#include <sys/mman.h>
-#include "hw/pci.h"
+#include "hw/pci/pci.h"
#include "hw/pc.h"
#include "hw/xen_common.h"
#include "hw/xen_backend.h"
+#include "qmp-commands.h"
-#include "range.h"
-#include "xen-mapcache.h"
+#include "char/char.h"
+#include "qemu/range.h"
+#include "sysemu/xen-mapcache.h"
#include "trace.h"
-#include "exec-memory.h"
+#include "exec/address-spaces.h"
#include <xen/hvm/ioreq.h>
#include <xen/hvm/params.h>
static MemoryRegion ram_memory, ram_640k, ram_lo, ram_hi;
static MemoryRegion *framebuffer;
+static bool xen_in_migration;
/* Compatibility with older version */
#if __XEN_LATEST_INTERFACE_VERSION__ < 0x0003020a
}
# define FMT_ioreq_size "u"
#endif
+#ifndef HVM_PARAM_BUFIOREQ_EVTCHN
+#define HVM_PARAM_BUFIOREQ_EVTCHN 26
+#endif
#define BUFFER_IO_MAX_DELAY 100
typedef struct XenPhysmap {
- target_phys_addr_t start_addr;
+ hwaddr start_addr;
ram_addr_t size;
- MemoryRegion *mr;
- target_phys_addr_t phys_offset;
+ char *name;
+ hwaddr phys_offset;
QLIST_ENTRY(XenPhysmap) list;
} XenPhysmap;
QEMUTimer *buffered_io_timer;
/* the evtchn port for polling the notification, */
evtchn_port_t *ioreq_local_port;
+ /* evtchn local port for buffered io */
+ evtchn_port_t bufioreq_local_port;
/* the evtchn fd for polling */
XenEvtchn xce_handle;
/* which vcpu we are serving */
struct xs_handle *xenstore;
MemoryListener memory_listener;
QLIST_HEAD(, XenPhysmap) physmap;
- target_phys_addr_t free_phys_offset;
+ hwaddr free_phys_offset;
const XenPhysmap *log_for_dirtybit;
Notifier exit;
+ Notifier suspend;
} XenIOState;
/* Xen specific function for piix pci */
}
}
-void xen_cmos_set_s3_resume(void *opaque, int irq, int level)
+void xen_hvm_inject_msi(uint64_t addr, uint32_t data)
{
- pc_cmos_set_s3_resume(opaque, irq, level);
- if (level) {
- xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
- }
+ xen_xc_hvm_inject_msi(xen_xc, xen_domid, addr, data);
+}
+
+static void xen_suspend_notifier(Notifier *notifier, void *data)
+{
+ xc_set_hvm_param(xen_xc, xen_domid, HVM_PARAM_ACPI_S_STATE, 3);
}
/* Xen Interrupt Controller */
xen_pfn_t *pfn_list;
int i;
+ if (runstate_check(RUN_STATE_INMIGRATE)) {
+ /* RAM already populated in Xen */
+ fprintf(stderr, "%s: do not alloc "RAM_ADDR_FMT
+ " bytes of ram at "RAM_ADDR_FMT" when runstate is INMIGRATE\n",
+ __func__, size, ram_addr);
+ return;
+ }
+
if (mr == &ram_memory) {
return;
}
}
static XenPhysmap *get_physmapping(XenIOState *state,
- target_phys_addr_t start_addr, ram_addr_t size)
+ hwaddr start_addr, ram_addr_t size)
{
XenPhysmap *physmap = NULL;
return NULL;
}
+static hwaddr xen_phys_offset_to_gaddr(hwaddr start_addr,
+ ram_addr_t size, void *opaque)
+{
+ hwaddr addr = start_addr & TARGET_PAGE_MASK;
+ XenIOState *xen_io_state = opaque;
+ XenPhysmap *physmap = NULL;
+
+ QLIST_FOREACH(physmap, &xen_io_state->physmap, list) {
+ if (range_covers_byte(physmap->phys_offset, physmap->size, addr)) {
+ return physmap->start_addr;
+ }
+ }
+
+ return start_addr;
+}
+
#if CONFIG_XEN_CTRL_INTERFACE_VERSION >= 340
static int xen_add_to_physmap(XenIOState *state,
- target_phys_addr_t start_addr,
+ hwaddr start_addr,
ram_addr_t size,
MemoryRegion *mr,
- target_phys_addr_t offset_within_region)
+ hwaddr offset_within_region)
{
unsigned long i = 0;
int rc = 0;
XenPhysmap *physmap = NULL;
- target_phys_addr_t pfn, start_gpfn;
- target_phys_addr_t phys_offset = memory_region_get_ram_addr(mr);
+ hwaddr pfn, start_gpfn;
+ hwaddr phys_offset = memory_region_get_ram_addr(mr);
+ char path[80], value[17];
if (get_physmapping(state, start_addr, size)) {
return 0;
return -1;
go_physmap:
- DPRINTF("mapping vram to %llx - %llx\n", start_addr, start_addr + size);
+ DPRINTF("mapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx"\n",
+ start_addr, start_addr + size);
pfn = phys_offset >> TARGET_PAGE_BITS;
start_gpfn = start_addr >> TARGET_PAGE_BITS;
physmap->start_addr = start_addr;
physmap->size = size;
+ physmap->name = (char *)mr->name;
physmap->phys_offset = phys_offset;
QLIST_INSERT_HEAD(&state->physmap, physmap, list);
start_addr >> TARGET_PAGE_BITS,
(start_addr + size) >> TARGET_PAGE_BITS,
XEN_DOMCTL_MEM_CACHEATTR_WB);
+
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%"PRIx64"/start_addr",
+ xen_domid, (uint64_t)phys_offset);
+ snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)start_addr);
+ if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
+ return -1;
+ }
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%"PRIx64"/size",
+ xen_domid, (uint64_t)phys_offset);
+ snprintf(value, sizeof(value), "%"PRIx64, (uint64_t)size);
+ if (!xs_write(state->xenstore, 0, path, value, strlen(value))) {
+ return -1;
+ }
+ if (mr->name) {
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%"PRIx64"/name",
+ xen_domid, (uint64_t)phys_offset);
+ if (!xs_write(state->xenstore, 0, path, mr->name, strlen(mr->name))) {
+ return -1;
+ }
+ }
+
return 0;
}
static int xen_remove_from_physmap(XenIOState *state,
- target_phys_addr_t start_addr,
+ hwaddr start_addr,
ram_addr_t size)
{
unsigned long i = 0;
int rc = 0;
XenPhysmap *physmap = NULL;
- target_phys_addr_t phys_offset = 0;
+ hwaddr phys_offset = 0;
physmap = get_physmapping(state, start_addr, size);
if (physmap == NULL) {
phys_offset = physmap->phys_offset;
size = physmap->size;
- DPRINTF("unmapping vram to %llx - %llx, from %llx\n",
- phys_offset, phys_offset + size, start_addr);
+ DPRINTF("unmapping vram to %"HWADDR_PRIx" - %"HWADDR_PRIx", from ",
+ "%"HWADDR_PRIx"\n", phys_offset, phys_offset + size, start_addr);
size >>= TARGET_PAGE_BITS;
start_addr >>= TARGET_PAGE_BITS;
#else
static int xen_add_to_physmap(XenIOState *state,
- target_phys_addr_t start_addr,
+ hwaddr start_addr,
ram_addr_t size,
MemoryRegion *mr,
- target_phys_addr_t offset_within_region)
+ hwaddr offset_within_region)
{
return -ENOSYS;
}
static int xen_remove_from_physmap(XenIOState *state,
- target_phys_addr_t start_addr,
+ hwaddr start_addr,
ram_addr_t size)
{
return -ENOSYS;
bool add)
{
XenIOState *state = container_of(listener, XenIOState, memory_listener);
- target_phys_addr_t start_addr = section->offset_within_address_space;
+ hwaddr start_addr = section->offset_within_address_space;
ram_addr_t size = section->size;
bool log_dirty = memory_region_is_logging(section->mr);
hvmmem_type_t mem_type;
}
static void xen_sync_dirty_bitmap(XenIOState *state,
- target_phys_addr_t start_addr,
+ hwaddr start_addr,
ram_addr_t size)
{
- target_phys_addr_t npages = size >> TARGET_PAGE_BITS;
+ hwaddr npages = size >> TARGET_PAGE_BITS;
const int width = sizeof(unsigned long) * 8;
unsigned long bitmap[(npages + width - 1) / width];
int rc, i, j;
bitmap);
if (rc < 0) {
if (rc != -ENODATA) {
- fprintf(stderr, "xen: track_dirty_vram failed (0x" TARGET_FMT_plx
+ memory_region_set_dirty(framebuffer, 0, size);
+ DPRINTF("xen: track_dirty_vram failed (0x" TARGET_FMT_plx
", 0x" TARGET_FMT_plx "): %s\n",
start_addr, start_addr + size, strerror(-rc));
}
static void xen_log_global_start(MemoryListener *listener)
{
+ if (xen_enabled()) {
+ xen_in_migration = true;
+ }
}
static void xen_log_global_stop(MemoryListener *listener)
{
-}
-
-static void xen_eventfd_add(MemoryListener *listener,
- MemoryRegionSection *section,
- bool match_data, uint64_t data, int fd)
-{
-}
-
-static void xen_eventfd_del(MemoryListener *listener,
- MemoryRegionSection *section,
- bool match_data, uint64_t data, int fd)
-{
+ xen_in_migration = false;
}
static MemoryListener xen_memory_listener = {
.log_sync = xen_log_sync,
.log_global_start = xen_log_global_start,
.log_global_stop = xen_log_global_stop,
- .eventfd_add = xen_eventfd_add,
- .eventfd_del = xen_eventfd_del,
.priority = 10,
};
+void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
+{
+ if (enable) {
+ memory_global_dirty_log_start();
+ } else {
+ memory_global_dirty_log_stop();
+ }
+}
+
/* VCPU Operations, MMIO, IO ring ... */
static void xen_reset_vcpu(void *opaque)
{
- CPUState *env = opaque;
+ CPUArchState *env = opaque;
env->halted = 1;
}
void xen_vcpu_init(void)
{
- CPUState *first_cpu;
-
- if ((first_cpu = qemu_get_cpu(0))) {
+ if (first_cpu != NULL) {
qemu_register_reset(xen_reset_vcpu, first_cpu);
xen_reset_vcpu(first_cpu);
}
+ /* if rtc_clock is left to default (host_clock), disable it */
+ if (rtc_clock == host_clock) {
+ qemu_clock_enable(rtc_clock, false);
+ }
}
/* get the ioreq packets from share mem */
evtchn_port_t port;
port = xc_evtchn_pending(state->xce_handle);
+ if (port == state->bufioreq_local_port) {
+ qemu_mod_timer(state->buffered_io_timer,
+ BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock));
+ return NULL;
+ }
+
if (port != -1) {
for (i = 0; i < smp_cpus; i++) {
if (state->ioreq_local_port[i] == port) {
}
}
-static void cpu_ioreq_pio(ioreq_t *req)
+/*
+ * Helper functions which read/write an object from/to physical guest
+ * memory, as part of the implementation of an ioreq.
+ *
+ * Equivalent to
+ * cpu_physical_memory_rw(addr + (req->df ? -1 : +1) * req->size * i,
+ * val, req->size, 0/1)
+ * except without the integer overflow problems.
+ */
+static void rw_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val, int rw)
+{
+ /* Do everything unsigned so overflow just results in a truncated result
+ * and accesses to undesired parts of guest memory, which is up
+ * to the guest */
+ hwaddr offset = (hwaddr)req->size * i;
+ if (req->df) {
+ addr -= offset;
+ } else {
+ addr += offset;
+ }
+ cpu_physical_memory_rw(addr, val, req->size, rw);
+}
+
+static inline void read_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val)
+{
+ rw_phys_req_item(addr, req, i, val, 0);
+}
+static inline void write_phys_req_item(hwaddr addr,
+ ioreq_t *req, uint32_t i, void *val)
{
- int i, sign;
+ rw_phys_req_item(addr, req, i, val, 1);
+}
+
- sign = req->df ? -1 : 1;
+static void cpu_ioreq_pio(ioreq_t *req)
+{
+ uint32_t i;
if (req->dir == IOREQ_READ) {
if (!req->data_is_ptr) {
for (i = 0; i < req->count; i++) {
tmp = do_inp(req->addr, req->size);
- cpu_physical_memory_write(req->data + (sign * i * req->size),
- (uint8_t *) &tmp, req->size);
+ write_phys_req_item(req->data, req, i, &tmp);
}
}
} else if (req->dir == IOREQ_WRITE) {
for (i = 0; i < req->count; i++) {
uint32_t tmp = 0;
- cpu_physical_memory_read(req->data + (sign * i * req->size),
- (uint8_t*) &tmp, req->size);
+ read_phys_req_item(req->data, req, i, &tmp);
do_outp(req->addr, req->size, tmp);
}
}
static void cpu_ioreq_move(ioreq_t *req)
{
- int i, sign;
-
- sign = req->df ? -1 : 1;
+ uint32_t i;
if (!req->data_is_ptr) {
if (req->dir == IOREQ_READ) {
for (i = 0; i < req->count; i++) {
- cpu_physical_memory_read(req->addr + (sign * i * req->size),
- (uint8_t *) &req->data, req->size);
+ read_phys_req_item(req->addr, req, i, &req->data);
}
} else if (req->dir == IOREQ_WRITE) {
for (i = 0; i < req->count; i++) {
- cpu_physical_memory_write(req->addr + (sign * i * req->size),
- (uint8_t *) &req->data, req->size);
+ write_phys_req_item(req->addr, req, i, &req->data);
}
}
} else {
if (req->dir == IOREQ_READ) {
for (i = 0; i < req->count; i++) {
- cpu_physical_memory_read(req->addr + (sign * i * req->size),
- (uint8_t*) &tmp, req->size);
- cpu_physical_memory_write(req->data + (sign * i * req->size),
- (uint8_t*) &tmp, req->size);
+ read_phys_req_item(req->addr, req, i, &tmp);
+ write_phys_req_item(req->data, req, i, &tmp);
}
} else if (req->dir == IOREQ_WRITE) {
for (i = 0; i < req->count; i++) {
- cpu_physical_memory_read(req->data + (sign * i * req->size),
- (uint8_t*) &tmp, req->size);
- cpu_physical_memory_write(req->addr + (sign * i * req->size),
- (uint8_t*) &tmp, req->size);
+ read_phys_req_item(req->data, req, i, &tmp);
+ write_phys_req_item(req->addr, req, i, &tmp);
}
}
}
}
}
-static void handle_buffered_iopage(XenIOState *state)
+static int handle_buffered_iopage(XenIOState *state)
{
buf_ioreq_t *buf_req = NULL;
ioreq_t req;
int qw;
if (!state->buffered_io_page) {
- return;
+ return 0;
}
+ memset(&req, 0x00, sizeof(req));
+
while (state->buffered_io_page->read_pointer != state->buffered_io_page->write_pointer) {
buf_req = &state->buffered_io_page->buf_ioreq[
state->buffered_io_page->read_pointer % IOREQ_BUFFER_SLOT_NUM];
xen_mb();
state->buffered_io_page->read_pointer += qw ? 2 : 1;
}
+
+ return req.count;
}
static void handle_buffered_io(void *opaque)
{
XenIOState *state = opaque;
- handle_buffered_iopage(state);
- qemu_mod_timer(state->buffered_io_timer,
- BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock));
+ if (handle_buffered_iopage(state)) {
+ qemu_mod_timer(state->buffered_io_timer,
+ BUFFER_IO_MAX_DELAY + qemu_get_clock_ms(rt_clock));
+ } else {
+ qemu_del_timer(state->buffered_io_timer);
+ xc_evtchn_unmask(state->xce_handle, state->bufioreq_local_port);
+ }
}
static void cpu_handle_ioreq(void *opaque)
"data: %"PRIx64", count: %" FMT_ioreq_size ", size: %" FMT_ioreq_size "\n",
req->state, req->data_is_ptr, req->addr,
req->data, req->count, req->size);
- destroy_hvm_domain();
+ destroy_hvm_domain(false);
return;
}
*/
if (runstate_is_running()) {
if (qemu_shutdown_requested_get()) {
- destroy_hvm_domain();
+ destroy_hvm_domain(false);
}
if (qemu_reset_requested_get()) {
qemu_system_reset(VMRESET_REPORT);
+ destroy_hvm_domain(true);
}
}
state->buffered_io_timer = qemu_new_timer_ms(rt_clock, handle_buffered_io,
state);
- qemu_mod_timer(state->buffered_io_timer, qemu_get_clock_ms(rt_clock));
if (evtchn_fd != -1) {
qemu_set_fd_handler(evtchn_fd, cpu_handle_ioreq, NULL, state);
return 0;
}
+static void xen_read_physmap(XenIOState *state)
+{
+ XenPhysmap *physmap = NULL;
+ unsigned int len, num, i;
+ char path[80], *value = NULL;
+ char **entries = NULL;
+
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap", xen_domid);
+ entries = xs_directory(state->xenstore, 0, path, &num);
+ if (entries == NULL)
+ return;
+
+ for (i = 0; i < num; i++) {
+ physmap = g_malloc(sizeof (XenPhysmap));
+ physmap->phys_offset = strtoull(entries[i], NULL, 16);
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%s/start_addr",
+ xen_domid, entries[i]);
+ value = xs_read(state->xenstore, 0, path, &len);
+ if (value == NULL) {
+ free(physmap);
+ continue;
+ }
+ physmap->start_addr = strtoull(value, NULL, 16);
+ free(value);
+
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%s/size",
+ xen_domid, entries[i]);
+ value = xs_read(state->xenstore, 0, path, &len);
+ if (value == NULL) {
+ free(physmap);
+ continue;
+ }
+ physmap->size = strtoull(value, NULL, 16);
+ free(value);
+
+ snprintf(path, sizeof(path),
+ "/local/domain/0/device-model/%d/physmap/%s/name",
+ xen_domid, entries[i]);
+ physmap->name = xs_read(state->xenstore, 0, path, &len);
+
+ QLIST_INSERT_HEAD(&state->physmap, physmap, list);
+ }
+ free(entries);
+}
+
int xen_hvm_init(void)
{
int i, rc;
unsigned long ioreq_pfn;
+ unsigned long bufioreq_evtchn;
XenIOState *state;
state = g_malloc0(sizeof (XenIOState));
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
+ state->suspend.notify = xen_suspend_notifier;
+ qemu_register_suspend_notifier(&state->suspend);
+
xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_IOREQ_PFN, &ioreq_pfn);
DPRINTF("shared page at pfn %lx\n", ioreq_pfn);
state->shared_page = xc_map_foreign_range(xen_xc, xen_domid, XC_PAGE_SIZE,
state->ioreq_local_port[i] = rc;
}
+ rc = xc_get_hvm_param(xen_xc, xen_domid, HVM_PARAM_BUFIOREQ_EVTCHN,
+ &bufioreq_evtchn);
+ if (rc < 0) {
+ fprintf(stderr, "failed to get HVM_PARAM_BUFIOREQ_EVTCHN\n");
+ return -1;
+ }
+ rc = xc_evtchn_bind_interdomain(state->xce_handle, xen_domid,
+ (uint32_t)bufioreq_evtchn);
+ if (rc == -1) {
+ fprintf(stderr, "bind interdomain ioctl error %d\n", errno);
+ return -1;
+ }
+ state->bufioreq_local_port = rc;
+
/* Init RAM management */
- xen_map_cache_init();
+ xen_map_cache_init(xen_phys_offset_to_gaddr, state);
xen_ram_init(ram_size);
qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state);
state->memory_listener = xen_memory_listener;
QLIST_INIT(&state->physmap);
- memory_listener_register(&state->memory_listener, get_system_memory());
+ memory_listener_register(&state->memory_listener, &address_space_memory);
state->log_for_dirtybit = NULL;
/* Initialize backend core & drivers */
xen_be_register("console", &xen_console_ops);
xen_be_register("vkbd", &xen_kbdmouse_ops);
xen_be_register("qdisk", &xen_blkdev_ops);
+ xen_read_physmap(state);
return 0;
}
-void destroy_hvm_domain(void)
+void destroy_hvm_domain(bool reboot)
{
XenXC xc_handle;
int sts;
if (xc_handle == XC_HANDLER_INITIAL_VALUE) {
fprintf(stderr, "Cannot acquire xenctrl handle\n");
} else {
- sts = xc_domain_shutdown(xc_handle, xen_domid, SHUTDOWN_poweroff);
+ sts = xc_domain_shutdown(xc_handle, xen_domid,
+ reboot ? SHUTDOWN_reboot : SHUTDOWN_poweroff);
if (sts != 0) {
- fprintf(stderr, "? xc_domain_shutdown failed to issue poweroff, "
- "sts %d, %s\n", sts, strerror(errno));
+ fprintf(stderr, "xc_domain_shutdown failed to issue %s, "
+ "sts %d, %s\n", reboot ? "reboot" : "poweroff",
+ sts, strerror(errno));
} else {
- fprintf(stderr, "Issued domain %d poweroff\n", xen_domid);
+ fprintf(stderr, "Issued domain %d %s\n", xen_domid,
+ reboot ? "reboot" : "poweroff");
}
xc_interface_close(xc_handle);
}
{
framebuffer = mr;
}
+
+void xen_shutdown_fatal_error(const char *fmt, ...)
+{
+ va_list ap;
+
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ va_end(ap);
+ fprintf(stderr, "Will destroy the domain.\n");
+ /* destroy the domain */
+ qemu_system_shutdown_request();
+}
+
+void xen_modified_memory(ram_addr_t start, ram_addr_t length)
+{
+ if (unlikely(xen_in_migration)) {
+ int rc;
+ ram_addr_t start_pfn, nb_pages;
+
+ if (length == 0) {
+ length = TARGET_PAGE_SIZE;
+ }
+ start_pfn = start >> TARGET_PAGE_BITS;
+ nb_pages = ((start + length + TARGET_PAGE_SIZE - 1) >> TARGET_PAGE_BITS)
+ - start_pfn;
+ rc = xc_hvm_modified_memory(xen_xc, xen_domid, start_pfn, nb_pages);
+ if (rc) {
+ fprintf(stderr,
+ "%s failed for "RAM_ADDR_FMT" ("RAM_ADDR_FMT"): %i, %s\n",
+ __func__, start, nb_pages, rc, strerror(-rc));
+ }
+ }
+}
projects / qemu.git / blobdiff