virtio devices support separate iothreads waiting for
events from file descriptors. These are asynchronous
events that can't be recorded and replayed, therefore
this patch disables ioeventfd for all devices when
record or replay is enabled.
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Message-Id: <
162125678869.
1252810.
4317416444097392406.stgit@pasha-ThinkPad-X280>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
#include "trace.h"
#include "hw/s390x/css-bridge.h"
#include "hw/s390x/s390-virtio-ccw.h"
+#include "sysemu/replay.h"
#define NR_CLASSIC_INDICATOR_BITS 64
dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
}
+ /* fd-based ioevents can't be synchronized in record/replay */
+ if (replay_mode != REPLAY_MODE_NONE) {
+ dev->flags &= ~VIRTIO_CCW_FLAG_USE_IOEVENTFD;
+ }
+
if (k->realize) {
k->realize(dev, &err);
if (err) {
#include "qemu/host-utils.h"
#include "qemu/module.h"
#include "sysemu/kvm.h"
+#include "sysemu/replay.h"
#include "hw/virtio/virtio-mmio.h"
#include "qemu/error-report.h"
#include "qemu/log.h"
proxy->flags &= ~VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD;
}
+ /* fd-based ioevents can't be synchronized in record/replay */
+ if (replay_mode != REPLAY_MODE_NONE) {
+ proxy->flags &= ~VIRTIO_IOMMIO_FLAG_USE_IOEVENTFD;
+ }
+
if (proxy->legacy) {
memory_region_init_io(&proxy->iomem, OBJECT(d),
&virtio_legacy_mem_ops, proxy,
#include "qemu/range.h"
#include "hw/virtio/virtio-bus.h"
#include "qapi/visitor.h"
+#include "sysemu/replay.h"
#define VIRTIO_PCI_REGION_SIZE(dev) VIRTIO_PCI_CONFIG_OFF(msix_present(dev))
proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
}
+ /* fd-based ioevents can't be synchronized in record/replay */
+ if (replay_mode != REPLAY_MODE_NONE) {
+ proxy->flags &= ~VIRTIO_PCI_FLAG_USE_IOEVENTFD;
+ }
+
/*
* virtio pci bar layout used by default.
* subclasses can re-arrange things if needed.