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pci, pc, virtio, misc bugfixes

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A bunch of bugfixes - some of these will make sense for 2.1.2
 I put Cc: qemu-stable included where appropriate.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pci, pc, virtio, misc bugfixes

A bunch of bugfixes - some of these will make sense for 2.1.2
I put Cc: qemu-stable included where appropriate.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 18 Sep 2014 19:52:18 BST using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"

* remotes/mst/tags/for_upstream:
  pc: leave more space for BIOS allocations
  virtio-pci: fix migration for pci bus master
  vhost-user: fix VIRTIO_NET_F_MRG_RXBUF negotiation
  virtio-pci: enable bus master for old guests
  Revert "virtio: don't call device on !vm_running"
  virtio-net: drop assert on vm stop
  Revert "rng-egd: remove redundant free"
  qdev: Move global validation to a single function
  qdev: Rename qdev_prop_check_global() to qdev_prop_check_globals()
  test-qdev-global-props: Test handling of hotpluggable and non-device types
  test-qdev-global-props: Initialize not_used=true for all props
  test-qdev-global-props: Run tests on subprocess
  tests: disable global props test for old glib
  test-qdev-global-props: Trivial comment fix
  hw/machine: Free old values of string properties

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2014-09-18 20:02:00 +01:00
commit 10e11f4d2b
15 changed files with 236 additions and 75 deletions
Download patch file Download diff file Expand all files Collapse all files

8
hw/core/machine.c
View file

@ -24,6 +24,7 @@ static void machine_set_accel(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->accel);
ms->accel = g_strdup(value);
}
@ -79,6 +80,7 @@ static void machine_set_kernel(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->kernel_filename);
ms->kernel_filename = g_strdup(value);
}
@ -93,6 +95,7 @@ static void machine_set_initrd(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->initrd_filename);
ms->initrd_filename = g_strdup(value);
}
@ -107,6 +110,7 @@ static void machine_set_append(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->kernel_cmdline);
ms->kernel_cmdline = g_strdup(value);
}
@ -121,6 +125,7 @@ static void machine_set_dtb(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->dtb);
ms->dtb = g_strdup(value);
}
@ -135,6 +140,7 @@ static void machine_set_dumpdtb(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->dumpdtb);
ms->dumpdtb = g_strdup(value);
}
@ -176,6 +182,7 @@ static void machine_set_dt_compatible(Object *obj, const char *value, Error **er
{
MachineState *ms = MACHINE(obj);
g_free(ms->dt_compatible);
ms->dt_compatible = g_strdup(value);
}
@ -232,6 +239,7 @@ static void machine_set_firmware(Object *obj, const char *value, Error **errp)
{
MachineState *ms = MACHINE(obj);
g_free(ms->firmware);
ms->firmware = g_strdup(value);
}

18
hw/core/qdev-properties-system.c
View file

@ -388,28 +388,12 @@ void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd)
static int qdev_add_one_global(QemuOpts *opts, void *opaque)
{
GlobalProperty *g;
ObjectClass *oc;
g = g_malloc0(sizeof(*g));
g->driver = qemu_opt_get(opts, "driver");
g->property = qemu_opt_get(opts, "property");
g->value = qemu_opt_get(opts, "value");
oc = object_class_dynamic_cast(object_class_by_name(g->driver),
TYPE_DEVICE);
if (oc) {
DeviceClass *dc = DEVICE_CLASS(oc);
if (dc->hotpluggable) {
/* If hotpluggable then skip not_used checking. */
g->not_used = false;
} else {
/* Maybe a typo. */
g->not_used = true;
}
} else {
/* Maybe a typo. */
g->not_used = true;
}
g->user_provided = true;
qdev_prop_register_global(g);
return 0;
}

30
hw/core/qdev-properties.c
View file

@ -955,19 +955,35 @@ void qdev_prop_register_global_list(GlobalProperty *props)
}
}
int qdev_prop_check_global(void)
int qdev_prop_check_globals(void)
{
GlobalProperty *prop;
int ret = 0;
QTAILQ_FOREACH(prop, &global_props, next) {
if (!prop->not_used) {
ObjectClass *oc;
DeviceClass *dc;
if (prop->used) {
continue;
}
if (!prop->user_provided) {
continue;
}
oc = object_class_by_name(prop->driver);
oc = object_class_dynamic_cast(oc, TYPE_DEVICE);
if (!oc) {
error_report("Warning: global %s.%s has invalid class name",
prop->driver, prop->property);
ret = 1;
continue;
}
dc = DEVICE_CLASS(oc);
if (!dc->hotpluggable && !prop->used) {
error_report("Warning: global %s.%s=%s not used",
prop->driver, prop->property, prop->value);
ret = 1;
continue;
}
ret = 1;
error_report("Warning: \"-global %s.%s=%s\" not used",
prop->driver, prop->property, prop->value);
}
return ret;
}
@ -983,7 +999,7 @@ void qdev_prop_set_globals_for_type(DeviceState *dev, const char *typename,
if (strcmp(typename, prop->driver) != 0) {
continue;
}
prop->not_used = false;
prop->used = true;
object_property_parse(OBJECT(dev), prop->value, prop->property, &err);
if (err != NULL) {
error_propagate(errp, err);

6
hw/i386/pc.c
View file

@ -72,8 +72,10 @@
#define DPRINTF(fmt, ...)
#endif
/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables. */
unsigned acpi_data_size = 0x20000;
/* Leave a chunk of memory at the top of RAM for the BIOS ACPI tables
* (128K) and other BIOS datastructures (less than 4K reported to be used at
* the moment, 32K should be enough for a while). */
unsigned acpi_data_size = 0x20000 + 0x8000;
void pc_set_legacy_acpi_data_size(void)
{
acpi_data_size = 0x10000;

8
hw/net/vhost_net.c
View file

@ -163,11 +163,11 @@ struct vhost_net *vhost_net_init(VhostNetOptions *options)
if (r < 0) {
goto fail;
}
if (!qemu_has_vnet_hdr_len(options->net_backend,
sizeof(struct virtio_net_hdr_mrg_rxbuf))) {
net->dev.features &= ~(1 << VIRTIO_NET_F_MRG_RXBUF);
}
if (backend_kernel) {
if (!qemu_has_vnet_hdr_len(options->net_backend,
sizeof(struct virtio_net_hdr_mrg_rxbuf))) {
net->dev.features &= ~(1 << VIRTIO_NET_F_MRG_RXBUF);
}
if (~net->dev.features & net->dev.backend_features) {
fprintf(stderr, "vhost lacks feature mask %" PRIu64
" for backend\n",

2
hw/net/virtio-net.c
View file

@ -1125,8 +1125,6 @@ static int32_t virtio_net_flush_tx(VirtIONetQueue *q)
return num_packets;
}
assert(vdev->vm_running);
if (q->async_tx.elem.out_num) {
virtio_queue_set_notification(q->tx_vq, 0);
return num_packets;

45
hw/virtio/virtio-pci.c
View file

@ -86,9 +86,6 @@
* 12 is historical, and due to x86 page size. */
#define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12
/* Flags track per-device state like workarounds for quirks in older guests. */
#define VIRTIO_PCI_FLAG_BUS_MASTER_BUG (1 << 0)
static void virtio_pci_bus_new(VirtioBusState *bus, size_t bus_size,
VirtIOPCIProxy *dev);
@ -314,12 +311,14 @@ static void virtio_ioport_write(void *opaque, uint32_t addr, uint32_t val)
msix_unuse_all_vectors(&proxy->pci_dev);
}
/* Linux before 2.6.34 sets the device as OK without enabling
the PCI device bus master bit. In this case we need to disable
some safety checks. */
if ((val & VIRTIO_CONFIG_S_DRIVER_OK) &&
!(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG;
/* Linux before 2.6.34 drives the device without enabling
the PCI device bus master bit. Enable it automatically
for the guest. This is a PCI spec violation but so is
initiating DMA with bus master bit clear. */
if (val == (VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER)) {
pci_default_write_config(&proxy->pci_dev, PCI_COMMAND,
proxy->pci_dev.config[PCI_COMMAND] |
PCI_COMMAND_MASTER, 1);
}
break;
case VIRTIO_MSI_CONFIG_VECTOR:
@ -470,13 +469,18 @@ static void virtio_write_config(PCIDevice *pci_dev, uint32_t address,
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
uint8_t cmd = proxy->pci_dev.config[PCI_COMMAND];
pci_default_write_config(pci_dev, address, val, len);
if (range_covers_byte(address, len, PCI_COMMAND) &&
!(pci_dev->config[PCI_COMMAND] & PCI_COMMAND_MASTER) &&
!(proxy->flags & VIRTIO_PCI_FLAG_BUS_MASTER_BUG)) {
(cmd & PCI_COMMAND_MASTER)) {
/* Bus driver disables bus mastering - make it act
* as a kind of reset to render the device quiescent. */
virtio_pci_stop_ioeventfd(proxy);
virtio_set_status(vdev, vdev->status & ~VIRTIO_CONFIG_S_DRIVER_OK);
virtio_reset(vdev);
msix_unuse_all_vectors(&proxy->pci_dev);
}
}
@ -885,11 +889,19 @@ static void virtio_pci_vmstate_change(DeviceState *d, bool running)
VirtIODevice *vdev = virtio_bus_get_device(&proxy->bus);
if (running) {
/* Try to find out if the guest has bus master disabled, but is
in ready state. Then we have a buggy guest OS. */
if ((vdev->status & VIRTIO_CONFIG_S_DRIVER_OK) &&
!(proxy->pci_dev.config[PCI_COMMAND] & PCI_COMMAND_MASTER)) {
proxy->flags |= VIRTIO_PCI_FLAG_BUS_MASTER_BUG;
/* Linux before 2.6.34 drives the device without enabling
the PCI device bus master bit. Enable it automatically
for the guest. This is a PCI spec violation but so is
initiating DMA with bus master bit clear.
Note: this only makes a difference when migrating
across QEMU versions from an old QEMU, as for new QEMU
bus master and driver bits are always in sync.
TODO: consider enabling conditionally for compat machine types. */
if (vdev->status & (VIRTIO_CONFIG_S_ACKNOWLEDGE |
VIRTIO_CONFIG_S_DRIVER)) {
pci_default_write_config(&proxy->pci_dev, PCI_COMMAND,
proxy->pci_dev.config[PCI_COMMAND] |
PCI_COMMAND_MASTER, 1);
}
virtio_pci_start_ioeventfd(proxy);
} else {
@ -1030,7 +1042,6 @@ static void virtio_pci_reset(DeviceState *qdev)
virtio_pci_stop_ioeventfd(proxy);
virtio_bus_reset(bus);
msix_unuse_all_vectors(&proxy->pci_dev);
proxy->flags &= ~VIRTIO_PCI_FLAG_BUS_MASTER_BUG;
}
static Property virtio_pci_properties[] = {

9
hw/virtio/virtio.c
View file

@ -1108,10 +1108,7 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
bool backend_run = running && (vdev->status & VIRTIO_CONFIG_S_DRIVER_OK);
if (running) {
vdev->vm_running = running;
}
vdev->vm_running = running;
if (backend_run) {
virtio_set_status(vdev, vdev->status);
@ -1124,10 +1121,6 @@ static void virtio_vmstate_change(void *opaque, int running, RunState state)
if (!backend_run) {
virtio_set_status(vdev, vdev->status);
}
if (!running) {
vdev->vm_running = running;
}
}
void virtio_init(VirtIODevice *vdev, const char *name,