957 lines
20 KiB
C
957 lines
20 KiB
C
/*-
|
|
* Copyright (c) 2011 NetApp, Inc.
|
|
* Copyright (c) 2015 xhyve developers
|
|
* 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 <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <err.h>
|
|
#include <libgen.h>
|
|
#include <unistd.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <pthread.h>
|
|
#include <sysexits.h>
|
|
#include <ctype.h>
|
|
#include <inttypes.h>
|
|
#include <sys/types.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/time.h>
|
|
#include <sys/param.h>
|
|
|
|
#include <xhyve/support/misc.h>
|
|
#include <xhyve/support/atomic.h>
|
|
#include <xhyve/support/segments.h>
|
|
#include <xhyve/support/cpuset.h>
|
|
#include <xhyve/vmm/vmm_api.h>
|
|
|
|
#include <xhyve/xhyve.h>
|
|
#include <xhyve/acpi.h>
|
|
#include <xhyve/inout.h>
|
|
#include <xhyve/dbgport.h>
|
|
#include <xhyve/ioapic.h>
|
|
#include <xhyve/mem.h>
|
|
#include <xhyve/mevent.h>
|
|
#include <xhyve/mptbl.h>
|
|
#include <xhyve/pci_emul.h>
|
|
#include <xhyve/pci_irq.h>
|
|
#include <xhyve/pci_lpc.h>
|
|
#include <xhyve/smbiostbl.h>
|
|
#include <xhyve/xmsr.h>
|
|
#include <xhyve/rtc.h>
|
|
|
|
#include <xhyve/firmware/kexec.h>
|
|
#include <xhyve/firmware/fbsd.h>
|
|
|
|
#define GUEST_NIO_PORT 0x488 /* guest upcalls via i/o port */
|
|
|
|
#define MB (1024UL * 1024)
|
|
|
|
typedef int (*vmexit_handler_t)(struct vm_exit *, int *vcpu);
|
|
extern int vmexit_task_switch(struct vm_exit *, int *vcpu);
|
|
|
|
char *vmname = "vm";
|
|
|
|
int guest_ncpus;
|
|
int print_mac;
|
|
char *guest_uuid_str;
|
|
|
|
static int guest_vmexit_on_hlt, guest_vmexit_on_pause;
|
|
static int virtio_msix = 1;
|
|
static int x2apic_mode = 0; /* default is xAPIC */
|
|
|
|
static int strictio;
|
|
static int strictmsr = 1;
|
|
|
|
static int acpi;
|
|
|
|
static char *progname;
|
|
static const int BSP = 0;
|
|
|
|
static cpuset_t cpumask;
|
|
|
|
static void vcpu_loop(int vcpu, uint64_t rip);
|
|
|
|
static struct vm_exit vmexit[VM_MAXCPU];
|
|
|
|
static struct bhyvestats {
|
|
uint64_t vmexit_bogus;
|
|
uint64_t vmexit_bogus_switch;
|
|
uint64_t vmexit_hlt;
|
|
uint64_t vmexit_pause;
|
|
uint64_t vmexit_mtrap;
|
|
uint64_t vmexit_inst_emul;
|
|
uint64_t cpu_switch_rotate;
|
|
uint64_t cpu_switch_direct;
|
|
} stats;
|
|
|
|
#pragma clang diagnostic push
|
|
#pragma clang diagnostic ignored "-Wpadded"
|
|
static struct mt_vmm_info {
|
|
pthread_t mt_thr;
|
|
int mt_vcpu;
|
|
} mt_vmm_info[VM_MAXCPU];
|
|
#pragma clang diagnostic pop
|
|
|
|
static uint64_t (*fw_func)(void);
|
|
|
|
__attribute__ ((noreturn)) static void
|
|
usage(int code)
|
|
{
|
|
|
|
fprintf(stderr,
|
|
"Usage: %s [-behuwxMACHPWY] [-c vcpus] [-g <gdb port>] [-l <lpc>]\n"
|
|
" %*s [-m mem] [-p vcpu:hostcpu] [-s <pci>] [-U uuid] -f <fw>\n"
|
|
" -A: create ACPI tables\n"
|
|
" -c: # cpus (default 1)\n"
|
|
" -C: include guest memory in core file\n"
|
|
" -e: exit on unhandled I/O access\n"
|
|
" -f: firmware\n"
|
|
" -g: gdb port\n"
|
|
" -h: help\n"
|
|
" -H: vmexit from the guest on hlt\n"
|
|
" -l: LPC device configuration\n"
|
|
" -m: memory size in MB, may be suffixed with one of K, M, G or T\n"
|
|
" -M: print MAC address and exit if using vmnet\n"
|
|
" -p: pin 'vcpu' to 'hostcpu'\n"
|
|
" -P: vmexit from the guest on pause\n"
|
|
" -s: <slot,driver,configinfo> PCI slot config\n"
|
|
" -u: RTC keeps UTC time\n"
|
|
" -U: uuid\n"
|
|
" -v: show build version\n"
|
|
" -w: ignore unimplemented MSRs\n"
|
|
" -W: force virtio to use single-vector MSI\n"
|
|
" -x: local apic is in x2APIC mode\n"
|
|
" -Y: disable MPtable generation\n",
|
|
progname, (int)strlen(progname), "");
|
|
|
|
exit(code);
|
|
}
|
|
|
|
__attribute__ ((noreturn)) static void
|
|
show_version()
|
|
{
|
|
fprintf(stderr, "%s: %s\n\n%s\n",progname, VERSION,
|
|
"xhyve is a port of FreeBSD's bhyve hypervisor to OS X that\n"
|
|
"works entirely in userspace and has no other dependencies.\n\n"
|
|
"Homepage: https://github.com/mist64/xhyve\n"
|
|
"License: BSD\n");
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
xh_vm_inject_fault(int vcpu, int vector, int errcode_valid,
|
|
uint32_t errcode)
|
|
{
|
|
int error, restart_instruction;
|
|
|
|
restart_instruction = 1;
|
|
|
|
error = xh_vm_inject_exception(vcpu, vector, errcode_valid, errcode,
|
|
restart_instruction);
|
|
assert(error == 0);
|
|
}
|
|
|
|
void *
|
|
paddr_guest2host(uintptr_t gaddr, size_t len)
|
|
{
|
|
return (xh_vm_map_gpa(gaddr, len));
|
|
}
|
|
|
|
int
|
|
fbsdrun_vmexit_on_pause(void)
|
|
{
|
|
return (guest_vmexit_on_pause);
|
|
}
|
|
|
|
int
|
|
fbsdrun_vmexit_on_hlt(void)
|
|
{
|
|
return (guest_vmexit_on_hlt);
|
|
}
|
|
|
|
int
|
|
fbsdrun_virtio_msix(void)
|
|
{
|
|
return (virtio_msix);
|
|
}
|
|
|
|
static void
|
|
spinup_ap_realmode(int newcpu, uint64_t *rip)
|
|
{
|
|
int vector, error;
|
|
uint16_t cs;
|
|
uint64_t desc_base;
|
|
uint32_t desc_limit, desc_access;
|
|
|
|
vector = (int) (*rip >> XHYVE_PAGE_SHIFT);
|
|
*rip = 0;
|
|
|
|
/*
|
|
* Update the %cs and %rip of the guest so that it starts
|
|
* executing real mode code at at 'vector << 12'.
|
|
*/
|
|
error = xh_vm_set_register(newcpu, VM_REG_GUEST_RIP, *rip);
|
|
assert(error == 0);
|
|
|
|
error = xh_vm_get_desc(newcpu, VM_REG_GUEST_CS, &desc_base, &desc_limit,
|
|
&desc_access);
|
|
assert(error == 0);
|
|
|
|
desc_base = (uint64_t) (vector << XHYVE_PAGE_SHIFT);
|
|
error = xh_vm_set_desc(newcpu, VM_REG_GUEST_CS, desc_base, desc_limit,
|
|
desc_access);
|
|
assert(error == 0);
|
|
|
|
cs = (uint16_t) ((vector << XHYVE_PAGE_SHIFT) >> 4);
|
|
error = xh_vm_set_register(newcpu, VM_REG_GUEST_CS, cs);
|
|
assert(error == 0);
|
|
}
|
|
|
|
static void *
|
|
vcpu_thread(void *param)
|
|
{
|
|
struct mt_vmm_info *mtp;
|
|
uint64_t rip_entry;
|
|
int vcpu;
|
|
int error;
|
|
|
|
mtp = param;
|
|
vcpu = mtp->mt_vcpu;
|
|
rip_entry = 0xfff0;
|
|
|
|
error = xh_vcpu_create(vcpu);
|
|
assert(error == 0);
|
|
|
|
vcpu_set_capabilities(vcpu);
|
|
|
|
error = xh_vcpu_reset(vcpu);
|
|
assert(error == 0);
|
|
|
|
if (vcpu == BSP) {
|
|
rip_entry = fw_func();
|
|
} else {
|
|
rip_entry = vmexit[vcpu].rip;
|
|
spinup_ap_realmode(vcpu, &rip_entry);
|
|
}
|
|
|
|
vmexit[vcpu].rip = rip_entry;
|
|
vmexit[vcpu].inst_length = 0;
|
|
|
|
vcpu_loop(vcpu, vmexit[vcpu].rip);
|
|
|
|
/* not reached */
|
|
exit(1);
|
|
return (NULL);
|
|
}
|
|
|
|
void
|
|
vcpu_add(int fromcpu, int newcpu, uint64_t rip)
|
|
{
|
|
int error;
|
|
|
|
assert(fromcpu == BSP);
|
|
|
|
/*
|
|
* The 'newcpu' must be activated in the context of 'fromcpu'. If
|
|
* vm_activate_cpu() is delayed until newcpu's pthread starts running
|
|
* then vmm.ko is out-of-sync with bhyve and this can create a race
|
|
* with vm_suspend().
|
|
*/
|
|
error = xh_vm_activate_cpu(newcpu);
|
|
assert(error == 0);
|
|
|
|
CPU_SET_ATOMIC(((unsigned) newcpu), &cpumask);
|
|
|
|
mt_vmm_info[newcpu].mt_vcpu = newcpu;
|
|
|
|
vmexit[newcpu].rip = rip;
|
|
|
|
error = pthread_create(&mt_vmm_info[newcpu].mt_thr, NULL, vcpu_thread,
|
|
&mt_vmm_info[newcpu]);
|
|
|
|
assert(error == 0);
|
|
}
|
|
|
|
static int
|
|
vcpu_delete(int vcpu)
|
|
{
|
|
if (!CPU_ISSET(((unsigned) vcpu), &cpumask)) {
|
|
fprintf(stderr, "Attempting to delete unknown cpu %d\n", vcpu);
|
|
exit(1);
|
|
}
|
|
|
|
CPU_CLR_ATOMIC(((unsigned) vcpu), &cpumask);
|
|
return (CPU_EMPTY(&cpumask));
|
|
}
|
|
|
|
static int
|
|
vmexit_handle_notify(UNUSED struct vm_exit *vme, UNUSED int *pvcpu,
|
|
UNUSED uint32_t eax)
|
|
{
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static int
|
|
vmexit_inout(struct vm_exit *vme, int *pvcpu)
|
|
{
|
|
int error;
|
|
int bytes, port, in, out, string;
|
|
int vcpu;
|
|
|
|
vcpu = *pvcpu;
|
|
|
|
port = vme->u.inout.port;
|
|
bytes = vme->u.inout.bytes;
|
|
string = vme->u.inout.string;
|
|
in = vme->u.inout.in;
|
|
out = !in;
|
|
|
|
/* Extra-special case of host notifications */
|
|
if (out && port == GUEST_NIO_PORT) {
|
|
error = vmexit_handle_notify(vme, pvcpu, vme->u.inout.eax);
|
|
return (error);
|
|
}
|
|
|
|
error = emulate_inout(vcpu, vme, strictio);
|
|
if (error) {
|
|
fprintf(stderr, "Unhandled %s%c 0x%04x at 0x%llx\n",
|
|
in ? "in" : "out",
|
|
bytes == 1 ? 'b' : (bytes == 2 ? 'w' : 'l'),
|
|
port, vmexit->rip);
|
|
return (VMEXIT_ABORT);
|
|
} else {
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
}
|
|
|
|
static int
|
|
vmexit_rdmsr(struct vm_exit *vme, int *pvcpu)
|
|
{
|
|
uint64_t val;
|
|
uint32_t eax, edx;
|
|
int error;
|
|
|
|
val = 0;
|
|
error = emulate_rdmsr(*pvcpu, vme->u.msr.code, &val);
|
|
if (error != 0) {
|
|
fprintf(stderr, "rdmsr to register %#x on vcpu %d\n",
|
|
vme->u.msr.code, *pvcpu);
|
|
if (strictmsr) {
|
|
vm_inject_gp(*pvcpu);
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
}
|
|
|
|
eax = (uint32_t) val;
|
|
error = xh_vm_set_register(*pvcpu, VM_REG_GUEST_RAX, eax);
|
|
assert(error == 0);
|
|
|
|
edx = val >> 32;
|
|
error = xh_vm_set_register(*pvcpu, VM_REG_GUEST_RDX, edx);
|
|
assert(error == 0);
|
|
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static int
|
|
vmexit_wrmsr(struct vm_exit *vme, int *pvcpu)
|
|
{
|
|
int error;
|
|
|
|
error = emulate_wrmsr(*pvcpu, vme->u.msr.code, vme->u.msr.wval);
|
|
if (error != 0) {
|
|
fprintf(stderr, "wrmsr to register %#x(%#llx) on vcpu %d\n",
|
|
vme->u.msr.code, vme->u.msr.wval, *pvcpu);
|
|
if (strictmsr) {
|
|
vm_inject_gp(*pvcpu);
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
}
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static int
|
|
vmexit_spinup_ap(struct vm_exit *vme, int *pvcpu)
|
|
{
|
|
assert(vme->u.spinup_ap.vcpu != 0);
|
|
assert(vme->u.spinup_ap.vcpu < guest_ncpus);
|
|
|
|
vcpu_add(*pvcpu, vme->u.spinup_ap.vcpu, vme->u.spinup_ap.rip);
|
|
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static int
|
|
vmexit_vmx(struct vm_exit *vme, int *pvcpu)
|
|
{
|
|
fprintf(stderr, "vm exit[%d]\n", *pvcpu);
|
|
fprintf(stderr, "\treason\t\tVMX\n");
|
|
fprintf(stderr, "\trip\t\t0x%016llx\n", vme->rip);
|
|
fprintf(stderr, "\tinst_length\t%d\n", vme->inst_length);
|
|
fprintf(stderr, "\tstatus\t\t%d\n", vme->u.vmx.status);
|
|
fprintf(stderr, "\texit_reason\t%u\n", vme->u.vmx.exit_reason);
|
|
fprintf(stderr, "\tqualification\t0x%016llx\n",
|
|
vme->u.vmx.exit_qualification);
|
|
fprintf(stderr, "\tinst_type\t\t%d\n", vme->u.vmx.inst_type);
|
|
fprintf(stderr, "\tinst_error\t\t%d\n", vme->u.vmx.inst_error);
|
|
return (VMEXIT_ABORT);
|
|
}
|
|
|
|
static int
|
|
vmexit_bogus(struct vm_exit *vme, UNUSED int *pvcpu)
|
|
{
|
|
assert(vme->inst_length == 0);
|
|
|
|
stats.vmexit_bogus++;
|
|
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static int
|
|
vmexit_hlt(UNUSED struct vm_exit *vme, UNUSED int *pvcpu)
|
|
{
|
|
stats.vmexit_hlt++;
|
|
|
|
/*
|
|
* Just continue execution with the next instruction. We use
|
|
* the HLT VM exit as a way to be friendly with the host
|
|
* scheduler.
|
|
*/
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static int
|
|
vmexit_pause(UNUSED struct vm_exit *vme, UNUSED int *pvcpu)
|
|
{
|
|
stats.vmexit_pause++;
|
|
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static int
|
|
vmexit_mtrap(struct vm_exit *vme, UNUSED int *pvcpu)
|
|
{
|
|
assert(vme->inst_length == 0);
|
|
|
|
stats.vmexit_mtrap++;
|
|
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static int
|
|
vmexit_inst_emul(struct vm_exit *vme, int *pvcpu)
|
|
{
|
|
int err, i;
|
|
struct vie *vie;
|
|
|
|
stats.vmexit_inst_emul++;
|
|
|
|
vie = &vme->u.inst_emul.vie;
|
|
err = emulate_mem(*pvcpu, vme->u.inst_emul.gpa, vie,
|
|
&vme->u.inst_emul.paging);
|
|
|
|
if (err) {
|
|
if (err == ESRCH) {
|
|
fprintf(stderr, "Unhandled memory access to 0x%llx\n",
|
|
vme->u.inst_emul.gpa);
|
|
}
|
|
|
|
fprintf(stderr, "Failed to emulate instruction [");
|
|
for (i = 0; i < vie->num_valid; i++) {
|
|
fprintf(stderr, "0x%02x%s", vie->inst[i],
|
|
i != (vie->num_valid - 1) ? " " : "");
|
|
}
|
|
fprintf(stderr, "] at 0x%llx\n", vme->rip);
|
|
return (VMEXIT_ABORT);
|
|
}
|
|
|
|
return (VMEXIT_CONTINUE);
|
|
}
|
|
|
|
static pthread_mutex_t resetcpu_mtx = PTHREAD_MUTEX_INITIALIZER;
|
|
static pthread_cond_t resetcpu_cond = PTHREAD_COND_INITIALIZER;
|
|
|
|
static int
|
|
vmexit_suspend(struct vm_exit *vme, int *pvcpu)
|
|
{
|
|
enum vm_suspend_how how;
|
|
|
|
how = vme->u.suspended.how;
|
|
|
|
vcpu_delete(*pvcpu);
|
|
|
|
if (*pvcpu != BSP) {
|
|
pthread_mutex_lock(&resetcpu_mtx);
|
|
pthread_cond_signal(&resetcpu_cond);
|
|
pthread_mutex_unlock(&resetcpu_mtx);
|
|
pthread_exit(NULL);
|
|
}
|
|
|
|
pthread_mutex_lock(&resetcpu_mtx);
|
|
while (!CPU_EMPTY(&cpumask)) {
|
|
pthread_cond_wait(&resetcpu_cond, &resetcpu_mtx);
|
|
}
|
|
pthread_mutex_unlock(&resetcpu_mtx);
|
|
|
|
switch ((int) (how)) {
|
|
case VM_SUSPEND_RESET:
|
|
exit(0);
|
|
case VM_SUSPEND_POWEROFF:
|
|
exit(1);
|
|
case VM_SUSPEND_HALT:
|
|
exit(2);
|
|
case VM_SUSPEND_TRIPLEFAULT:
|
|
exit(3);
|
|
default:
|
|
fprintf(stderr, "vmexit_suspend: invalid reason %d\n", how);
|
|
exit(100);
|
|
}
|
|
}
|
|
|
|
static vmexit_handler_t handler[VM_EXITCODE_MAX] = {
|
|
[VM_EXITCODE_INOUT] = vmexit_inout,
|
|
[VM_EXITCODE_INOUT_STR] = vmexit_inout,
|
|
[VM_EXITCODE_VMX] = vmexit_vmx,
|
|
[VM_EXITCODE_BOGUS] = vmexit_bogus,
|
|
[VM_EXITCODE_RDMSR] = vmexit_rdmsr,
|
|
[VM_EXITCODE_WRMSR] = vmexit_wrmsr,
|
|
[VM_EXITCODE_MTRAP] = vmexit_mtrap,
|
|
[VM_EXITCODE_INST_EMUL] = vmexit_inst_emul,
|
|
[VM_EXITCODE_SPINUP_AP] = vmexit_spinup_ap,
|
|
[VM_EXITCODE_SUSPENDED] = vmexit_suspend,
|
|
[VM_EXITCODE_TASK_SWITCH] = vmexit_task_switch,
|
|
};
|
|
|
|
void
|
|
vcpu_set_capabilities(int cpu)
|
|
{
|
|
int err, tmp;
|
|
|
|
if (fbsdrun_vmexit_on_hlt()) {
|
|
err = xh_vm_get_capability(cpu, VM_CAP_HALT_EXIT, &tmp);
|
|
if (err < 0) {
|
|
fprintf(stderr, "VM exit on HLT not supported\n");
|
|
exit(1);
|
|
}
|
|
xh_vm_set_capability(cpu, VM_CAP_HALT_EXIT, 1);
|
|
if (cpu == BSP)
|
|
handler[VM_EXITCODE_HLT] = vmexit_hlt;
|
|
}
|
|
|
|
if (fbsdrun_vmexit_on_pause()) {
|
|
/*
|
|
* pause exit support required for this mode
|
|
*/
|
|
err = xh_vm_get_capability(cpu, VM_CAP_PAUSE_EXIT, &tmp);
|
|
if (err < 0) {
|
|
fprintf(stderr,
|
|
"SMP mux requested, no pause support\n");
|
|
exit(1);
|
|
}
|
|
xh_vm_set_capability(cpu, VM_CAP_PAUSE_EXIT, 1);
|
|
if (cpu == BSP)
|
|
handler[VM_EXITCODE_PAUSE] = vmexit_pause;
|
|
}
|
|
|
|
if (x2apic_mode)
|
|
err = xh_vm_set_x2apic_state(cpu, X2APIC_ENABLED);
|
|
else
|
|
err = xh_vm_set_x2apic_state(cpu, X2APIC_DISABLED);
|
|
|
|
if (err) {
|
|
fprintf(stderr, "Unable to set x2apic state (%d)\n", err);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
static void
|
|
vcpu_loop(int vcpu, uint64_t startrip)
|
|
{
|
|
int error, rc, prevcpu;
|
|
enum vm_exitcode exitcode;
|
|
cpuset_t active_cpus;
|
|
|
|
error = xh_vm_active_cpus(&active_cpus);
|
|
assert(CPU_ISSET(((unsigned) vcpu), &active_cpus));
|
|
|
|
error = xh_vm_set_register(vcpu, VM_REG_GUEST_RIP, startrip);
|
|
assert(error == 0);
|
|
|
|
while (1) {
|
|
error = xh_vm_run(vcpu, &vmexit[vcpu]);
|
|
if (error != 0)
|
|
break;
|
|
|
|
prevcpu = vcpu;
|
|
|
|
exitcode = vmexit[vcpu].exitcode;
|
|
if (exitcode >= VM_EXITCODE_MAX || handler[exitcode] == NULL) {
|
|
fprintf(stderr, "vcpu_loop: unexpected exitcode 0x%x\n",
|
|
exitcode);
|
|
exit(1);
|
|
}
|
|
|
|
rc = (*handler[exitcode])(&vmexit[vcpu], &vcpu);
|
|
|
|
switch (rc) {
|
|
case VMEXIT_CONTINUE:
|
|
break;
|
|
case VMEXIT_ABORT:
|
|
abort();
|
|
default:
|
|
exit(1);
|
|
}
|
|
}
|
|
fprintf(stderr, "vm_run error %d, errno %d\n", error, errno);
|
|
}
|
|
|
|
static int
|
|
num_vcpus_allowed(void)
|
|
{
|
|
return (VM_MAXCPU);
|
|
}
|
|
|
|
static int
|
|
expand_number(const char *buf, uint64_t *num)
|
|
{
|
|
char *endptr;
|
|
uintmax_t umaxval;
|
|
uint64_t number;
|
|
unsigned shift;
|
|
int serrno;
|
|
|
|
serrno = errno;
|
|
errno = 0;
|
|
umaxval = strtoumax(buf, &endptr, 0);
|
|
if (umaxval > UINT64_MAX)
|
|
errno = ERANGE;
|
|
if (errno != 0)
|
|
return (-1);
|
|
errno = serrno;
|
|
number = umaxval;
|
|
|
|
switch (tolower((unsigned char)*endptr)) {
|
|
case 'e':
|
|
shift = 60;
|
|
break;
|
|
case 'p':
|
|
shift = 50;
|
|
break;
|
|
case 't':
|
|
shift = 40;
|
|
break;
|
|
case 'g':
|
|
shift = 30;
|
|
break;
|
|
case 'm':
|
|
shift = 20;
|
|
break;
|
|
case 'k':
|
|
shift = 10;
|
|
break;
|
|
case 'b':
|
|
case '\0': /* No unit. */
|
|
*num = number;
|
|
return (0);
|
|
default:
|
|
/* Unrecognized unit. */
|
|
errno = EINVAL;
|
|
return (-1);
|
|
}
|
|
|
|
if ((number << shift) >> shift != number) {
|
|
/* Overflow */
|
|
errno = ERANGE;
|
|
return (-1);
|
|
}
|
|
*num = number << shift;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
parse_memsize(const char *opt, size_t *ret_memsize)
|
|
{
|
|
char *endptr;
|
|
size_t optval;
|
|
int error;
|
|
|
|
optval = strtoul(opt, &endptr, 0);
|
|
if (*opt != '\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(opt, ((uint64_t *) ret_memsize));
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
firmware_parse(const char *opt) {
|
|
char *fw, *opt1, *opt2, *opt3, *cp;
|
|
|
|
fw = strdup(opt);
|
|
|
|
if (strncmp(fw, "kexec", strlen("kexec")) == 0) {
|
|
fw_func = kexec;
|
|
} else if (strncmp(fw, "fbsd", strlen("fbsd")) == 0) {
|
|
fw_func = fbsd_load;
|
|
} else {
|
|
goto fail;
|
|
}
|
|
|
|
if ((cp = strchr(fw, ',')) != NULL) {
|
|
*cp = '\0';
|
|
opt1 = cp + 1;
|
|
} else {
|
|
goto fail;
|
|
}
|
|
|
|
if ((cp = strchr(opt1, ',')) != NULL) {
|
|
*cp = '\0';
|
|
opt2 = cp + 1;
|
|
} else {
|
|
goto fail;
|
|
}
|
|
|
|
if ((cp = strchr(opt2, ',')) != NULL) {
|
|
*cp = '\0';
|
|
opt3 = cp + 1;
|
|
} else {
|
|
goto fail;
|
|
}
|
|
|
|
opt2 = strlen(opt2) ? opt2 : NULL;
|
|
opt3 = strlen(opt3) ? opt3 : NULL;
|
|
|
|
if (fw_func == kexec) {
|
|
kexec_init(opt1, opt2, opt3);
|
|
} else if (fw_func == fbsd_load) {
|
|
/* FIXME: let user set boot-loader serial device */
|
|
fbsd_init(opt1, opt2, opt3, NULL);
|
|
} else {
|
|
goto fail;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
fprintf(stderr, "Invalid firmware argument\n"
|
|
" -f kexec,'kernel','initrd','\"cmdline\"'\n"
|
|
" -f fbsd,'userboot','boot volume','\"kernel env\"'\n");
|
|
|
|
return -1;
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int c, error, gdb_port, bvmcons, fw;
|
|
int dump_guest_memory, max_vcpus, mptgen;
|
|
int rtc_localtime;
|
|
uint64_t rip;
|
|
size_t memsize;
|
|
|
|
bvmcons = 0;
|
|
dump_guest_memory = 0;
|
|
progname = basename(argv[0]);
|
|
gdb_port = 0;
|
|
guest_ncpus = 1;
|
|
print_mac = 0;
|
|
memsize = 256 * MB;
|
|
mptgen = 1;
|
|
rtc_localtime = 1;
|
|
fw = 0;
|
|
|
|
while ((c = getopt(argc, argv, "behvuwxMACHPWY:f:g:c:s:m:l:U:")) != -1) {
|
|
switch (c) {
|
|
case 'A':
|
|
acpi = 1;
|
|
break;
|
|
case 'b':
|
|
bvmcons = 1;
|
|
break;
|
|
case 'c':
|
|
guest_ncpus = atoi(optarg);
|
|
break;
|
|
case 'C':
|
|
dump_guest_memory = 1;
|
|
break;
|
|
case 'f':
|
|
if (firmware_parse(optarg) != 0) {
|
|
exit (1);
|
|
} else {
|
|
fw = 1;
|
|
break;
|
|
}
|
|
case 'g':
|
|
gdb_port = atoi(optarg);
|
|
break;
|
|
case 'l':
|
|
if (lpc_device_parse(optarg) != 0) {
|
|
errx(EX_USAGE, "invalid lpc device "
|
|
"configuration '%s'", optarg);
|
|
}
|
|
break;
|
|
case 's':
|
|
if (pci_parse_slot(optarg) != 0)
|
|
exit(1);
|
|
else
|
|
break;
|
|
case 'm':
|
|
error = parse_memsize(optarg, &memsize);
|
|
if (error)
|
|
errx(EX_USAGE, "invalid memsize '%s'", optarg);
|
|
break;
|
|
case 'M':
|
|
print_mac = 1;
|
|
break;
|
|
case 'H':
|
|
guest_vmexit_on_hlt = 1;
|
|
break;
|
|
case 'P':
|
|
guest_vmexit_on_pause = 1;
|
|
break;
|
|
case 'e':
|
|
strictio = 1;
|
|
break;
|
|
case 'u':
|
|
rtc_localtime = 0;
|
|
break;
|
|
case 'U':
|
|
guest_uuid_str = optarg;
|
|
break;
|
|
case 'w':
|
|
strictmsr = 0;
|
|
break;
|
|
case 'W':
|
|
virtio_msix = 0;
|
|
break;
|
|
case 'x':
|
|
x2apic_mode = 1;
|
|
break;
|
|
case 'Y':
|
|
mptgen = 0;
|
|
break;
|
|
case 'v':
|
|
show_version();
|
|
case 'h':
|
|
usage(0);
|
|
default:
|
|
usage(1);
|
|
}
|
|
}
|
|
|
|
if (fw != 1)
|
|
usage(1);
|
|
|
|
error = xh_vm_create();
|
|
if (error) {
|
|
fprintf(stderr, "Unable to create VM (%d)\n", error);
|
|
exit(1);
|
|
}
|
|
|
|
if (guest_ncpus < 1) {
|
|
fprintf(stderr, "Invalid guest vCPUs (%d)\n", guest_ncpus);
|
|
exit(1);
|
|
}
|
|
|
|
max_vcpus = num_vcpus_allowed();
|
|
if (guest_ncpus > max_vcpus) {
|
|
fprintf(stderr, "%d vCPUs requested but only %d available\n",
|
|
guest_ncpus, max_vcpus);
|
|
exit(1);
|
|
}
|
|
|
|
error = xh_vm_setup_memory(memsize, VM_MMAP_ALL);
|
|
if (error) {
|
|
fprintf(stderr, "Unable to setup memory (%d)\n", error);
|
|
exit(1);
|
|
}
|
|
|
|
error = init_msr();
|
|
if (error) {
|
|
fprintf(stderr, "init_msr error %d\n", error);
|
|
exit(1);
|
|
}
|
|
|
|
init_mem();
|
|
init_inout();
|
|
pci_irq_init();
|
|
ioapic_init();
|
|
|
|
rtc_init(rtc_localtime);
|
|
sci_init();
|
|
|
|
/*
|
|
* Exit if a device emulation finds an error in it's initilization
|
|
*/
|
|
if (init_pci() != 0)
|
|
exit(1);
|
|
|
|
if (gdb_port != 0)
|
|
init_dbgport(gdb_port);
|
|
|
|
if (bvmcons)
|
|
init_bvmcons();
|
|
|
|
/*
|
|
* build the guest tables, MP etc.
|
|
*/
|
|
if (mptgen) {
|
|
error = mptable_build(guest_ncpus);
|
|
if (error)
|
|
exit(1);
|
|
}
|
|
|
|
error = smbios_build();
|
|
assert(error == 0);
|
|
|
|
if (acpi) {
|
|
error = acpi_build(guest_ncpus);
|
|
assert(error == 0);
|
|
}
|
|
|
|
rip = 0;
|
|
|
|
vcpu_add(BSP, BSP, rip);
|
|
|
|
/*
|
|
* Head off to the main event dispatch loop
|
|
*/
|
|
mevent_dispatch();
|
|
|
|
exit(1);
|
|
}
|