
+# You may only use this file in accordance with the terms of version
+# 1.0 of the CDDL.
+#
+# A full copy of the text of the CDDL should have accompanied this
+# source.  A copy of the CDDL is also available via the Internet at
+# http://www.illumos.org/license/CDDL.
+#
+
+#
+# Copyright 2013 Pluribus Networks Inc.
+#
+
+#
+# MAPFILE HEADER START
+#
+# WARNING:  STOP NOW.  DO NOT MODIFY THIS FILE.
+# Object versioning must comply with the rules detailed in
+#
+#	usr/src/lib/README.mapfiles
+#
+# You should not be making modifications here until you've read the most current
+# copy of that file. If you need help, contact a gatekeeper for guidance.
+#
+# MAPFILE HEADER END
+#
+
+SUNWprivate_1.0 {
+    global:
+	vcpu_reset;
+	vm_activate_cpu;
+	vm_apicid2vcpu;
+	vm_capability_name2type;
+	vm_capability_type2name;
+	vm_copy_setup;
+	vm_copy_teardown;
+	vm_copyin;
+	vm_copyout;
+	vm_create;
+	vm_destroy;
+	vm_get_capability;
+	vm_get_desc;
+	vm_get_highmem_size;
+	vm_get_lowmem_limit;
+	vm_get_lowmem_size;
+	vm_get_memory_seg;
+	vm_get_register;
+	vm_get_seg_desc;
+	vm_get_x2apic_state;
+	vm_gla2gpa;
+	vm_inject_exception;
+	vm_isa_assert_irq;
+	vm_isa_deassert_irq;
+	vm_isa_pulse_irq;
+	vm_isa_set_irq_trigger;
+	vm_ioapic_assert_irq;
+	vm_ioapic_deassert_irq;
+	vm_ioapic_pincount;
+	vm_ioapic_pulse_irq;
+	vm_lapic_irq;
+	vm_lapic_msi;
+	vm_map_gpa;
+	vm_open;
+	vm_parse_memsize;
+	vm_restart_instruction;
+	vm_run;
+	vm_set_capability;
+	vm_set_desc;
+	vm_set_register;
+	vm_set_x2apic_state;
+	vm_setup_memory;
+	vm_setup_rom;
+    local:
+        *;
+};
diff --git a/usr/src/lib/libvmmapi/common/vmmapi.c b/usr/src/lib/libvmmapi/common/vmmapi.c
new file mode 100644
index 0000000000..bbab3961a9
--- /dev/null
+++ b/usr/src/lib/libvmmapi/common/vmmapi.c
@@ -0,0 +1,1257 @@
+/*-
+ * 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: head/lib/libvmmapi/vmmapi.c 280929 2015-04-01 00:15:31Z tychon $
+ */
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source.  A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ *
+ * Copyright 2015 Pluribus Networks Inc.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/lib/libvmmapi/vmmapi.c 280929 2015-04-01 00:15:31Z tychon $");
+
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/_iovec.h>
+#include <sys/cpuset.h>
+
+#include <machine/specialreg.h>
+
+#ifndef	__FreeBSD__
+#include <errno.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <libutil.h>
+
+#include <machine/vmm.h>
+#include <machine/vmm_dev.h>
+#ifndef	__FreeBSD__
+#include <sys/vmm_impl.h>
+#endif
+
+#include "vmmapi.h"
+
+#define	KB	(1024UL)
+#define	MB	(1024 * 1024UL)
+#define	GB	(1024 * 1024 * 1024UL)
+
+struct vmctx {
+	int	fd;
+	uint32_t lowmem_limit;
+	enum vm_mmap_style vms;
+	char	*lowermem_addr;
+	char	*biosmem_addr;
+	size_t	lowmem;
+	char	*lowmem_addr;
+	size_t	highmem;
+	char	*highmem_addr;
+	uint64_t rombase;
+	uint64_t romlimit;
+	char	*rom_addr;
+	char	*name;
+};
+
+#ifdef	__FreeBSD__
+#define	CREATE(x)  sysctlbyname("hw.vmm.create", NULL, NULL, (x), strlen((x)))
+#define	DESTROY(x) sysctlbyname("hw.vmm.destroy", NULL, NULL, (x), strlen((x)))
+#else
+#define	CREATE(x)	vmm_vm_create(x)
+#define	DESTROY(x)	vmm_vm_destroy(x)
+#endif
+
+static int
+vm_device_open(const char *name)
+{
+        int fd, len;
+        char *vmfile;
+
+#ifdef	__FreeBSD__
+	len = strlen("/dev/vmm/") + strlen(name) + 1;
+#else
+	len = strlen("/devices/pseudo/vmm@0:") + strlen(name) + 1;
+#endif
+	vmfile = malloc(len);
+	assert(vmfile != NULL);
+#ifdef	__FreeBSD__
+	snprintf(vmfile, len, "/dev/vmm/%s", name);
+#else
+	snprintf(vmfile, len, "/devices/pseudo/vmm@0:%s", name);
+#endif
+
+        /* Open the device file */
+        fd = open(vmfile, O_RDWR, 0);
+
+	free(vmfile);
+        return (fd);
+}
+
+#ifndef	__FreeBSD__
+static int
+vmm_vm_create(const char *name)
+{
+	const char vmm_ctl[] = "/devices/pseudo/vmm@0:ctl";
+	struct vmm_ioctl vi;
+	int err = 0;
+	int ctl_fd;
+
+	(void) strlcpy(vi.vmm_name, name, sizeof (vi.vmm_name) - 1);
+
+	ctl_fd = open(vmm_ctl, O_EXCL | O_RDWR);
+	if (ctl_fd == -1) {
+		err = errno;
+		if ((errno == EPERM) || (errno == EACCES)) {
+			fprintf(stderr, "you do not have permission to "
+				"perform that operation.\n");
+		} else {
+			fprintf(stderr, "open: %s: %s\n", vmm_ctl,
+				strerror(errno));
+		}
+		return (err);
+	}
+	if (ioctl(ctl_fd, VMM_CREATE_VM, &vi) == -1) {
+		err = errno;
+		fprintf(stderr, "couldn't create vm \"%s\"", name);
+	}
+	close (ctl_fd);
+
+	return (err);
+}
+#endif
+
+int
+vm_create(const char *name)
+{
+
+	return (CREATE((char *)name));
+}
+
+struct vmctx *
+vm_open(const char *name)
+{
+	struct vmctx *vm;
+
+	vm = malloc(sizeof(struct vmctx) + strlen(name) + 1);
+	assert(vm != NULL);
+
+	vm->fd = -1;
+	vm->lowmem_limit = 3 * GB;
+	vm->name = (char *)(vm + 1);
+	strcpy(vm->name, name);
+
+	if ((vm->fd = vm_device_open(vm->name)) < 0)
+		goto err;
+
+	return (vm);
+err:
+	(void) vm_destroy(vm);
+	return (NULL);
+}
+
+#ifndef	__FreeBSD__
+static int
+vmm_vm_destroy(const char *name)
+{
+	const char vmm_ctl[] = "/devices/pseudo/vmm@0:ctl";
+	struct vmm_ioctl vi;	
+	int ctl_fd;
+	int err = 0;
+
+	(void) strlcpy(vi.vmm_name, name, sizeof (vi.vmm_name) - 1);
+
+	ctl_fd = open(vmm_ctl, O_EXCL | O_RDWR);
+	if (ctl_fd == -1) {
+		err = errno;
+		if ((errno == EPERM) || (errno == EACCES)) {
+			fprintf(stderr, "you do not have permission to "
+				"perform that operation.\n");
+		} else {
+			fprintf(stderr, "open: %s: %s\n", vmm_ctl,
+				strerror(errno));
+		}
+		return (err);
+	}
+	if (ioctl(ctl_fd, VMM_DESTROY_VM, &vi) == -1) {
+		err = errno;
+		fprintf(stderr, "couldn't destroy vm \"%s\"", name);
+	}
+	close (ctl_fd);
+	return (err);
+}
+#endif
+
+int
+vm_destroy(struct vmctx *vm)
+{
+	int err;
+	assert(vm != NULL);
+
+	if (vm->fd >= 0)
+		close(vm->fd);
+	err = DESTROY(vm->name);
+
+	free(vm);
+	return (err);
+}
+
+int
+vm_parse_memsize(const char *optarg, size_t *ret_memsize)
+{
+	char *endptr;
+	size_t optval;
+	int error;
+
+	optval = strtoul(optarg, &endptr, 0);
+	if (*optarg != '\0' && *endptr == '\0') {
+		/*
+		 * For the sake of backward compatibility if the memory size
+		 * specified on the command line is less than a megabyte then
+		 * it is interpreted as being in units of MB.
+		 */
+		if (optval < MB)
+			optval *= MB;
+		*ret_memsize = optval;
+		error = 0;
+	} else
+		error = expand_number(optarg, ret_memsize);
+
+	return (error);
+}
+
+#ifdef	__FreeBSD__
+size_t
+vmm_get_mem_total(void)
+{
+	size_t mem_total = 0;
+	size_t oldlen = sizeof(mem_total);
+	int error;
+	error = sysctlbyname("hw.vmm.mem_total", &mem_total, &oldlen, NULL, 0);
+	if (error)
+		return -1;
+	return mem_total;
+}
+
+size_t
+vmm_get_mem_free(void)
+{
+	size_t mem_free = 0;
+	size_t oldlen = sizeof(mem_free);
+	int error;
+	error = sysctlbyname("hw.vmm.mem_free", &mem_free, &oldlen, NULL, 0);
+	if (error)
+		return -1;
+	return mem_free;
+}
+#endif
+
+int
+vm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa, size_t *ret_len,
+		  int *wired)
+{
+	int error;
+	struct vm_memory_segment seg;
+
+	bzero(&seg, sizeof(seg));
+	seg.gpa = gpa;
+	error = ioctl(ctx->fd, VM_GET_MEMORY_SEG, &seg);
+	*ret_len = seg.len;
+	if (wired != NULL)
+		*wired = seg.wired;
+	return (error);
+}
+
+uint32_t
+vm_get_lowmem_limit(struct vmctx *ctx)
+{
+
+	return (ctx->lowmem_limit);
+}
+
+void
+vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit)
+{
+
+	ctx->lowmem_limit = limit;
+}
+
+static int
+setup_memory_segment(struct vmctx *ctx, vm_paddr_t gpa, size_t len, char **addr)
+{
+	int error;
+	struct vm_memory_segment seg;
+
+	/*
+	 * Create and optionally map 'len' bytes of memory at guest
+	 * physical address 'gpa'
+	 */
+	bzero(&seg, sizeof(seg));
+	seg.gpa = gpa;
+	seg.len = len;
+	error = ioctl(ctx->fd, VM_MAP_MEMORY, &seg);
+	if (error == 0 && addr != NULL) {
+		*addr = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED,
+				ctx->fd, gpa);
+	}
+	return (error);
+}
+
+int
+vm_setup_memory(struct vmctx *ctx, size_t memsize, enum vm_mmap_style vms)
+{
+	char **addr;
+	int error;
+
+	/* XXX VM_MMAP_SPARSE not implemented yet */
+	assert(vms == VM_MMAP_NONE || vms == VM_MMAP_ALL);
+	ctx->vms = vms;
+
+	/*
+	 * If 'memsize' cannot fit entirely in the 'lowmem' segment then
+	 * create another 'highmem' segment above 4GB for the remainder.
+	 */
+	if (memsize > ctx->lowmem_limit) {
+		ctx->lowmem = ctx->lowmem_limit;
+		ctx->highmem = memsize - ctx->lowmem;
+	} else {
+		ctx->lowmem = memsize;
+		ctx->highmem = 0;
+	}
+
+	if (ctx->lowmem > 0) {
+		addr = (vms == VM_MMAP_ALL) ? &ctx->lowermem_addr : NULL;
+		error = setup_memory_segment(ctx, 0, 640*KB, addr);
+		if (error)
+			return (error);
+
+		addr = (vms == VM_MMAP_ALL) ? &ctx->biosmem_addr : NULL;
+		error = setup_memory_segment(ctx, 768*KB, 256*KB, addr);
+		if (error)
+			return (error);
+
+		addr = (vms == VM_MMAP_ALL) ? &ctx->lowmem_addr : NULL;
+		error = setup_memory_segment(ctx, 1*MB, ctx->lowmem - 1*MB, addr);
+		if (error)
+			return (error);
+	}
+
+	if (ctx->highmem > 0) {
+		addr = (vms == VM_MMAP_ALL) ? &ctx->highmem_addr : NULL;
+		error = setup_memory_segment(ctx, 4*GB, ctx->highmem, addr);
+		if (error)
+			return (error);
+	}
+
+	return (0);
+}
+
+int
+vm_setup_rom(struct vmctx *ctx, vm_paddr_t gpa, size_t len)
+{
+	ctx->rombase = gpa;
+	ctx->romlimit = gpa + len;
+
+	return (setup_memory_segment(ctx, gpa, len, &ctx->rom_addr));
+}
+
+void *
+vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len)
+{
+
+	/* XXX VM_MMAP_SPARSE not implemented yet */
+	assert(ctx->vms == VM_MMAP_ALL);
+
+	if (gaddr + len <= 1*MB) {
+		if (gaddr + len <= 640*KB)
+			return ((void *)(ctx->lowermem_addr + gaddr));
+
+		if (768*KB <= gaddr && gaddr + len <= 1*MB) {
+			gaddr -= 768*KB;
+			return ((void *)(ctx->biosmem_addr + gaddr));
+		}
+
+		return (NULL);
+	}
+
+	if (gaddr < ctx->lowmem && gaddr + len <= ctx->lowmem) {
+		gaddr -= 1*MB;
+		return ((void *)(ctx->lowmem_addr + gaddr));
+	}
+
+	if (ctx->rombase <= gaddr && gaddr + len <= ctx->romlimit) {
+		gaddr -= ctx->rombase;
+		return ((void *)(ctx->rom_addr + gaddr));
+	}
+
+	if (gaddr >= 4*GB) {
+		gaddr -= 4*GB;
+		if (gaddr < ctx->highmem && gaddr + len <= ctx->highmem)
+			return ((void *)(ctx->highmem_addr + gaddr));
+	}
+
+	return (NULL);
+}
+
+size_t
+vm_get_lowmem_size(struct vmctx *ctx)
+{
+
+	return (ctx->lowmem);
+}
+
+size_t
+vm_get_highmem_size(struct vmctx *ctx)
+{
+
+	return (ctx->highmem);
+}
+
+int
+vm_set_desc(struct vmctx *ctx, int vcpu, int reg,
+	    uint64_t base, uint32_t limit, uint32_t access)
+{
+	int error;
+	struct vm_seg_desc vmsegdesc;
+
+	bzero(&vmsegdesc, sizeof(vmsegdesc));
+	vmsegdesc.cpuid = vcpu;
+	vmsegdesc.regnum = reg;
+	vmsegdesc.desc.base = base;
+	vmsegdesc.desc.limit = limit;
+	vmsegdesc.desc.access = access;
+
+	error = ioctl(ctx->fd, VM_SET_SEGMENT_DESCRIPTOR, &vmsegdesc);
+	return (error);
+}
+
+int
+vm_get_desc(struct vmctx *ctx, int vcpu, int reg,
+	    uint64_t *base, uint32_t *limit, uint32_t *access)
+{
+	int error;
+	struct vm_seg_desc vmsegdesc;
+
+	bzero(&vmsegdesc, sizeof(vmsegdesc));
+	vmsegdesc.cpuid = vcpu;
+	vmsegdesc.regnum = reg;
+
+	error = ioctl(ctx->fd, VM_GET_SEGMENT_DESCRIPTOR, &vmsegdesc);
+	if (error == 0) {
+		*base = vmsegdesc.desc.base;
+		*limit = vmsegdesc.desc.limit;
+		*access = vmsegdesc.desc.access;
+	}
+	return (error);
+}
+
+int
+vm_get_seg_desc(struct vmctx *ctx, int vcpu, int reg, struct seg_desc *seg_desc)
+{
+	int error;
+
+	error = vm_get_desc(ctx, vcpu, reg, &seg_desc->base, &seg_desc->limit,
+	    &seg_desc->access);
+	return (error);
+}
+
+int
+vm_set_register(struct vmctx *ctx, int vcpu, int reg, uint64_t val)
+{
+	int error;
+	struct vm_register vmreg;
+
+	bzero(&vmreg, sizeof(vmreg));
+	vmreg.cpuid = vcpu;
+	vmreg.regnum = reg;
+	vmreg.regval = val;
+
+	error = ioctl(ctx->fd, VM_SET_REGISTER, &vmreg);
+	return (error);
+}
+
+int
+vm_get_register(struct vmctx *ctx, int vcpu, int reg, uint64_t *ret_val)
+{
+	int error;
+	struct vm_register vmreg;
+
+	bzero(&vmreg, sizeof(vmreg));
+	vmreg.cpuid = vcpu;
+	vmreg.regnum = reg;
+
+	error = ioctl(ctx->fd, VM_GET_REGISTER, &vmreg);
+	*ret_val = vmreg.regval;
+	return (error);
+}
+
+int
+vm_run(struct vmctx *ctx, int vcpu, struct vm_exit *vmexit)
+{
+	int error;
+	struct vm_run vmrun;
+
+	bzero(&vmrun, sizeof(vmrun));
+	vmrun.cpuid = vcpu;
+
+	error = ioctl(ctx->fd, VM_RUN, &vmrun);
+	bcopy(&vmrun.vm_exit, vmexit, sizeof(struct vm_exit));
+	return (error);
+}
+
+static int
+vm_inject_exception_real(struct vmctx *ctx, int vcpu, int vector,
+    int error_code, int error_code_valid)
+{
+	struct vm_exception exc;
+
+	bzero(&exc, sizeof(exc));
+	exc.cpuid = vcpu;
+	exc.vector = vector;
+	exc.error_code = error_code;
+	exc.error_code_valid = error_code_valid;
+
+	return (ioctl(ctx->fd, VM_INJECT_EXCEPTION, &exc));
+}
+
+int
+vm_inject_exception(struct vmctx *ctx, int vcpu, int vector, int errcode_valid,
+    uint32_t errcode, int restart_instruction)
+{
+	struct vm_exception exc;
+
+	exc.cpuid = vcpu;
+	exc.vector = vector;
+	exc.error_code = errcode;
+	exc.error_code_valid = errcode_valid;
+	exc.restart_instruction = restart_instruction;
+
+	return (ioctl(ctx->fd, VM_INJECT_EXCEPTION, &exc));
+}
+
+int
+vm_apicid2vcpu(struct vmctx *ctx, int apicid)
+{
+	/*
+	 * The apic id associated with the 'vcpu' has the same numerical value
+	 * as the 'vcpu' itself.
+	 */
+	return (apicid);
+}
+
+int
+vm_lapic_irq(struct vmctx *ctx, int vcpu, int vector)
+{
+	struct vm_lapic_irq vmirq;
+
+	bzero(&vmirq, sizeof(vmirq));
+	vmirq.cpuid = vcpu;
+	vmirq.vector = vector;
+
+	return (ioctl(ctx->fd, VM_LAPIC_IRQ, &vmirq));
+}
+
+int
+vm_lapic_local_irq(struct vmctx *ctx, int vcpu, int vector)
+{
+	struct vm_lapic_irq vmirq;
+
+	bzero(&vmirq, sizeof(vmirq));
+	vmirq.cpuid = vcpu;
+	vmirq.vector = vector;
+
+	return (ioctl(ctx->fd, VM_LAPIC_LOCAL_IRQ, &vmirq));
+}
+
+int
+vm_lapic_msi(struct vmctx *ctx, uint64_t addr, uint64_t msg)
+{
+	struct vm_lapic_msi vmmsi;
+
+	bzero(&vmmsi, sizeof(vmmsi));
+	vmmsi.addr = addr;
+	vmmsi.msg = msg;
+
+	return (ioctl(ctx->fd, VM_LAPIC_MSI, &vmmsi));
+}
+
+int
+vm_ioapic_assert_irq(struct vmctx *ctx, int irq)
+{
+	struct vm_ioapic_irq ioapic_irq;
+
+	bzero(&ioapic_irq, sizeof(struct vm_ioapic_irq));
+	ioapic_irq.irq = irq;
+
+	return (ioctl(ctx->fd, VM_IOAPIC_ASSERT_IRQ, &ioapic_irq));
+}
+
+int
+vm_ioapic_deassert_irq(struct vmctx *ctx, int irq)
+{
+	struct vm_ioapic_irq ioapic_irq;
+
+	bzero(&ioapic_irq, sizeof(struct vm_ioapic_irq));
+	ioapic_irq.irq = irq;
+
+	return (ioctl(ctx->fd, VM_IOAPIC_DEASSERT_IRQ, &ioapic_irq));
+}
+
+int
+vm_ioapic_pulse_irq(struct vmctx *ctx, int irq)
+{
+	struct vm_ioapic_irq ioapic_irq;
+
+	bzero(&ioapic_irq, sizeof(struct vm_ioapic_irq));
+	ioapic_irq.irq = irq;
+
+	return (ioctl(ctx->fd, VM_IOAPIC_PULSE_IRQ, &ioapic_irq));
+}
+
+int
+vm_ioapic_pincount(struct vmctx *ctx, int *pincount)
+{
+
+	return (ioctl(ctx->fd, VM_IOAPIC_PINCOUNT, pincount));
+}
+
+int
+vm_isa_assert_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq)
+{
+	struct vm_isa_irq isa_irq;
+
+	bzero(&isa_irq, sizeof(struct vm_isa_irq));
+	isa_irq.atpic_irq = atpic_irq;
+	isa_irq.ioapic_irq = ioapic_irq;
+
+	return (ioctl(ctx->fd, VM_ISA_ASSERT_IRQ, &isa_irq));
+}
+
+int
+vm_isa_deassert_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq)
+{
+	struct vm_isa_irq isa_irq;
+
+	bzero(&isa_irq, sizeof(struct vm_isa_irq));
+	isa_irq.atpic_irq = atpic_irq;
+	isa_irq.ioapic_irq = ioapic_irq;
+
+	return (ioctl(ctx->fd, VM_ISA_DEASSERT_IRQ, &isa_irq));
+}
+
+int
+vm_isa_pulse_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq)
+{
+	struct vm_isa_irq isa_irq;
+
+	bzero(&isa_irq, sizeof(struct vm_isa_irq));
+	isa_irq.atpic_irq = atpic_irq;
+	isa_irq.ioapic_irq = ioapic_irq;
+
+	return (ioctl(ctx->fd, VM_ISA_PULSE_IRQ, &isa_irq));
+}
+
+int
+vm_isa_set_irq_trigger(struct vmctx *ctx, int atpic_irq,
+    enum vm_intr_trigger trigger)
+{
+	struct vm_isa_irq_trigger isa_irq_trigger;
+
+	bzero(&isa_irq_trigger, sizeof(struct vm_isa_irq_trigger));
+	isa_irq_trigger.atpic_irq = atpic_irq;
+	isa_irq_trigger.trigger = trigger;
+
+	return (ioctl(ctx->fd, VM_ISA_SET_IRQ_TRIGGER, &isa_irq_trigger));
+}
+
+int
+vm_inject_nmi(struct vmctx *ctx, int vcpu)
+{
+	struct vm_nmi vmnmi;
+
+	bzero(&vmnmi, sizeof(vmnmi));
+	vmnmi.cpuid = vcpu;
+
+	return (ioctl(ctx->fd, VM_INJECT_NMI, &vmnmi));
+}
+
+static struct {
+	const char	*name;
+	int		type;
+} capstrmap[] = {
+	{ "hlt_exit",		VM_CAP_HALT_EXIT },
+	{ "mtrap_exit",		VM_CAP_MTRAP_EXIT },
+	{ "pause_exit",		VM_CAP_PAUSE_EXIT },
+	{ "unrestricted_guest",	VM_CAP_UNRESTRICTED_GUEST },
+	{ "enable_invpcid",	VM_CAP_ENABLE_INVPCID },
+	{ 0 }
+};
+
+int
+vm_capability_name2type(const char *capname)
+{
+	int i;
+
+	for (i = 0; capstrmap[i].name != NULL && capname != NULL; i++) {
+		if (strcmp(capstrmap[i].name, capname) == 0)
+			return (capstrmap[i].type);
+	}
+
+	return (-1);
+}
+
+const char *
+vm_capability_type2name(int type)
+{
+	int i;
+
+	for (i = 0; capstrmap[i].name != NULL; i++) {
+		if (capstrmap[i].type == type)
+			return (capstrmap[i].name);
+	}
+
+	return (NULL);
+}
+
+int
+vm_get_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap,
+		  int *retval)
+{
+	int error;
+	struct vm_capability vmcap;
+
+	bzero(&vmcap, sizeof(vmcap));
+	vmcap.cpuid = vcpu;
+	vmcap.captype = cap;
+
+	error = ioctl(ctx->fd, VM_GET_CAPABILITY, &vmcap);
+	*retval = vmcap.capval;
+	return (error);
+}
+
+int
+vm_set_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap, int val)
+{
+	struct vm_capability vmcap;
+
+	bzero(&vmcap, sizeof(vmcap));
+	vmcap.cpuid = vcpu;
+	vmcap.captype = cap;
+	vmcap.capval = val;
+	
+	return (ioctl(ctx->fd, VM_SET_CAPABILITY, &vmcap));
+}
+
+int
+vm_assign_pptdev(struct vmctx *ctx, int bus, int slot, int func)
+{
+	struct vm_pptdev pptdev;
+
+	bzero(&pptdev, sizeof(pptdev));
+	pptdev.bus = bus;
+	pptdev.slot = slot;
+	pptdev.func = func;
+
+	return (ioctl(ctx->fd, VM_BIND_PPTDEV, &pptdev));
+}
+
+int
+vm_unassign_pptdev(struct vmctx *ctx, int bus, int slot, int func)
+{
+	struct vm_pptdev pptdev;
+
+	bzero(&pptdev, sizeof(pptdev));
+	pptdev.bus = bus;
+	pptdev.slot = slot;
+	pptdev.func = func;
+
+	return (ioctl(ctx->fd, VM_UNBIND_PPTDEV, &pptdev));
+}
+
+int
+vm_map_pptdev_mmio(struct vmctx *ctx, int bus, int slot, int func,
+		   vm_paddr_t gpa, size_t len, vm_paddr_t hpa)
+{
+	struct vm_pptdev_mmio pptmmio;
+
+	bzero(&pptmmio, sizeof(pptmmio));
+	pptmmio.bus = bus;
+	pptmmio.slot = slot;
+	pptmmio.func = func;
+	pptmmio.gpa = gpa;
+	pptmmio.len = len;
+	pptmmio.hpa = hpa;
+
+	return (ioctl(ctx->fd, VM_MAP_PPTDEV_MMIO, &pptmmio));
+}
+
+int
+vm_setup_pptdev_msi(struct vmctx *ctx, int vcpu, int bus, int slot, int func,
+    uint64_t addr, uint64_t msg, int numvec)
+{
+	struct vm_pptdev_msi pptmsi;
+
+	bzero(&pptmsi, sizeof(pptmsi));
+	pptmsi.vcpu = vcpu;
+	pptmsi.bus = bus;
+	pptmsi.slot = slot;
+	pptmsi.func = func;
+	pptmsi.msg = msg;
+	pptmsi.addr = addr;
+	pptmsi.numvec = numvec;
+
+	return (ioctl(ctx->fd, VM_PPTDEV_MSI, &pptmsi));
+}
+
+int	
+vm_setup_pptdev_msix(struct vmctx *ctx, int vcpu, int bus, int slot, int func,
+    int idx, uint64_t addr, uint64_t msg, uint32_t vector_control)
+{
+	struct vm_pptdev_msix pptmsix;
+
+	bzero(&pptmsix, sizeof(pptmsix));
+	pptmsix.vcpu = vcpu;
+	pptmsix.bus = bus;
+	pptmsix.slot = slot;
+	pptmsix.func = func;
+	pptmsix.idx = idx;
+	pptmsix.msg = msg;
+	pptmsix.addr = addr;
+	pptmsix.vector_control = vector_control;
+
+	return ioctl(ctx->fd, VM_PPTDEV_MSIX, &pptmsix);
+}
+
+#ifdef	__FreeBSD__
+uint64_t *
+vm_get_stats(struct vmctx *ctx, int vcpu, struct timeval *ret_tv,
+	     int *ret_entries)
+{
+	int error;
+
+	static struct vm_stats vmstats;
+
+	vmstats.cpuid = vcpu;
+
+	error = ioctl(ctx->fd, VM_STATS, &vmstats);
+	if (error == 0) {
+		if (ret_entries)
+			*ret_entries = vmstats.num_entries;
+		if (ret_tv)
+			*ret_tv = vmstats.tv;
+		return (vmstats.statbuf);
+	} else
+		return (NULL);
+}
+
+const char *
+vm_get_stat_desc(struct vmctx *ctx, int index)
+{
+	static struct vm_stat_desc statdesc;
+
+	statdesc.index = index;
+	if (ioctl(ctx->fd, VM_STAT_DESC, &statdesc) == 0)
+		return (statdesc.desc);
+	else
+		return (NULL);
+}
+#endif
+
+int
+vm_get_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state *state)
+{
+	int error;
+	struct vm_x2apic x2apic;
+
+	bzero(&x2apic, sizeof(x2apic));
+	x2apic.cpuid = vcpu;
+
+	error = ioctl(ctx->fd, VM_GET_X2APIC_STATE, &x2apic);
+	*state = x2apic.state;
+	return (error);
+}
+
+int
+vm_set_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state state)
+{
+	int error;
+	struct vm_x2apic x2apic;
+
+	bzero(&x2apic, sizeof(x2apic));
+	x2apic.cpuid = vcpu;
+	x2apic.state = state;
+
+	error = ioctl(ctx->fd, VM_SET_X2APIC_STATE, &x2apic);
+
+	return (error);
+}
+
+/*
+ * From Intel Vol 3a:
+ * Table 9-1. IA-32 Processor States Following Power-up, Reset or INIT
+ */
+int
+vcpu_reset(struct vmctx *vmctx, int vcpu)
+{
+	int error;
+	uint64_t rflags, rip, cr0, cr4, zero, desc_base, rdx;
+	uint32_t desc_access, desc_limit;
+	uint16_t sel;
+
+	zero = 0;
+
+	rflags = 0x2;
+	error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RFLAGS, rflags);
+	if (error)
+		goto done;
+
+	rip = 0xfff0;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RIP, rip)) != 0)
+		goto done;
+
+	cr0 = CR0_NE;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR0, cr0)) != 0)
+		goto done;
+
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR3, zero)) != 0)
+		goto done;
+	
+	cr4 = 0;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CR4, cr4)) != 0)
+		goto done;
+
+	/*
+	 * CS: present, r/w, accessed, 16-bit, byte granularity, usable
+	 */
+	desc_base = 0xffff0000;
+	desc_limit = 0xffff;
+	desc_access = 0x0093;
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_CS,
+			    desc_base, desc_limit, desc_access);
+	if (error)
+		goto done;
+
+	sel = 0xf000;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_CS, sel)) != 0)
+		goto done;
+
+	/*
+	 * SS,DS,ES,FS,GS: present, r/w, accessed, 16-bit, byte granularity
+	 */
+	desc_base = 0;
+	desc_limit = 0xffff;
+	desc_access = 0x0093;
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_SS,
+			    desc_base, desc_limit, desc_access);
+	if (error)
+		goto done;
+
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_DS,
+			    desc_base, desc_limit, desc_access);
+	if (error)
+		goto done;
+
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_ES,
+			    desc_base, desc_limit, desc_access);
+	if (error)
+		goto done;
+
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_FS,
+			    desc_base, desc_limit, desc_access);
+	if (error)
+		goto done;
+
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GS,
+			    desc_base, desc_limit, desc_access);
+	if (error)
+		goto done;
+
+	sel = 0;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_SS, sel)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_DS, sel)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_ES, sel)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_FS, sel)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_GS, sel)) != 0)
+		goto done;
+
+	/* General purpose registers */
+	rdx = 0xf00;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RAX, zero)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBX, zero)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RCX, zero)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDX, rdx)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSI, zero)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RDI, zero)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RBP, zero)) != 0)
+		goto done;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_RSP, zero)) != 0)
+		goto done;
+
+	/* GDTR, IDTR */
+	desc_base = 0;
+	desc_limit = 0xffff;
+	desc_access = 0;
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_GDTR,
+			    desc_base, desc_limit, desc_access);
+	if (error != 0)
+		goto done;
+
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_IDTR,
+			    desc_base, desc_limit, desc_access);
+	if (error != 0)
+		goto done;
+
+	/* TR */
+	desc_base = 0;
+	desc_limit = 0xffff;
+	desc_access = 0x0000008b;
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_TR, 0, 0, desc_access);
+	if (error)
+		goto done;
+
+	sel = 0;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_TR, sel)) != 0)
+		goto done;
+
+	/* LDTR */
+	desc_base = 0;
+	desc_limit = 0xffff;
+	desc_access = 0x00000082;
+	error = vm_set_desc(vmctx, vcpu, VM_REG_GUEST_LDTR, desc_base,
+			    desc_limit, desc_access);
+	if (error)
+		goto done;
+
+	sel = 0;
+	if ((error = vm_set_register(vmctx, vcpu, VM_REG_GUEST_LDTR, 0)) != 0)
+		goto done;
+
+	/* XXX cr2, debug registers */
+
+	error = 0;
+done:
+	return (error);
+}
+
+int
+vm_get_gpa_pmap(struct vmctx *ctx, uint64_t gpa, uint64_t *pte, int *num)
+{
+	int error, i;
+	struct vm_gpa_pte gpapte;
+
+	bzero(&gpapte, sizeof(gpapte));
+	gpapte.gpa = gpa;
+
+	error = ioctl(ctx->fd, VM_GET_GPA_PMAP, &gpapte);
+
+	if (error == 0) {
+		*num = gpapte.ptenum;
+		for (i = 0; i < gpapte.ptenum; i++)
+			pte[i] = gpapte.pte[i];
+	}
+
+	return (error);
+}
+
+int
+vm_get_hpet_capabilities(struct vmctx *ctx, uint32_t *capabilities)
+{
+	int error;
+	struct vm_hpet_cap cap;
+
+	bzero(&cap, sizeof(struct vm_hpet_cap));
+	error = ioctl(ctx->fd, VM_GET_HPET_CAPABILITIES, &cap);
+	if (capabilities != NULL)
+		*capabilities = cap.capabilities;
+	return (error);
+}
+
+static int
+gla2gpa(struct vmctx *ctx, int vcpu, struct vm_guest_paging *paging,
+    uint64_t gla, int prot, int *fault, uint64_t *gpa)
+{
+	struct vm_gla2gpa gg;
+	int error;
+
+	bzero(&gg, sizeof(struct vm_gla2gpa));
+	gg.vcpuid = vcpu;
+	gg.prot = prot;
+	gg.gla = gla;
+	gg.paging = *paging;
+
+	error = ioctl(ctx->fd, VM_GLA2GPA, &gg);
+	if (error == 0) {
+		*fault = gg.fault;
+		*gpa = gg.gpa;
+	}
+	return (error);
+}
+
+int
+vm_gla2gpa(struct vmctx *ctx, int vcpu, struct vm_guest_paging *paging,
+    uint64_t gla, int prot, uint64_t *gpa)
+{
+	int error, fault;
+
+	error = gla2gpa(ctx, vcpu, paging, gla, prot, &fault, gpa);
+	if (fault)
+		error = fault;
+	return (error);
+}
+
+#ifndef min
+#define	min(a,b)	(((a) < (b)) ? (a) : (b))
+#endif
+
+int
+vm_copy_setup(struct vmctx *ctx, int vcpu, struct vm_guest_paging *paging,
+    uint64_t gla, size_t len, int prot, struct iovec *iov, int iovcnt)
+{
+	void *va;
+	uint64_t gpa;
+	int error, fault, i, n, off;
+
+	for (i = 0; i < iovcnt; i++) {
+		iov[i].iov_base = 0;
+		iov[i].iov_len = 0;
+	}
+
+	while (len) {
+		assert(iovcnt > 0);
+		error = gla2gpa(ctx, vcpu, paging, gla, prot, &fault, &gpa);
+		if (error)
+			return (-1);
+		if (fault)
+			return (1);
+
+		off = gpa & PAGE_MASK;
+		n = min(len, PAGE_SIZE - off);
+
+		va = vm_map_gpa(ctx, gpa, n);
+		if (va == NULL)
+			return (-1);
+
+		iov->iov_base = va;
+		iov->iov_len = n;
+		iov++;
+		iovcnt--;
+
+		gla += n;
+		len -= n;
+	}
+	return (0);
+}
+
+void
+vm_copy_teardown(struct vmctx *ctx, int vcpu, struct iovec *iov, int iovcnt)
+{
+
+	return;
+}
+
+void
+vm_copyin(struct vmctx *ctx, int vcpu, struct iovec *iov, void *vp, size_t len)
+{
+	const char *src;
+	char *dst;
+	size_t n;
+
+	dst = vp;
+	while (len) {
+		assert(iov->iov_len);
+		n = min(len, iov->iov_len);
+		src = iov->iov_base;
+		bcopy(src, dst, n);
+
+		iov++;
+		dst += n;
+		len -= n;
+	}
+}
+
+void
+vm_copyout(struct vmctx *ctx, int vcpu, const void *vp, struct iovec *iov,
+    size_t len)
+{
+	const char *src;
+	char *dst;
+	size_t n;
+
+	src = vp;
+	while (len) {
+		assert(iov->iov_len);
+		n = min(len, iov->iov_len);
+		dst = iov->iov_base;
+		bcopy(src, dst, n);
+
+		iov++;
+		src += n;
+		len -= n;
+	}
+}
+
+int
+vm_activate_cpu(struct vmctx *ctx, int vcpu)
+{
+	struct vm_activate_cpu ac;
+	int error;
+
+	bzero(&ac, sizeof(struct vm_activate_cpu));
+	ac.vcpuid = vcpu;
+	error = ioctl(ctx->fd, VM_ACTIVATE_CPU, &ac);
+	return (error);
+}
+
+int
+vm_restart_instruction(void *arg, int vcpu)
+{
+	struct vmctx *ctx = arg;
+
+	return (ioctl(ctx->fd, VM_RESTART_INSTRUCTION, &vcpu));
+}
diff --git a/usr/src/lib/libvmmapi/common/vmmapi.h b/usr/src/lib/libvmmapi/common/vmmapi.h
new file mode 100644
index 0000000000..d7eb67aa58
--- /dev/null
+++ b/usr/src/lib/libvmmapi/common/vmmapi.h
@@ -0,0 +1,159 @@
+/*-
+ * 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: head/lib/libvmmapi/vmmapi.h 280929 2015-04-01 00:15:31Z tychon $
+ */
+/*
+ * This file and its contents are supplied under the terms of the
+ * Common Development and Distribution License ("CDDL"), version 1.0.
+ * You may only use this file in accordance with the terms of version
+ * 1.0 of the CDDL.
+ *
+ * A full copy of the text of the CDDL should have accompanied this
+ * source.  A copy of the CDDL is also available via the Internet at
+ * http://www.illumos.org/license/CDDL.
+ *
+ * Copyright 2015 Pluribus Networks Inc.
+ */
+
+#ifndef _VMMAPI_H_
+#define	_VMMAPI_H_
+
+#include <sys/param.h>
+
+struct iovec;
+struct vmctx;
+enum x2apic_state;
+
+/*
+ * Different styles of mapping the memory assigned to a VM into the address
+ * space of the controlling process.
+ */
+enum vm_mmap_style {
+	VM_MMAP_NONE,		/* no mapping */
+	VM_MMAP_ALL,		/* fully and statically mapped */
+	VM_MMAP_SPARSE,		/* mappings created on-demand */
+};
+
+int	vm_create(const char *name);
+struct vmctx *vm_open(const char *name);
+int	vm_destroy(struct vmctx *ctx);
+int	vm_parse_memsize(const char *optarg, size_t *memsize);
+int	vm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa, size_t *ret_len,
+			  int *wired);
+int	vm_setup_memory(struct vmctx *ctx, size_t len, enum vm_mmap_style s);
+int	vm_setup_rom(struct vmctx *ctx, vm_paddr_t gpa, size_t len);
+void	*vm_map_gpa(struct vmctx *ctx, vm_paddr_t gaddr, size_t len);
+int	vm_gla2gpa(struct vmctx *, int vcpuid, struct vm_guest_paging *paging,
+		   uint64_t gla, int prot, uint64_t *gpa);
+uint32_t vm_get_lowmem_limit(struct vmctx *ctx);
+void	vm_set_lowmem_limit(struct vmctx *ctx, uint32_t limit);
+size_t	vm_get_lowmem_size(struct vmctx *ctx);
+size_t	vm_get_highmem_size(struct vmctx *ctx);
+int	vm_set_desc(struct vmctx *ctx, int vcpu, int reg,
+		    uint64_t base, uint32_t limit, uint32_t access);
+int	vm_get_desc(struct vmctx *ctx, int vcpu, int reg,
+		    uint64_t *base, uint32_t *limit, uint32_t *access);
+int	vm_get_seg_desc(struct vmctx *ctx, int vcpu, int reg,
+			struct seg_desc *seg_desc);
+int	vm_set_register(struct vmctx *ctx, int vcpu, int reg, uint64_t val);
+int	vm_get_register(struct vmctx *ctx, int vcpu, int reg, uint64_t *retval);
+int	vm_run(struct vmctx *ctx, int vcpu, struct vm_exit *ret_vmexit);
+int	vm_apicid2vcpu(struct vmctx *ctx, int apicid);
+int	vm_inject_exception(struct vmctx *ctx, int vcpu, int vector,
+    int errcode_valid, uint32_t errcode, int restart_instruction);
+int	vm_lapic_irq(struct vmctx *ctx, int vcpu, int vector);
+int	vm_lapic_local_irq(struct vmctx *ctx, int vcpu, int vector);
+int	vm_lapic_msi(struct vmctx *ctx, uint64_t addr, uint64_t msg);
+int	vm_ioapic_assert_irq(struct vmctx *ctx, int irq);
+int	vm_ioapic_deassert_irq(struct vmctx *ctx, int irq);
+int	vm_ioapic_pulse_irq(struct vmctx *ctx, int irq);
+int	vm_ioapic_pincount(struct vmctx *ctx, int *pincount);
+int	vm_isa_assert_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq);
+int	vm_isa_deassert_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq);
+int	vm_isa_pulse_irq(struct vmctx *ctx, int atpic_irq, int ioapic_irq);
+int	vm_isa_set_irq_trigger(struct vmctx *ctx, int atpic_irq,
+	    enum vm_intr_trigger trigger);
+int	vm_inject_nmi(struct vmctx *ctx, int vcpu);
+int	vm_capability_name2type(const char *capname);
+const char *vm_capability_type2name(int type);
+int	vm_get_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap,
+			  int *retval);
+int	vm_set_capability(struct vmctx *ctx, int vcpu, enum vm_cap_type cap,
+			  int val);
+int	vm_assign_pptdev(struct vmctx *ctx, int bus, int slot, int func);
+int	vm_unassign_pptdev(struct vmctx *ctx, int bus, int slot, int func);
+int	vm_map_pptdev_mmio(struct vmctx *ctx, int bus, int slot, int func,
+			   vm_paddr_t gpa, size_t len, vm_paddr_t hpa);
+int	vm_setup_pptdev_msi(struct vmctx *ctx, int vcpu, int bus, int slot,
+	    int func, uint64_t addr, uint64_t msg, int numvec);
+int	vm_setup_pptdev_msix(struct vmctx *ctx, int vcpu, int bus, int slot,
+	    int func, int idx, uint64_t addr, uint64_t msg,
+	    uint32_t vector_control);
+
+/*
+ * Return a pointer to the statistics buffer. Note that this is not MT-safe.
+ */
+uint64_t *vm_get_stats(struct vmctx *ctx, int vcpu, struct timeval *ret_tv,
+		       int *ret_entries);
+const char *vm_get_stat_desc(struct vmctx *ctx, int index);
+
+int	vm_get_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state *s);
+int	vm_set_x2apic_state(struct vmctx *ctx, int vcpu, enum x2apic_state s);
+
+int	vm_get_hpet_capabilities(struct vmctx *ctx, uint32_t *capabilities);
+
+/*
+ * Translate the GLA range [gla,gla+len) into GPA segments in 'iov'.
+ * The 'iovcnt' should be big enough to accomodate all GPA segments.
+ * Returns 0 on success, 1 on a guest fault condition and -1 otherwise.
+ */
+int	vm_copy_setup(struct vmctx *ctx, int vcpu, struct vm_guest_paging *pg,
+	    uint64_t gla, size_t len, int prot, struct iovec *iov, int iovcnt);
+void	vm_copyin(struct vmctx *ctx, int vcpu, struct iovec *guest_iov,
+	    void *host_dst, size_t len);
+void	vm_copyout(struct vmctx *ctx, int vcpu, const void *host_src,
+	    struct iovec *guest_iov, size_t len);
+void	vm_copy_teardown(struct vmctx *ctx, int vcpu, struct iovec *iov,
+	    int iovcnt);
+
+/* Reset vcpu register state */
+int	vcpu_reset(struct vmctx *ctx, int vcpu);
+
+int	vm_activate_cpu(struct vmctx *ctx, int vcpu);
+
+#ifdef	__FreeBSD__
+/*
+ * FreeBSD specific APIs
+ */
+int	vm_setup_freebsd_registers(struct vmctx *ctx, int vcpu,
+				uint64_t rip, uint64_t cr3, uint64_t gdtbase,
+				uint64_t rsp);
+int	vm_setup_freebsd_registers_i386(struct vmctx *vmctx, int vcpu,
+					uint32_t eip, uint32_t gdtbase,
+					uint32_t esp);
+void	vm_setup_freebsd_gdt(uint64_t *gdtr);
+#endif
+#endif	/* _VMMAPI_H_ */