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Merge remote-tracking branch 'qemu-kvm/uq/master' into staging 

* qemu-kvm/uq/master:
  virtio: move common irqfd handling out of virtio-pci
  virtio: move common ioeventfd handling out of virtio-pci
  event_notifier: add event_notifier_set_handler
  memory: pass EventNotifier, not eventfd
  ivshmem: wrap ivshmem_del_eventfd loops with transaction
  ivshmem: use EventNotifier and memory API
  event_notifier: add event_notifier_init_fd
  event_notifier: remove event_notifier_test
  event_notifier: add event_notifier_set
  apic: Defer interrupt updates to VCPU thread
  apic: Reevaluate pending interrupts on LVT_LINT0 changes
  apic: Resolve potential endless loop around apic_update_irq
  kvm: expose tsc deadline timer feature to guest
  kvm_pv_eoi: add flag support
  kvm: Don't abort on kvm_irqchip_add_msi_route()
This commit is contained in:
Anthony Liguori 2012-07-18 14:44:43 -05:00
parent 513e6bde4f 15b2bd1847
commit 09f06a6c60
22 changed files with 233 additions and 145 deletions
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6
cpu-exec.c
View File

@ -288,6 +288,12 @@ int cpu_exec(CPUArchState *env)
}
#endif
#if defined(TARGET_I386)
#if !defined(CONFIG_USER_ONLY)
if (interrupt_request & CPU_INTERRUPT_POLL) {
env->interrupt_request &= ~CPU_INTERRUPT_POLL;
apic_poll_irq(env->apic_state);
}
#endif
if (interrupt_request & CPU_INTERRUPT_INIT) {
cpu_svm_check_intercept_param(env, SVM_EXIT_INIT,
0);

36
event_notifier.c
View File

@ -10,11 +10,19 @@
* See the COPYING file in the top-level directory.
*/
#include "qemu-common.h"
#include "event_notifier.h"
#include "qemu-char.h"
#ifdef CONFIG_EVENTFD
#include <sys/eventfd.h>
#endif
void event_notifier_init_fd(EventNotifier *e, int fd)
{
e->fd = fd;
}
int event_notifier_init(EventNotifier *e, int active)
{
#ifdef CONFIG_EVENTFD
@ -38,24 +46,22 @@ int event_notifier_get_fd(EventNotifier *e)
return e->fd;
}
int event_notifier_set_handler(EventNotifier *e,
EventNotifierHandler *handler)
{
return qemu_set_fd_handler(e->fd, (IOHandler *)handler, NULL, e);
}
int event_notifier_set(EventNotifier *e)
{
uint64_t value = 1;
int r = write(e->fd, &value, sizeof(value));
return r == sizeof(value);
}
int event_notifier_test_and_clear(EventNotifier *e)
{
uint64_t value;
int r = read(e->fd, &value, sizeof(value));
return r == sizeof(value);
}
int event_notifier_test(EventNotifier *e)
{
uint64_t value;
int r = read(e->fd, &value, sizeof(value));
if (r == sizeof(value)) {
/* restore previous value. */
int s = write(e->fd, &value, sizeof(value));
/* never blocks because we use EFD_SEMAPHORE.
* If we didn't we'd get EAGAIN on overflow
* and we'd have to write code to ignore it. */
assert(s == sizeof(value));
}
return r == sizeof(value);
}

8
event_notifier.h
View File

@ -16,13 +16,17 @@
#include "qemu-common.h"
struct EventNotifier {
int fd;
int fd;
};
typedef void EventNotifierHandler(EventNotifier *);
void event_notifier_init_fd(EventNotifier *, int fd);
int event_notifier_init(EventNotifier *, int active);
void event_notifier_cleanup(EventNotifier *);
int event_notifier_get_fd(EventNotifier *);
int event_notifier_set(EventNotifier *);
int event_notifier_test_and_clear(EventNotifier *);
int event_notifier_test(EventNotifier *);
int event_notifier_set_handler(EventNotifier *, EventNotifierHandler *);
#endif

8
exec.c
View File

@ -3210,13 +3210,13 @@ static void core_log_global_stop(MemoryListener *listener)
static void core_eventfd_add(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data, EventNotifier *e)
{
}
static void core_eventfd_del(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data, EventNotifier *e)
{
}
@ -3276,13 +3276,13 @@ static void io_log_global_stop(MemoryListener *listener)
static void io_eventfd_add(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data, EventNotifier *e)
{
}
static void io_eventfd_del(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data, EventNotifier *e)
{
}

27
hw/apic.c
View File

@ -16,6 +16,7 @@
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>
*/
#include "qemu-thread.h"
#include "apic_internal.h"
#include "apic.h"
#include "ioapic.h"
@ -361,11 +362,10 @@ static void apic_update_irq(APICCommonState *s)
if (!(s->spurious_vec & APIC_SV_ENABLE)) {
return;
}
if (apic_irq_pending(s) > 0) {
if (!qemu_cpu_is_self(s->cpu_env)) {
cpu_interrupt(s->cpu_env, CPU_INTERRUPT_POLL);
} else if (apic_irq_pending(s) > 0) {
cpu_interrupt(s->cpu_env, CPU_INTERRUPT_HARD);
} else if (apic_accept_pic_intr(&s->busdev.qdev) &&
pic_get_output(isa_pic)) {
apic_deliver_pic_intr(&s->busdev.qdev, 1);
}
}
@ -535,6 +535,15 @@ static void apic_deliver(DeviceState *d, uint8_t dest, uint8_t dest_mode,
apic_bus_deliver(deliver_bitmask, delivery_mode, vector_num, trigger_mode);
}
static bool apic_check_pic(APICCommonState *s)
{
if (!apic_accept_pic_intr(&s->busdev.qdev) || !pic_get_output(isa_pic)) {
return false;
}
apic_deliver_pic_intr(&s->busdev.qdev, 1);
return true;
}
int apic_get_interrupt(DeviceState *d)
{
APICCommonState *s = DO_UPCAST(APICCommonState, busdev.qdev, d);
@ -560,7 +569,12 @@ int apic_get_interrupt(DeviceState *d)
reset_bit(s->irr, intno);
set_bit(s->isr, intno);
apic_sync_vapic(s, SYNC_TO_VAPIC);
/* re-inject if there is still a pending PIC interrupt */
apic_check_pic(s);
apic_update_irq(s);
return intno;
}
@ -800,8 +814,11 @@ static void apic_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
{
int n = index - 0x32;
s->lvt[n] = val;
if (n == APIC_LVT_TIMER)
if (n == APIC_LVT_TIMER) {
apic_timer_update(s, qemu_get_clock_ns(vm_clock));
} else if (n == APIC_LVT_LINT0 && apic_check_pic(s)) {
apic_update_irq(s);
}
}
break;
case 0x38:

1
hw/apic.h
View File

@ -20,6 +20,7 @@ void apic_init_reset(DeviceState *s);
void apic_sipi(DeviceState *s);
void apic_handle_tpr_access_report(DeviceState *d, target_ulong ip,
TPRAccess access);
void apic_poll_irq(DeviceState *d);
/* pc.c */
int cpu_is_bsp(CPUX86State *env);

1
hw/apic_internal.h
View File

@ -141,7 +141,6 @@ void apic_report_irq_delivered(int delivered);
bool apic_next_timer(APICCommonState *s, int64_t current_time);
void apic_enable_tpr_access_reporting(DeviceState *d, bool enable);
void apic_enable_vapic(DeviceState *d, target_phys_addr_t paddr);
void apic_poll_irq(DeviceState *d);
void vapic_report_tpr_access(DeviceState *dev, void *cpu, target_ulong ip,
TPRAccess access);

67
hw/ivshmem.c
View File

@ -23,6 +23,7 @@
#include "kvm.h"
#include "migration.h"
#include "qerror.h"
#include "event_notifier.h"
#include <sys/mman.h>
#include <sys/types.h>
@ -45,7 +46,7 @@
typedef struct Peer {
int nb_eventfds;
int *eventfds;
EventNotifier *eventfds;
} Peer;
typedef struct EventfdEntry {
@ -63,7 +64,6 @@ typedef struct IVShmemState {
CharDriverState *server_chr;
MemoryRegion ivshmem_mmio;
pcibus_t mmio_addr;
/* We might need to register the BAR before we actually have the memory.
* So prepare a container MemoryRegion for the BAR immediately and
* add a subregion when we have the memory.
@ -168,7 +168,6 @@ static void ivshmem_io_write(void *opaque, target_phys_addr_t addr,
{
IVShmemState *s = opaque;
uint64_t write_one = 1;
uint16_t dest = val >> 16;
uint16_t vector = val & 0xff;
@ -194,12 +193,8 @@ static void ivshmem_io_write(void *opaque, target_phys_addr_t addr,
/* check doorbell range */
if (vector < s->peers[dest].nb_eventfds) {
IVSHMEM_DPRINTF("Writing %" PRId64 " to VM %d on vector %d\n",
write_one, dest, vector);
if (write(s->peers[dest].eventfds[vector],
&(write_one), 8) != 8) {
IVSHMEM_DPRINTF("error writing to eventfd\n");
}
IVSHMEM_DPRINTF("Notifying VM %d on vector %d\n", dest, vector);
event_notifier_set(&s->peers[dest].eventfds[vector]);
}
break;
default:
@ -279,12 +274,13 @@ static void fake_irqfd(void *opaque, const uint8_t *buf, int size) {
msix_notify(pdev, entry->vector);
}
static CharDriverState* create_eventfd_chr_device(void * opaque, int eventfd,
int vector)
static CharDriverState* create_eventfd_chr_device(void * opaque, EventNotifier *n,
int vector)
{
/* create a event character device based on the passed eventfd */
IVShmemState *s = opaque;
CharDriverState * chr;
int eventfd = event_notifier_get_fd(n);
chr = qemu_chr_open_eventfd(eventfd);
@ -347,16 +343,39 @@ static void create_shared_memory_BAR(IVShmemState *s, int fd) {
pci_register_bar(&s->dev, 2, PCI_BASE_ADDRESS_SPACE_MEMORY, &s->bar);
}
static void ivshmem_add_eventfd(IVShmemState *s, int posn, int i)
{
memory_region_add_eventfd(&s->ivshmem_mmio,
DOORBELL,
4,
true,
(posn << 16) | i,
&s->peers[posn].eventfds[i]);
}
static void ivshmem_del_eventfd(IVShmemState *s, int posn, int i)
{
memory_region_del_eventfd(&s->ivshmem_mmio,
DOORBELL,
4,
true,
(posn << 16) | i,
&s->peers[posn].eventfds[i]);
}
static void close_guest_eventfds(IVShmemState *s, int posn)
{
int i, guest_curr_max;
guest_curr_max = s->peers[posn].nb_eventfds;
memory_region_transaction_begin();
for (i = 0; i < guest_curr_max; i++) {
kvm_set_ioeventfd_mmio(s->peers[posn].eventfds[i],
s->mmio_addr + DOORBELL, (posn << 16) | i, 0, 4);
close(s->peers[posn].eventfds[i]);
ivshmem_del_eventfd(s, posn, i);
}
memory_region_transaction_commit();
for (i = 0; i < guest_curr_max; i++) {
event_notifier_cleanup(&s->peers[posn].eventfds[i]);
}
g_free(s->peers[posn].eventfds);
@ -369,12 +388,7 @@ static void setup_ioeventfds(IVShmemState *s) {
for (i = 0; i <= s->max_peer; i++) {
for (j = 0; j < s->peers[i].nb_eventfds; j++) {
memory_region_add_eventfd(&s->ivshmem_mmio,
DOORBELL,
4,
true,
(i << 16) | j,
s->peers[i].eventfds[j]);
ivshmem_add_eventfd(s, i, j);
}
}
}
@ -476,14 +490,14 @@ static void ivshmem_read(void *opaque, const uint8_t * buf, int flags)
if (guest_max_eventfd == 0) {
/* one eventfd per MSI vector */
s->peers[incoming_posn].eventfds = (int *) g_malloc(s->vectors *
sizeof(int));
s->peers[incoming_posn].eventfds = g_new(EventNotifier, s->vectors);
}
/* this is an eventfd for a particular guest VM */
IVSHMEM_DPRINTF("eventfds[%ld][%d] = %d\n", incoming_posn,
guest_max_eventfd, incoming_fd);
s->peers[incoming_posn].eventfds[guest_max_eventfd] = incoming_fd;
event_notifier_init_fd(&s->peers[incoming_posn].eventfds[guest_max_eventfd],
incoming_fd);
/* increment count for particular guest */
s->peers[incoming_posn].nb_eventfds++;
@ -495,15 +509,12 @@ static void ivshmem_read(void *opaque, const uint8_t * buf, int flags)
if (incoming_posn == s->vm_id) {
s->eventfd_chr[guest_max_eventfd] = create_eventfd_chr_device(s,
s->peers[s->vm_id].eventfds[guest_max_eventfd],
&s->peers[s->vm_id].eventfds[guest_max_eventfd],
guest_max_eventfd);
}
if (ivshmem_has_feature(s, IVSHMEM_IOEVENTFD)) {
if (kvm_set_ioeventfd_mmio(incoming_fd, s->mmio_addr + DOORBELL,
(incoming_posn << 16) | guest_max_eventfd, 1, 4) < 0) {
fprintf(stderr, "ivshmem: ioeventfd not available\n");
}
ivshmem_add_eventfd(s, incoming_posn, guest_max_eventfd);
}
return;

4
hw/vhost.c
View File

@ -737,13 +737,13 @@ static void vhost_virtqueue_cleanup(struct vhost_dev *dev,
static void vhost_eventfd_add(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data, EventNotifier *e)
{
}
static void vhost_eventfd_del(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data, EventNotifier *e)
{
}

77
hw/virtio-pci.c
View File

@ -173,46 +173,18 @@ static int virtio_pci_set_host_notifier_internal(VirtIOPCIProxy *proxy,
__func__, r);
return r;
}
virtio_queue_set_host_notifier_fd_handler(vq, true);
memory_region_add_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
true, n, event_notifier_get_fd(notifier));
true, n, notifier);
} else {
memory_region_del_eventfd(&proxy->bar, VIRTIO_PCI_QUEUE_NOTIFY, 2,
true, n, event_notifier_get_fd(notifier));
/* Handle the race condition where the guest kicked and we deassigned
* before we got around to handling the kick.
*/
if (event_notifier_test_and_clear(notifier)) {
virtio_queue_notify_vq(vq);
}
true, n, notifier);
virtio_queue_set_host_notifier_fd_handler(vq, false);
event_notifier_cleanup(notifier);
}
return r;
}
static void virtio_pci_host_notifier_read(void *opaque)
{
VirtQueue *vq = opaque;
EventNotifier *n = virtio_queue_get_host_notifier(vq);
if (event_notifier_test_and_clear(n)) {
virtio_queue_notify_vq(vq);
}
}
static void virtio_pci_set_host_notifier_fd_handler(VirtIOPCIProxy *proxy,
int n, bool assign)
{
VirtQueue *vq = virtio_get_queue(proxy->vdev, n);
EventNotifier *notifier = virtio_queue_get_host_notifier(vq);
if (assign) {
qemu_set_fd_handler(event_notifier_get_fd(notifier),
virtio_pci_host_notifier_read, NULL, vq);
} else {
qemu_set_fd_handler(event_notifier_get_fd(notifier),
NULL, NULL, NULL);
}
}
static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy)
{
int n, r;
@ -232,8 +204,6 @@ static void virtio_pci_start_ioeventfd(VirtIOPCIProxy *proxy)
if (r < 0) {
goto assign_error;
}
virtio_pci_set_host_notifier_fd_handler(proxy, n, true);
}
proxy->ioeventfd_started = true;
return;
@ -244,7 +214,6 @@ assign_error:
continue;
}
virtio_pci_set_host_notifier_fd_handler(proxy, n, false);
r = virtio_pci_set_host_notifier_internal(proxy, n, false);
assert(r >= 0);
}
@ -266,7 +235,6 @@ static void virtio_pci_stop_ioeventfd(VirtIOPCIProxy *proxy)
continue;
}
virtio_pci_set_host_notifier_fd_handler(proxy, n, false);
r = virtio_pci_set_host_notifier_internal(proxy, n, false);
assert(r >= 0);
}
@ -528,25 +496,15 @@ static unsigned virtio_pci_get_features(void *opaque)
return proxy->host_features;
}
static void virtio_pci_guest_notifier_read(void *opaque)
{
VirtQueue *vq = opaque;
EventNotifier *n = virtio_queue_get_guest_notifier(vq);
if (event_notifier_test_and_clear(n)) {
virtio_irq(vq);
}
}
static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy,
unsigned int queue_no,
unsigned int vector,
MSIMessage msg)
{
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no);
EventNotifier *n = virtio_queue_get_guest_notifier(vq);
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
int fd, ret;
fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vq));
int ret;
if (irqfd->users == 0) {
ret = kvm_irqchip_add_msi_route(kvm_state, msg);
@ -557,7 +515,7 @@ static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy,
}
irqfd->users++;
ret = kvm_irqchip_add_irqfd(kvm_state, fd, irqfd->virq);
ret = kvm_irqchip_add_irq_notifier(kvm_state, n, irqfd->virq);
if (ret < 0) {
if (--irqfd->users == 0) {
kvm_irqchip_release_virq(kvm_state, irqfd->virq);
@ -565,8 +523,7 @@ static int kvm_virtio_pci_vq_vector_use(VirtIOPCIProxy *proxy,
return ret;
}
qemu_set_fd_handler(fd, NULL, NULL, NULL);
virtio_queue_set_guest_notifier_fd_handler(vq, true, true);
return 0;
}
@ -575,19 +532,18 @@ static void kvm_virtio_pci_vq_vector_release(VirtIOPCIProxy *proxy,
unsigned int vector)
{
VirtQueue *vq = virtio_get_queue(proxy->vdev, queue_no);
EventNotifier *n = virtio_queue_get_guest_notifier(vq);
VirtIOIRQFD *irqfd = &proxy->vector_irqfd[vector];
int fd, ret;
int ret;
fd = event_notifier_get_fd(virtio_queue_get_guest_notifier(vq));
ret = kvm_irqchip_remove_irqfd(kvm_state, fd, irqfd->virq);
ret = kvm_irqchip_remove_irq_notifier(kvm_state, n, irqfd->virq);
assert(ret == 0);
if (--irqfd->users == 0) {
kvm_irqchip_release_virq(kvm_state, irqfd->virq);
}
qemu_set_fd_handler(fd, virtio_pci_guest_notifier_read, NULL, vq);
virtio_queue_set_guest_notifier_fd_handler(vq, true, false);
}
static int kvm_virtio_pci_vector_use(PCIDevice *dev, unsigned vector,
@ -649,14 +605,9 @@ static int virtio_pci_set_guest_notifier(void *opaque, int n, bool assign)
if (r < 0) {
return r;
}
qemu_set_fd_handler(event_notifier_get_fd(notifier),
virtio_pci_guest_notifier_read, NULL, vq);
virtio_queue_set_guest_notifier_fd_handler(vq, true, false);
} else {
qemu_set_fd_handler(event_notifier_get_fd(notifier),
NULL, NULL, NULL);
/* Test and clear notifier before closing it,
* in case poll callback didn't have time to run. */
virtio_pci_guest_notifier_read(vq);
virtio_queue_set_guest_notifier_fd_handler(vq, false, false);
event_notifier_cleanup(notifier);
}

46
hw/virtio.c
View File

@ -984,10 +984,56 @@ VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n)
return vdev->vq + n;
}
static void virtio_queue_guest_notifier_read(EventNotifier *n)
{
VirtQueue *vq = container_of(n, VirtQueue, guest_notifier);
if (event_notifier_test_and_clear(n)) {
virtio_irq(vq);
}
}
void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
bool with_irqfd)
{
if (assign && !with_irqfd) {
event_notifier_set_handler(&vq->guest_notifier,
virtio_queue_guest_notifier_read);
} else {
event_notifier_set_handler(&vq->guest_notifier, NULL);
}
if (!assign) {
/* Test and clear notifier before closing it,
* in case poll callback didn't have time to run. */
virtio_queue_guest_notifier_read(&vq->guest_notifier);
}
}
EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq)
{
return &vq->guest_notifier;
}
static void virtio_queue_host_notifier_read(EventNotifier *n)
{
VirtQueue *vq = container_of(n, VirtQueue, host_notifier);
if (event_notifier_test_and_clear(n)) {
virtio_queue_notify_vq(vq);
}
}
void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign)
{
if (assign) {
event_notifier_set_handler(&vq->host_notifier,
virtio_queue_host_notifier_read);
} else {
event_notifier_set_handler(&vq->host_notifier, NULL);
/* Test and clear notifier before after disabling event,
* in case poll callback didn't have time to run. */
virtio_queue_host_notifier_read(&vq->host_notifier);
}
}
EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq)
{
return &vq->host_notifier;

3
hw/virtio.h
View File

@ -231,7 +231,10 @@ void virtio_queue_set_last_avail_idx(VirtIODevice *vdev, int n, uint16_t idx);
VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n);
int virtio_queue_get_id(VirtQueue *vq);
EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq);
void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign,
bool with_irqfd);
EventNotifier *virtio_queue_get_host_notifier(VirtQueue *vq);
void virtio_queue_set_host_notifier_fd_handler(VirtQueue *vq, bool assign);
void virtio_queue_notify_vq(VirtQueue *vq);
void virtio_irq(VirtQueue *vq);
#endif

2
hw/xen_pt.c
View File

@ -634,7 +634,7 @@ static void xen_pt_log_global_fns(MemoryListener *l)
}
static void xen_pt_eventfd_fns(MemoryListener *l, MemoryRegionSection *s,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data, EventNotifier *n)
{
}

31
kvm-all.c
View File

@ -32,6 +32,7 @@
#include "bswap.h"
#include "memory.h"
#include "exec-memory.h"
#include "event_notifier.h"
/* This check must be after config-host.h is included */
#ifdef CONFIG_EVENTFD
@ -800,23 +801,29 @@ static void kvm_io_ioeventfd_del(MemoryRegionSection *section,
static void kvm_eventfd_add(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data,
EventNotifier *e)
{
if (section->address_space == get_system_memory()) {
kvm_mem_ioeventfd_add(section, match_data, data, fd);
kvm_mem_ioeventfd_add(section, match_data, data,
event_notifier_get_fd(e));
} else {
kvm_io_ioeventfd_add(section, match_data, data, fd);
kvm_io_ioeventfd_add(section, match_data, data,
event_notifier_get_fd(e));
}
}
static void kvm_eventfd_del(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data,
EventNotifier *e)
{
if (section->address_space == get_system_memory()) {
kvm_mem_ioeventfd_del(section, match_data, data, fd);
kvm_mem_ioeventfd_del(section, match_data, data,
event_notifier_get_fd(e));
} else {
kvm_io_ioeventfd_del(section, match_data, data, fd);
kvm_io_ioeventfd_del(section, match_data, data,
event_notifier_get_fd(e));
}
}
@ -1142,7 +1149,7 @@ int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg)
int kvm_irqchip_add_msi_route(KVMState *s, MSIMessage msg)
{
abort();
return -ENOSYS;
}
static int kvm_irqchip_assign_irqfd(KVMState *s, int fd, int virq, bool assign)
@ -1156,11 +1163,21 @@ int kvm_irqchip_add_irqfd(KVMState *s, int fd, int virq)
return kvm_irqchip_assign_irqfd(s, fd, virq, true);
}
int kvm_irqchip_add_irq_notifier(KVMState *s, EventNotifier *n, int virq)
{
return kvm_irqchip_add_irqfd(s, event_notifier_get_fd(n), virq);
}
int kvm_irqchip_remove_irqfd(KVMState *s, int fd, int virq)
{
return kvm_irqchip_assign_irqfd(s, fd, virq, false);
}
int kvm_irqchip_remove_irq_notifier(KVMState *s, EventNotifier *n, int virq)
{
return kvm_irqchip_remove_irqfd(s, event_notifier_get_fd(n), virq);
}
static int kvm_irqchip_create(KVMState *s)
{
QemuOptsList *list = qemu_find_opts("machine");

10
kvm-stub.c
View File

@ -147,7 +147,17 @@ int kvm_irqchip_add_irqfd(KVMState *s, int fd, int virq)
return -ENOSYS;
}
int kvm_irqchip_add_irq_notifier(KVMState *s, EventNotifier *n, int virq)
{
return -ENOSYS;
}
int kvm_irqchip_remove_irqfd(KVMState *s, int fd, int virq)
{
return -ENOSYS;
}
int kvm_irqchip_remove_irq_notifier(KVMState *s, EventNotifier *n, int virq)
{
return -ENOSYS;
}

2
kvm.h
View File

@ -220,4 +220,6 @@ void kvm_irqchip_release_virq(KVMState *s, int virq);
int kvm_irqchip_add_irqfd(KVMState *s, int fd, int virq);
int kvm_irqchip_remove_irqfd(KVMState *s, int fd, int virq);
int kvm_irqchip_add_irq_notifier(KVMState *s, EventNotifier *n, int virq);
int kvm_irqchip_remove_irq_notifier(KVMState *s, EventNotifier *n, int virq);
#endif

18
memory.c
View File

@ -156,7 +156,7 @@ struct MemoryRegionIoeventfd {
AddrRange addr;
bool match_data;
uint64_t data;
int fd;
EventNotifier *e;
};
static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
@ -181,9 +181,9 @@ static bool memory_region_ioeventfd_before(MemoryRegionIoeventfd a,
return false;
}
}
if (a.fd < b.fd) {
if (a.e < b.e) {
return true;
} else if (a.fd > b.fd) {
} else if (a.e > b.e) {
return false;
}
return false;
@ -597,7 +597,7 @@ static void address_space_add_del_ioeventfds(AddressSpace *as,
.size = int128_get64(fd->addr.size),
};
MEMORY_LISTENER_CALL(eventfd_del, Forward, &section,
fd->match_data, fd->data, fd->fd);
fd->match_data, fd->data, fd->e);
++iold;
} else if (inew < fds_new_nb
&& (iold == fds_old_nb
@ -610,7 +610,7 @@ static void address_space_add_del_ioeventfds(AddressSpace *as,
.size = int128_get64(fd->addr.size),
};
MEMORY_LISTENER_CALL(eventfd_add, Reverse, &section,
fd->match_data, fd->data, fd->fd);
fd->match_data, fd->data, fd->e);
++inew;
} else {
++iold;
@ -1195,14 +1195,14 @@ void memory_region_add_eventfd(MemoryRegion *mr,
unsigned size,
bool match_data,
uint64_t data,
int fd)
EventNotifier *e)
{
MemoryRegionIoeventfd mrfd = {
.addr.start = int128_make64(addr),
.addr.size = int128_make64(size),
.match_data = match_data,
.data = data,
.fd = fd,
.e = e,
};
unsigned i;
@ -1225,14 +1225,14 @@ void memory_region_del_eventfd(MemoryRegion *mr,
unsigned size,
bool match_data,
uint64_t data,
int fd)
EventNotifier *e)
{
MemoryRegionIoeventfd mrfd = {
.addr.start = int128_make64(addr),
.addr.size = int128_make64(size),
.match_data = match_data,
.data = data,
.fd = fd,
.e = e,
};
unsigned i;

9
memory.h
View File

@ -198,9 +198,9 @@ struct MemoryListener {
void (*log_global_start)(MemoryListener *listener);
void (*log_global_stop)(MemoryListener *listener);
void (*eventfd_add)(MemoryListener *listener, MemoryRegionSection *section,
bool match_data, uint64_t data, int fd);
bool match_data, uint64_t data, EventNotifier *e);
void (*eventfd_del)(MemoryListener *listener, MemoryRegionSection *section,
bool match_data, uint64_t data, int fd);
bool match_data, uint64_t data, EventNotifier *e);
/* Lower = earlier (during add), later (during del) */
unsigned priority;
MemoryRegion *address_space_filter;
@ -541,7 +541,7 @@ void memory_region_add_eventfd(MemoryRegion *mr,
unsigned size,
bool match_data,
uint64_t data,
int fd);
EventNotifier *e);
/**
* memory_region_del_eventfd: Cancel an eventfd.
@ -561,7 +561,8 @@ void memory_region_del_eventfd(MemoryRegion *mr,
unsigned size,
bool match_data,
uint64_t data,
int fd);
EventNotifier *e);
/**
* memory_region_add_subregion: Add a subregion to a container.
*

2
target-i386/cpu.c
View File

@ -77,7 +77,7 @@ static const char *ext3_feature_name[] = {
};
static const char *kvm_feature_name[] = {
"kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", "kvm_asyncpf", NULL, NULL, NULL,
"kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", "kvm_asyncpf", NULL, "kvm_pv_eoi", NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,

5
target-i386/cpu.h
View File

@ -400,6 +400,7 @@
#define CPUID_EXT_X2APIC (1 << 21)
#define CPUID_EXT_MOVBE (1 << 22)
#define CPUID_EXT_POPCNT (1 << 23)
#define CPUID_EXT_TSC_DEADLINE_TIMER (1 << 24)
#define CPUID_EXT_XSAVE (1 << 26)
#define CPUID_EXT_OSXSAVE (1 << 27)
#define CPUID_EXT_HYPERVISOR (1 << 31)
@ -477,6 +478,7 @@
for syscall instruction */
/* i386-specific interrupt pending bits. */
#define CPU_INTERRUPT_POLL CPU_INTERRUPT_TGT_EXT_1
#define CPU_INTERRUPT_SMI CPU_INTERRUPT_TGT_EXT_2
#define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_3
#define CPU_INTERRUPT_MCE CPU_INTERRUPT_TGT_EXT_4
@ -1047,7 +1049,8 @@ static inline void cpu_clone_regs(CPUX86State *env, target_ulong newsp)
static inline bool cpu_has_work(CPUX86State *env)
{
return ((env->interrupt_request & CPU_INTERRUPT_HARD) &&
return ((env->interrupt_request & (CPU_INTERRUPT_HARD |
CPU_INTERRUPT_POLL)) &&
(env->eflags & IF_MASK)) ||
(env->interrupt_request & (CPU_INTERRUPT_NMI |
CPU_INTERRUPT_INIT |

9
target-i386/kvm.c
View File

@ -361,8 +361,13 @@ int kvm_arch_init_vcpu(CPUX86State *env)
env->cpuid_features &= kvm_arch_get_supported_cpuid(s, 1, 0, R_EDX);
i = env->cpuid_ext_features & CPUID_EXT_HYPERVISOR;
j = env->cpuid_ext_features & CPUID_EXT_TSC_DEADLINE_TIMER;
env->cpuid_ext_features &= kvm_arch_get_supported_cpuid(s, 1, 0, R_ECX);
env->cpuid_ext_features |= i;
if (j && kvm_irqchip_in_kernel() &&
kvm_check_extension(s, KVM_CAP_TSC_DEADLINE_TIMER)) {
env->cpuid_ext_features |= CPUID_EXT_TSC_DEADLINE_TIMER;
}
env->cpuid_ext2_features &= kvm_arch_get_supported_cpuid(s, 0x80000001,
0, R_EDX);
@ -1727,6 +1732,10 @@ int kvm_arch_process_async_events(CPUX86State *env)
return 0;
}
if (env->interrupt_request & CPU_INTERRUPT_POLL) {
env->interrupt_request &= ~CPU_INTERRUPT_POLL;
apic_poll_irq(env->apic_state);
}
if (((env->interrupt_request & CPU_INTERRUPT_HARD) &&
(env->eflags & IF_MASK)) ||
(env->interrupt_request & CPU_INTERRUPT_NMI)) {

6
xen-all.c
View File

@ -560,13 +560,15 @@ 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)
bool match_data, uint64_t data,
EventNotifier *e)
{
}
static void xen_eventfd_del(MemoryListener *listener,
MemoryRegionSection *section,
bool match_data, uint64_t data, int fd)
bool match_data, uint64_t data,
EventNotifier *e)
{
}