* [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring.
@ 2013-03-15 18:48 fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 01/10] virtio: make virtio device's structures public fred.konrad
` (9 more replies)
0 siblings, 10 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: peter.maydell, mst, mark.burton, cornelia.huck, afaerber,
fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
This is the next part of virtio-refactoring.
Basically it creates virtio-blk device which extends virtio-device.
Then a virtio-blk can be connected on a virtio-bus.
virtio-blk-pci, virtio-blk-s390x, virtio-blk-ccw are created too, they extend
respectively virtio-pci, virtio-s390-device, virtio-ccw-device and have a
virtio-blk.
You can checkout my branch here:
git://project.greensocs.com/qemu-virtio.git virtio-blk-v9
I made basic tests (with linux guests) on:
* qemu-system-i386
* qemu-system-s390x
Cornelia made virtio-ccw test, and Stefan tried dataplane.
Changes v8 -> v9:
* Fix the hot unplug issue spotted by Cornelia.
Changes v7 -> v8:
* Fix the allow_hotplug assertion spotted by Anthony.
* Attached the make virtio device's structures public (v4).
Changes v6 -> v7:
* Fix the DEFINE_VIRTIO_BLK_PROPERTIES macro issue spotted by Peter.
Thanks,
Fred
KONRAD Frederic (10):
virtio: make virtio device's structures public.
virtio-x-bus: fix allow_hotplug assertion.
virtio-blk: don't use pointer for configuration.
virtio-blk: add the virtio-blk device.
virtio-blk-pci: switch to new API.
virtio-blk-s390: switch to the new API.
virtio-blk-ccw switch to new API.
virtio-blk: cleanup: init and exit functions.
virtio-blk: cleanup: QOM cast
virtio-blk: cleanup: remove qdev field.
hw/s390x/s390-virtio-bus.c | 32 ++++++----
hw/s390x/s390-virtio-bus.h | 13 +++-
hw/s390x/virtio-ccw.c | 35 ++++++-----
hw/s390x/virtio-ccw.h | 14 ++++-
hw/virtio-balloon.c | 15 -----
hw/virtio-balloon.h | 14 +++++
hw/virtio-blk.c | 151 +++++++++++++++++++++++++--------------------
hw/virtio-blk.h | 39 ++++++++++++
hw/virtio-net.c | 50 ---------------
hw/virtio-net.h | 50 +++++++++++++++
hw/virtio-pci.c | 129 +++++++++++++++++---------------------
hw/virtio-pci.h | 15 ++++-
hw/virtio-rng.c | 19 ------
hw/virtio-rng.h | 19 ++++++
hw/virtio-scsi.c | 15 -----
hw/virtio-scsi.h | 16 +++++
hw/virtio-serial-bus.c | 41 ------------
hw/virtio-serial.h | 41 ++++++++++++
hw/virtio.h | 2 -
19 files changed, 400 insertions(+), 310 deletions(-)
--
1.7.11.7
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 01/10] virtio: make virtio device's structures public.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 02/10] virtio-x-bus: fix allow_hotplug assertion fred.konrad
` (8 subsequent siblings)
9 siblings, 0 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: Kevin Wolf, peter.maydell, mst, mark.burton, Amit Shah,
Stefan Hajnoczi, cornelia.huck, Paolo Bonzini, afaerber,
fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
These structures must be made public to avoid two memory allocations for
refactored virtio devices.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Changes V4 <- V3:
* Rebased on current git.
Changes V3 <- V2:
* Style correction spotted by Andreas (virtio-scsi.h).
* Style correction for virtio-net.h.
Changes V2 <- V1:
* Move the dataplane include into the header (virtio-blk).
---
hw/virtio-balloon.c | 15 ---------------
hw/virtio-balloon.h | 14 ++++++++++++++
hw/virtio-blk.c | 20 --------------------
hw/virtio-blk.h | 19 +++++++++++++++++++
hw/virtio-net.c | 50 --------------------------------------------------
hw/virtio-net.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
hw/virtio-rng.c | 19 -------------------
hw/virtio-rng.h | 19 +++++++++++++++++++
hw/virtio-scsi.c | 15 ---------------
hw/virtio-scsi.h | 16 ++++++++++++++++
hw/virtio-serial-bus.c | 41 -----------------------------------------
hw/virtio-serial.h | 41 +++++++++++++++++++++++++++++++++++++++++
12 files changed, 159 insertions(+), 160 deletions(-)
diff --git a/hw/virtio-balloon.c b/hw/virtio-balloon.c
index 6bfcddc..54a4372 100644
--- a/hw/virtio-balloon.c
+++ b/hw/virtio-balloon.c
@@ -29,21 +29,6 @@
#include <sys/mman.h>
#endif
-typedef struct VirtIOBalloon
-{
- VirtIODevice vdev;
- VirtQueue *ivq, *dvq, *svq;
- uint32_t num_pages;
- uint32_t actual;
- uint64_t stats[VIRTIO_BALLOON_S_NR];
- VirtQueueElement stats_vq_elem;
- size_t stats_vq_offset;
- QEMUTimer *stats_timer;
- int64_t stats_last_update;
- int64_t stats_poll_interval;
- DeviceState *qdev;
-} VirtIOBalloon;
-
static VirtIOBalloon *to_virtio_balloon(VirtIODevice *vdev)
{
return (VirtIOBalloon *)vdev;
diff --git a/hw/virtio-balloon.h b/hw/virtio-balloon.h
index f37f31b..b007042 100644
--- a/hw/virtio-balloon.h
+++ b/hw/virtio-balloon.h
@@ -52,4 +52,18 @@ typedef struct VirtIOBalloonStat {
uint64_t val;
} QEMU_PACKED VirtIOBalloonStat;
+typedef struct VirtIOBalloon {
+ VirtIODevice vdev;
+ VirtQueue *ivq, *dvq, *svq;
+ uint32_t num_pages;
+ uint32_t actual;
+ uint64_t stats[VIRTIO_BALLOON_S_NR];
+ VirtQueueElement stats_vq_elem;
+ size_t stats_vq_offset;
+ QEMUTimer *stats_timer;
+ int64_t stats_last_update;
+ int64_t stats_poll_interval;
+ DeviceState *qdev;
+} VirtIOBalloon;
+
#endif
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 6b69236..6714b01 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -17,31 +17,11 @@
#include "hw/block-common.h"
#include "sysemu/blockdev.h"
#include "hw/virtio-blk.h"
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
-#include "dataplane/virtio-blk.h"
-#endif
#include "hw/scsi-defs.h"
#ifdef __linux__
# include <scsi/sg.h>
#endif
-typedef struct VirtIOBlock
-{
- VirtIODevice vdev;
- BlockDriverState *bs;
- VirtQueue *vq;
- void *rq;
- QEMUBH *bh;
- BlockConf *conf;
- VirtIOBlkConf *blk;
- unsigned short sector_mask;
- DeviceState *qdev;
- VMChangeStateEntry *change;
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
- VirtIOBlockDataPlane *dataplane;
-#endif
-} VirtIOBlock;
-
static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev)
{
return (VirtIOBlock *)vdev;
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index 7ef2f35..19ec569 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -16,6 +16,9 @@
#include "hw/virtio.h"
#include "hw/block-common.h"
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+#include "dataplane/virtio-blk.h"
+#endif
/* from Linux's linux/virtio_blk.h */
@@ -108,6 +111,22 @@ struct VirtIOBlkConf
uint32_t data_plane;
};
+typedef struct VirtIOBlock {
+ VirtIODevice vdev;
+ BlockDriverState *bs;
+ VirtQueue *vq;
+ void *rq;
+ QEMUBH *bh;
+ BlockConf *conf;
+ VirtIOBlkConf *blk;
+ unsigned short sector_mask;
+ DeviceState *qdev;
+ VMChangeStateEntry *change;
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+ VirtIOBlockDataPlane *dataplane;
+#endif
+} VirtIOBlock;
+
#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
diff --git a/hw/virtio-net.c b/hw/virtio-net.c
index 8c9d871..4bb49eb 100644
--- a/hw/virtio-net.c
+++ b/hw/virtio-net.c
@@ -26,56 +26,6 @@
#define MAC_TABLE_ENTRIES 64
#define MAX_VLAN (1 << 12) /* Per 802.1Q definition */
-typedef struct VirtIONetQueue {
- VirtQueue *rx_vq;
- VirtQueue *tx_vq;
- QEMUTimer *tx_timer;
- QEMUBH *tx_bh;
- int tx_waiting;
- struct {
- VirtQueueElement elem;
- ssize_t len;
- } async_tx;
- struct VirtIONet *n;
-} VirtIONetQueue;
-
-typedef struct VirtIONet
-{
- VirtIODevice vdev;
- uint8_t mac[ETH_ALEN];
- uint16_t status;
- VirtIONetQueue *vqs;
- VirtQueue *ctrl_vq;
- NICState *nic;
- uint32_t tx_timeout;
- int32_t tx_burst;
- uint32_t has_vnet_hdr;
- size_t host_hdr_len;
- size_t guest_hdr_len;
- uint8_t has_ufo;
- int mergeable_rx_bufs;
- uint8_t promisc;
- uint8_t allmulti;
- uint8_t alluni;
- uint8_t nomulti;
- uint8_t nouni;
- uint8_t nobcast;
- uint8_t vhost_started;
- struct {
- int in_use;
- int first_multi;
- uint8_t multi_overflow;
- uint8_t uni_overflow;
- uint8_t *macs;
- } mac_table;
- uint32_t *vlans;
- DeviceState *qdev;
- int multiqueue;
- uint16_t max_queues;
- uint16_t curr_queues;
- size_t config_size;
-} VirtIONet;
-
/*
* Calculate the number of bytes up to and including the given 'field' of
* 'container'.
diff --git a/hw/virtio-net.h b/hw/virtio-net.h
index 0c83ca5..4d1a8cd 100644
--- a/hw/virtio-net.h
+++ b/hw/virtio-net.h
@@ -134,6 +134,56 @@ struct virtio_net_ctrl_mac {
uint32_t entries;
uint8_t macs[][ETH_ALEN];
};
+
+typedef struct VirtIONetQueue {
+ VirtQueue *rx_vq;
+ VirtQueue *tx_vq;
+ QEMUTimer *tx_timer;
+ QEMUBH *tx_bh;
+ int tx_waiting;
+ struct {
+ VirtQueueElement elem;
+ ssize_t len;
+ } async_tx;
+ struct VirtIONet *n;
+} VirtIONetQueue;
+
+typedef struct VirtIONet {
+ VirtIODevice vdev;
+ uint8_t mac[ETH_ALEN];
+ uint16_t status;
+ VirtIONetQueue *vqs;
+ VirtQueue *ctrl_vq;
+ NICState *nic;
+ uint32_t tx_timeout;
+ int32_t tx_burst;
+ uint32_t has_vnet_hdr;
+ size_t host_hdr_len;
+ size_t guest_hdr_len;
+ uint8_t has_ufo;
+ int mergeable_rx_bufs;
+ uint8_t promisc;
+ uint8_t allmulti;
+ uint8_t alluni;
+ uint8_t nomulti;
+ uint8_t nouni;
+ uint8_t nobcast;
+ uint8_t vhost_started;
+ struct {
+ int in_use;
+ int first_multi;
+ uint8_t multi_overflow;
+ uint8_t uni_overflow;
+ uint8_t *macs;
+ } mac_table;
+ uint32_t *vlans;
+ DeviceState *qdev;
+ int multiqueue;
+ uint16_t max_queues;
+ uint16_t curr_queues;
+ size_t config_size;
+} VirtIONet;
+
#define VIRTIO_NET_CTRL_MAC 1
#define VIRTIO_NET_CTRL_MAC_TABLE_SET 0
#define VIRTIO_NET_CTRL_MAC_ADDR_SET 1
diff --git a/hw/virtio-rng.c b/hw/virtio-rng.c
index 54c1421..fa8e8f3 100644
--- a/hw/virtio-rng.c
+++ b/hw/virtio-rng.c
@@ -16,25 +16,6 @@
#include "hw/virtio-rng.h"
#include "qemu/rng.h"
-typedef struct VirtIORNG {
- VirtIODevice vdev;
-
- DeviceState *qdev;
-
- /* Only one vq - guest puts buffer(s) on it when it needs entropy */
- VirtQueue *vq;
-
- VirtIORNGConf *conf;
-
- RngBackend *rng;
-
- /* We purposefully don't migrate this state. The quota will reset on the
- * destination as a result. Rate limiting is host state, not guest state.
- */
- QEMUTimer *rate_limit_timer;
- int64_t quota_remaining;
-} VirtIORNG;
-
static bool is_guest_ready(VirtIORNG *vrng)
{
if (virtio_queue_ready(vrng->vq)
diff --git a/hw/virtio-rng.h b/hw/virtio-rng.h
index f42d748..3711c97 100644
--- a/hw/virtio-rng.h
+++ b/hw/virtio-rng.h
@@ -25,4 +25,23 @@ struct VirtIORNGConf {
RndRandom *default_backend;
};
+typedef struct VirtIORNG {
+ VirtIODevice vdev;
+
+ DeviceState *qdev;
+
+ /* Only one vq - guest puts buffer(s) on it when it needs entropy */
+ VirtQueue *vq;
+
+ VirtIORNGConf *conf;
+
+ RngBackend *rng;
+
+ /* We purposefully don't migrate this state. The quota will reset on the
+ * destination as a result. Rate limiting is host state, not guest state.
+ */
+ QEMUTimer *rate_limit_timer;
+ int64_t quota_remaining;
+} VirtIORNG;
+
#endif
diff --git a/hw/virtio-scsi.c b/hw/virtio-scsi.c
index 72cc519..8620712 100644
--- a/hw/virtio-scsi.c
+++ b/hw/virtio-scsi.c
@@ -130,21 +130,6 @@ typedef struct {
uint32_t max_lun;
} QEMU_PACKED VirtIOSCSIConfig;
-typedef struct {
- VirtIODevice vdev;
- DeviceState *qdev;
- VirtIOSCSIConf *conf;
-
- SCSIBus bus;
- uint32_t sense_size;
- uint32_t cdb_size;
- int resetting;
- bool events_dropped;
- VirtQueue *ctrl_vq;
- VirtQueue *event_vq;
- VirtQueue *cmd_vqs[0];
-} VirtIOSCSI;
-
typedef struct VirtIOSCSIReq {
VirtIOSCSI *dev;
VirtQueue *vq;
diff --git a/hw/virtio-scsi.h b/hw/virtio-scsi.h
index 81b3279..ccf1e42 100644
--- a/hw/virtio-scsi.h
+++ b/hw/virtio-scsi.h
@@ -16,6 +16,7 @@
#include "hw/virtio.h"
#include "hw/pci/pci.h"
+#include "hw/scsi.h"
/* The ID for virtio_scsi */
#define VIRTIO_ID_SCSI 8
@@ -31,6 +32,21 @@ struct VirtIOSCSIConf {
uint32_t cmd_per_lun;
};
+typedef struct VirtIOSCSI {
+ VirtIODevice vdev;
+ DeviceState *qdev;
+ VirtIOSCSIConf *conf;
+
+ SCSIBus bus;
+ uint32_t sense_size;
+ uint32_t cdb_size;
+ int resetting;
+ bool events_dropped;
+ VirtQueue *ctrl_vq;
+ VirtQueue *event_vq;
+ VirtQueue *cmd_vqs[0];
+} VirtIOSCSI;
+
#define DEFINE_VIRTIO_SCSI_PROPERTIES(_state, _features_field, _conf_field) \
DEFINE_VIRTIO_COMMON_FEATURES(_state, _features_field), \
DEFINE_PROP_UINT32("num_queues", _state, _conf_field.num_queues, 1), \
diff --git a/hw/virtio-serial-bus.c b/hw/virtio-serial-bus.c
index 7d0515f..ab7168e 100644
--- a/hw/virtio-serial-bus.c
+++ b/hw/virtio-serial-bus.c
@@ -25,47 +25,6 @@
#include "trace.h"
#include "hw/virtio-serial.h"
-/* The virtio-serial bus on top of which the ports will ride as devices */
-struct VirtIOSerialBus {
- BusState qbus;
-
- /* This is the parent device that provides the bus for ports. */
- VirtIOSerial *vser;
-
- /* The maximum number of ports that can ride on top of this bus */
- uint32_t max_nr_ports;
-};
-
-typedef struct VirtIOSerialPostLoad {
- QEMUTimer *timer;
- uint32_t nr_active_ports;
- struct {
- VirtIOSerialPort *port;
- uint8_t host_connected;
- } *connected;
-} VirtIOSerialPostLoad;
-
-struct VirtIOSerial {
- VirtIODevice vdev;
-
- VirtQueue *c_ivq, *c_ovq;
- /* Arrays of ivqs and ovqs: one per port */
- VirtQueue **ivqs, **ovqs;
-
- VirtIOSerialBus bus;
-
- DeviceState *qdev;
-
- QTAILQ_HEAD(, VirtIOSerialPort) ports;
-
- /* bitmap for identifying active ports */
- uint32_t *ports_map;
-
- struct virtio_console_config config;
-
- struct VirtIOSerialPostLoad *post_load;
-};
-
static VirtIOSerialPort *find_port_by_id(VirtIOSerial *vser, uint32_t id)
{
VirtIOSerialPort *port;
diff --git a/hw/virtio-serial.h b/hw/virtio-serial.h
index d2d9fb7..484dcfe 100644
--- a/hw/virtio-serial.h
+++ b/hw/virtio-serial.h
@@ -173,6 +173,47 @@ struct VirtIOSerialPort {
bool throttled;
};
+/* The virtio-serial bus on top of which the ports will ride as devices */
+struct VirtIOSerialBus {
+ BusState qbus;
+
+ /* This is the parent device that provides the bus for ports. */
+ VirtIOSerial *vser;
+
+ /* The maximum number of ports that can ride on top of this bus */
+ uint32_t max_nr_ports;
+};
+
+typedef struct VirtIOSerialPostLoad {
+ QEMUTimer *timer;
+ uint32_t nr_active_ports;
+ struct {
+ VirtIOSerialPort *port;
+ uint8_t host_connected;
+ } *connected;
+} VirtIOSerialPostLoad;
+
+struct VirtIOSerial {
+ VirtIODevice vdev;
+
+ VirtQueue *c_ivq, *c_ovq;
+ /* Arrays of ivqs and ovqs: one per port */
+ VirtQueue **ivqs, **ovqs;
+
+ VirtIOSerialBus bus;
+
+ DeviceState *qdev;
+
+ QTAILQ_HEAD(, VirtIOSerialPort) ports;
+
+ /* bitmap for identifying active ports */
+ uint32_t *ports_map;
+
+ struct virtio_console_config config;
+
+ struct VirtIOSerialPostLoad *post_load;
+};
+
/* Interface to the virtio-serial bus */
/*
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 02/10] virtio-x-bus: fix allow_hotplug assertion.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 01/10] virtio: make virtio device's structures public fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 03/10] virtio-blk: don't use pointer for configuration fred.konrad
` (7 subsequent siblings)
9 siblings, 0 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: peter.maydell, mst, mark.burton, cornelia.huck, afaerber,
fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
This set allow_hotplug for each existing virtio-x-bus, allowing the
refactored devices to be hot pluggable.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
---
hw/s390x/s390-virtio-bus.c | 2 +-
hw/s390x/virtio-ccw.c | 2 +-
hw/virtio-pci.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c
index d9b7f83..8d4fd72 100644
--- a/hw/s390x/s390-virtio-bus.c
+++ b/hw/s390x/s390-virtio-bus.c
@@ -588,7 +588,7 @@ void virtio_s390_bus_new(VirtioBusState *bus, VirtIOS390Device *dev)
BusState *qbus;
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_S390_BUS, qdev, NULL);
qbus = BUS(bus);
- qbus->allow_hotplug = 0;
+ qbus->allow_hotplug = 1;
}
static void virtio_s390_bus_class_init(ObjectClass *klass, void *data)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index d4361f6..d80de67 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -982,7 +982,7 @@ void virtio_ccw_bus_new(VirtioBusState *bus, VirtioCcwDevice *dev)
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_CCW_BUS, qdev, NULL);
qbus = BUS(bus);
- qbus->allow_hotplug = 0;
+ qbus->allow_hotplug = 1;
}
static void virtio_ccw_bus_class_init(ObjectClass *klass, void *data)
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 39c1966..c795cc6 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -1484,7 +1484,7 @@ void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
BusState *qbus;
qbus_create_inplace((BusState *)bus, TYPE_VIRTIO_PCI_BUS, qdev, NULL);
qbus = BUS(bus);
- qbus->allow_hotplug = 0;
+ qbus->allow_hotplug = 1;
}
static void virtio_pci_bus_class_init(ObjectClass *klass, void *data)
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 03/10] virtio-blk: don't use pointer for configuration.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 01/10] virtio: make virtio device's structures public fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 02/10] virtio-x-bus: fix allow_hotplug assertion fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-18 8:59 ` Kevin Wolf
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 04/10] virtio-blk: add the virtio-blk device fred.konrad
` (6 subsequent siblings)
9 siblings, 1 reply; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: Kevin Wolf, peter.maydell, mst, mark.burton, Stefan Hajnoczi,
cornelia.huck, afaerber, fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
The configuration field must not be a pointer as it will be used for virtio-blk
properties. So *blk is replaced by blk in VirtIOBlock structure.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/virtio-blk.c | 8 ++++----
hw/virtio-blk.h | 2 +-
2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 6714b01..908c316 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -151,7 +151,7 @@ static void virtio_blk_handle_scsi(VirtIOBlockReq *req)
*/
req->scsi = (void *)req->elem.in_sg[req->elem.in_num - 2].iov_base;
- if (!req->dev->blk->scsi) {
+ if (!req->dev->blk.scsi) {
status = VIRTIO_BLK_S_UNSUPP;
goto fail;
}
@@ -371,7 +371,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
* terminated by '\0' only when shorter than buffer.
*/
strncpy(req->elem.in_sg[0].iov_base,
- s->blk->serial ? s->blk->serial : "",
+ s->blk.serial ? s->blk.serial : "",
MIN(req->elem.in_sg[0].iov_len, VIRTIO_BLK_ID_BYTES));
virtio_blk_req_complete(req, VIRTIO_BLK_S_OK);
g_free(req);
@@ -534,7 +534,7 @@ static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
features |= (1 << VIRTIO_BLK_F_BLK_SIZE);
features |= (1 << VIRTIO_BLK_F_SCSI);
- if (s->blk->config_wce) {
+ if (s->blk.config_wce) {
features |= (1 << VIRTIO_BLK_F_CONFIG_WCE);
}
if (bdrv_enable_write_cache(s->bs))
@@ -650,7 +650,7 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
s->vdev.reset = virtio_blk_reset;
s->bs = blk->conf.bs;
s->conf = &blk->conf;
- s->blk = blk;
+ memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
s->rq = NULL;
s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index 19ec569..b704d50 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -118,7 +118,7 @@ typedef struct VirtIOBlock {
void *rq;
QEMUBH *bh;
BlockConf *conf;
- VirtIOBlkConf *blk;
+ VirtIOBlkConf blk;
unsigned short sector_mask;
DeviceState *qdev;
VMChangeStateEntry *change;
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 04/10] virtio-blk: add the virtio-blk device.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
` (2 preceding siblings ...)
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 03/10] virtio-blk: don't use pointer for configuration fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 05/10] virtio-blk-pci: switch to new API fred.konrad
` (5 subsequent siblings)
9 siblings, 0 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: Kevin Wolf, peter.maydell, mst, mark.burton, Stefan Hajnoczi,
cornelia.huck, afaerber, fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
Create virtio-blk which extends virtio-device, so it can be connected on
virtio-bus.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/virtio-blk.c | 98 ++++++++++++++++++++++++++++++++++++++++++++++++++++++---
hw/virtio-blk.h | 21 +++++++++++++
hw/virtio-pci.c | 8 +----
3 files changed, 115 insertions(+), 12 deletions(-)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 908c316..3622bb9 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -21,7 +21,11 @@
#ifdef __linux__
# include <scsi/sg.h>
#endif
+#include "hw/virtio-bus.h"
+/*
+ * Moving to QOM later in this series.
+ */
static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev)
{
return (VirtIOBlock *)vdev;
@@ -620,9 +624,16 @@ static const BlockDevOps virtio_block_ops = {
.resize_cb = virtio_blk_resize,
};
-VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
+void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk)
{
- VirtIOBlock *s;
+ VirtIOBlock *s = VIRTIO_BLK(dev);
+ memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
+}
+
+static VirtIODevice *virtio_blk_common_init(DeviceState *dev,
+ VirtIOBlkConf *blk, VirtIOBlock **ps)
+{
+ VirtIOBlock *s = *ps;
static int virtio_blk_id;
if (!blk->conf.bs) {
@@ -639,9 +650,20 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
return NULL;
}
- s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
- sizeof(struct virtio_blk_config),
- sizeof(VirtIOBlock));
+ /*
+ * We have two cases here: the old virtio-blk-pci device, and the
+ * refactored virtio-blk.
+ */
+ if (s == NULL) {
+ /* virtio-blk-pci */
+ s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
+ sizeof(struct virtio_blk_config),
+ sizeof(VirtIOBlock));
+ } else {
+ /* virtio-blk */
+ virtio_init(VIRTIO_DEVICE(s), "virtio-blk", VIRTIO_ID_BLOCK,
+ sizeof(struct virtio_blk_config));
+ }
s->vdev.get_config = virtio_blk_update_config;
s->vdev.set_config = virtio_blk_set_config;
@@ -675,6 +697,12 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
return &s->vdev;
}
+VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
+{
+ VirtIOBlock *s = NULL;
+ return virtio_blk_common_init(dev, blk, &s);
+}
+
void virtio_blk_exit(VirtIODevice *vdev)
{
VirtIOBlock *s = to_virtio_blk(vdev);
@@ -688,3 +716,63 @@ void virtio_blk_exit(VirtIODevice *vdev)
blockdev_mark_auto_del(s->bs);
virtio_cleanup(vdev);
}
+
+
+static int virtio_blk_device_init(VirtIODevice *vdev)
+{
+ DeviceState *qdev = DEVICE(vdev);
+ VirtIOBlock *s = VIRTIO_BLK(vdev);
+ VirtIOBlkConf *blk = &(s->blk);
+ if (virtio_blk_common_init(qdev, blk, &s) == NULL) {
+ return -1;
+ }
+ return 0;
+}
+
+static int virtio_blk_device_exit(DeviceState *dev)
+{
+ VirtIODevice *vdev = VIRTIO_DEVICE(dev);
+ VirtIOBlock *s = VIRTIO_BLK(dev);
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+ virtio_blk_data_plane_destroy(s->dataplane);
+ s->dataplane = NULL;
+#endif
+ qemu_del_vm_change_state_handler(s->change);
+ unregister_savevm(s->qdev, "virtio-blk", s);
+ blockdev_mark_auto_del(s->bs);
+ virtio_common_cleanup(vdev);
+ return 0;
+}
+
+static Property virtio_blk_properties[] = {
+ DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlock, blk),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static void virtio_blk_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
+ dc->exit = virtio_blk_device_exit;
+ dc->props = virtio_blk_properties;
+ vdc->init = virtio_blk_device_init;
+ vdc->get_config = virtio_blk_update_config;
+ vdc->set_config = virtio_blk_set_config;
+ vdc->get_features = virtio_blk_get_features;
+ vdc->set_status = virtio_blk_set_status;
+ vdc->reset = virtio_blk_reset;
+}
+
+static const TypeInfo virtio_device_info = {
+ .name = TYPE_VIRTIO_BLK,
+ .parent = TYPE_VIRTIO_DEVICE,
+ .instance_size = sizeof(VirtIOBlock),
+ .class_init = virtio_blk_class_init,
+};
+
+static void virtio_register_types(void)
+{
+ type_register_static(&virtio_device_info);
+}
+
+type_init(virtio_register_types)
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index b704d50..a040c01 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -20,6 +20,10 @@
#include "dataplane/virtio-blk.h"
#endif
+#define TYPE_VIRTIO_BLK "virtio-blk"
+#define VIRTIO_BLK(obj) \
+ OBJECT_CHECK(VirtIOBlock, (obj), TYPE_VIRTIO_BLK)
+
/* from Linux's linux/virtio_blk.h */
/* The ID for virtio_block */
@@ -130,4 +134,21 @@ typedef struct VirtIOBlock {
#define DEFINE_VIRTIO_BLK_FEATURES(_state, _field) \
DEFINE_VIRTIO_COMMON_FEATURES(_state, _field)
+#ifdef __linux__
+#define DEFINE_VIRTIO_BLK_PROPERTIES(_state, _field) \
+ DEFINE_BLOCK_PROPERTIES(_state, _field.conf), \
+ DEFINE_BLOCK_CHS_PROPERTIES(_state, _field.conf), \
+ DEFINE_PROP_STRING("serial", _state, _field.serial), \
+ DEFINE_PROP_BIT("config-wce", _state, _field.config_wce, 0, true), \
+ DEFINE_PROP_BIT("scsi", _state, _field.scsi, 0, true)
+#else
+#define DEFINE_VIRTIO_BLK_PROPERTIES(_state, _field) \
+ DEFINE_BLOCK_PROPERTIES(_state, _field.conf), \
+ DEFINE_BLOCK_CHS_PROPERTIES(_state, _field.conf), \
+ DEFINE_PROP_STRING("serial", _state, _field.serial), \
+ DEFINE_PROP_BIT("config-wce", _state, _field.config_wce, 0, true)
+#endif /* __linux__ */
+
+void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk);
+
#endif
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index c795cc6..2160cb8 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -1084,19 +1084,13 @@ static void virtio_rng_exit_pci(PCIDevice *pci_dev)
static Property virtio_blk_properties[] = {
DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
- DEFINE_BLOCK_PROPERTIES(VirtIOPCIProxy, blk.conf),
- DEFINE_BLOCK_CHS_PROPERTIES(VirtIOPCIProxy, blk.conf),
- DEFINE_PROP_STRING("serial", VirtIOPCIProxy, blk.serial),
-#ifdef __linux__
- DEFINE_PROP_BIT("scsi", VirtIOPCIProxy, blk.scsi, 0, true),
-#endif
- DEFINE_PROP_BIT("config-wce", VirtIOPCIProxy, blk.config_wce, 0, true),
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
DEFINE_PROP_BIT("x-data-plane", VirtIOPCIProxy, blk.data_plane, 0, false),
#endif
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
+ DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOPCIProxy, blk),
DEFINE_PROP_END_OF_LIST(),
};
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 05/10] virtio-blk-pci: switch to new API.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
` (3 preceding siblings ...)
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 04/10] virtio-blk: add the virtio-blk device fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-18 13:01 ` Anthony Liguori
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 06/10] virtio-blk-s390: switch to the " fred.konrad
` (4 subsequent siblings)
9 siblings, 1 reply; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: peter.maydell, mst, mark.burton, cornelia.huck, afaerber,
fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
Here the virtio-blk-pci is modified for the new API. The device
virtio-blk-pci extends virtio-pci. It creates and connects a virtio-blk
during the init. The properties are not changed.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/virtio-pci.c | 121 ++++++++++++++++++++++++++------------------------------
hw/virtio-pci.h | 15 ++++++-
2 files changed, 71 insertions(+), 65 deletions(-)
diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
index 2160cb8..0095a32 100644
--- a/hw/virtio-pci.c
+++ b/hw/virtio-pci.c
@@ -924,26 +924,6 @@ void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
proxy->host_features = vdev->get_features(vdev, proxy->host_features);
}
-static int virtio_blk_init_pci(PCIDevice *pci_dev)
-{
- VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
- VirtIODevice *vdev;
-
- if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
- proxy->class_code != PCI_CLASS_STORAGE_OTHER)
- proxy->class_code = PCI_CLASS_STORAGE_SCSI;
-
- vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk);
- if (!vdev) {
- return -1;
- }
- vdev->nvectors = proxy->nvectors;
- virtio_init_pci(proxy, vdev);
- /* make the actual value visible */
- proxy->nvectors = vdev->nvectors;
- return 0;
-}
-
static void virtio_exit_pci(PCIDevice *pci_dev)
{
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
@@ -952,15 +932,6 @@ static void virtio_exit_pci(PCIDevice *pci_dev)
msix_uninit_exclusive_bar(pci_dev);
}
-static void virtio_blk_exit_pci(PCIDevice *pci_dev)
-{
- VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
-
- virtio_pci_stop_ioeventfd(proxy);
- virtio_blk_exit(proxy->vdev);
- virtio_exit_pci(pci_dev);
-}
-
static int virtio_serial_init_pci(PCIDevice *pci_dev)
{
VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
@@ -1082,40 +1053,6 @@ static void virtio_rng_exit_pci(PCIDevice *pci_dev)
virtio_exit_pci(pci_dev);
}
-static Property virtio_blk_properties[] = {
- DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
- DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
- DEFINE_PROP_BIT("x-data-plane", VirtIOPCIProxy, blk.data_plane, 0, false),
-#endif
- DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
- DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
- DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOPCIProxy, blk),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void virtio_blk_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
- k->init = virtio_blk_init_pci;
- k->exit = virtio_blk_exit_pci;
- k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
- k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
- k->revision = VIRTIO_PCI_ABI_VERSION;
- k->class_id = PCI_CLASS_STORAGE_SCSI;
- dc->reset = virtio_pci_reset;
- dc->props = virtio_blk_properties;
-}
-
-static const TypeInfo virtio_blk_info = {
- .name = "virtio-blk-pci",
- .parent = TYPE_PCI_DEVICE,
- .instance_size = sizeof(VirtIOPCIProxy),
- .class_init = virtio_blk_class_init,
-};
-
static Property virtio_net_properties[] = {
DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
@@ -1470,6 +1407,62 @@ static const TypeInfo virtio_pci_info = {
.abstract = true,
};
+/* virtio-blk-pci */
+
+static Property virtio_blk_pci_properties[] = {
+ DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
+ DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
+ VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
+ DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
+#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
+ DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI, blk.data_plane, 0, false),
+#endif
+ DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
+ DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI, blk),
+ DEFINE_PROP_END_OF_LIST(),
+};
+
+static int virtio_blk_pci_init(VirtIOPCIProxy *vpci_dev)
+{
+ VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev);
+ DeviceState *vdev = DEVICE(&dev->vdev);
+ virtio_blk_set_conf(vdev, &(dev->blk));
+ qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
+ if (qdev_init(vdev) < 0) {
+ return -1;
+ }
+ return 0;
+}
+
+static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
+ PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
+
+ dc->props = virtio_blk_pci_properties;
+ k->init = virtio_blk_pci_init;
+ pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
+ pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
+ pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
+ pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
+}
+
+static void virtio_blk_pci_instance_init(Object *obj)
+{
+ VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
+ object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
+ object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
+}
+
+static const TypeInfo virtio_blk_pci_info = {
+ .name = TYPE_VIRTIO_BLK_PCI,
+ .parent = TYPE_VIRTIO_PCI,
+ .instance_size = sizeof(VirtIOBlkPCI),
+ .instance_init = virtio_blk_pci_instance_init,
+ .class_init = virtio_blk_pci_class_init,
+};
+
/* virtio-pci-bus */
void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
@@ -1509,7 +1502,6 @@ static const TypeInfo virtio_pci_bus_info = {
static void virtio_pci_register_types(void)
{
- type_register_static(&virtio_blk_info);
type_register_static(&virtio_net_info);
type_register_static(&virtio_serial_info);
type_register_static(&virtio_balloon_info);
@@ -1520,6 +1512,7 @@ static void virtio_pci_register_types(void)
#ifdef CONFIG_VIRTFS
type_register_static(&virtio_9p_info);
#endif
+ type_register_static(&virtio_blk_pci_info);
}
type_init(virtio_pci_register_types)
diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h
index 2ae96f8..a9dbfff 100644
--- a/hw/virtio-pci.h
+++ b/hw/virtio-pci.h
@@ -25,6 +25,7 @@
#include "hw/9pfs/virtio-9p-device.h"
typedef struct VirtIOPCIProxy VirtIOPCIProxy;
+typedef struct VirtIOBlkPCI VirtIOBlkPCI;
/* virtio-pci-bus */
@@ -73,7 +74,6 @@ struct VirtIOPCIProxy {
uint32_t flags;
uint32_t class_code;
uint32_t nvectors;
- VirtIOBlkConf blk;
NICConf nic;
uint32_t host_features;
#ifdef CONFIG_VIRTFS
@@ -90,6 +90,19 @@ struct VirtIOPCIProxy {
VirtioBusState bus;
};
+/*
+ * virtio-blk-pci: This extends VirtioPCIProxy.
+ */
+#define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
+#define VIRTIO_BLK_PCI(obj) \
+ OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
+
+struct VirtIOBlkPCI {
+ VirtIOPCIProxy parent_obj;
+ VirtIOBlock vdev;
+ VirtIOBlkConf blk;
+};
+
void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 06/10] virtio-blk-s390: switch to the new API.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
` (4 preceding siblings ...)
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 05/10] virtio-blk-pci: switch to new API fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 07/10] virtio-blk-ccw switch to " fred.konrad
` (3 subsequent siblings)
9 siblings, 0 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: peter.maydell, mst, mark.burton, cornelia.huck, afaerber,
fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
Here the virtio-blk-s390 is modified for the new API. The device
virtio-blk-s390 extends virtio-s390-device as before. It creates and
connects a virtio-blk during the init. The properties are not modified.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/s390x/s390-virtio-bus.c | 30 +++++++++++++++++++-----------
hw/s390x/s390-virtio-bus.h | 13 ++++++++++++-
2 files changed, 31 insertions(+), 12 deletions(-)
diff --git a/hw/s390x/s390-virtio-bus.c b/hw/s390x/s390-virtio-bus.c
index 8d4fd72..76bc99a 100644
--- a/hw/s390x/s390-virtio-bus.c
+++ b/hw/s390x/s390-virtio-bus.c
@@ -162,16 +162,23 @@ static int s390_virtio_net_init(VirtIOS390Device *dev)
return s390_virtio_device_init(dev, vdev);
}
-static int s390_virtio_blk_init(VirtIOS390Device *dev)
+static int s390_virtio_blk_init(VirtIOS390Device *s390_dev)
{
- VirtIODevice *vdev;
-
- vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
- if (!vdev) {
+ VirtIOBlkS390 *dev = VIRTIO_BLK_S390(s390_dev);
+ DeviceState *vdev = DEVICE(&dev->vdev);
+ virtio_blk_set_conf(vdev, &(dev->blk));
+ qdev_set_parent_bus(vdev, BUS(&s390_dev->bus));
+ if (qdev_init(vdev) < 0) {
return -1;
}
+ return s390_virtio_device_init(s390_dev, VIRTIO_DEVICE(vdev));
+}
- return s390_virtio_device_init(dev, vdev);
+static void s390_virtio_blk_instance_init(Object *obj)
+{
+ VirtIOBlkS390 *dev = VIRTIO_BLK_S390(obj);
+ object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
+ object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
}
static int s390_virtio_serial_init(VirtIOS390Device *dev)
@@ -428,11 +435,11 @@ static const TypeInfo s390_virtio_net = {
};
static Property s390_virtio_blk_properties[] = {
- DEFINE_BLOCK_PROPERTIES(VirtIOS390Device, blk.conf),
- DEFINE_BLOCK_CHS_PROPERTIES(VirtIOS390Device, blk.conf),
- DEFINE_PROP_STRING("serial", VirtIOS390Device, blk.serial),
+ DEFINE_BLOCK_PROPERTIES(VirtIOBlkS390, blk.conf),
+ DEFINE_BLOCK_CHS_PROPERTIES(VirtIOBlkS390, blk.conf),
+ DEFINE_PROP_STRING("serial", VirtIOBlkS390, blk.serial),
#ifdef __linux__
- DEFINE_PROP_BIT("scsi", VirtIOS390Device, blk.scsi, 0, true),
+ DEFINE_PROP_BIT("scsi", VirtIOBlkS390, blk.scsi, 0, true),
#endif
DEFINE_PROP_END_OF_LIST(),
};
@@ -449,7 +456,8 @@ static void s390_virtio_blk_class_init(ObjectClass *klass, void *data)
static const TypeInfo s390_virtio_blk = {
.name = "virtio-blk-s390",
.parent = TYPE_VIRTIO_S390_DEVICE,
- .instance_size = sizeof(VirtIOS390Device),
+ .instance_size = sizeof(VirtIOBlkS390),
+ .instance_init = s390_virtio_blk_instance_init,
.class_init = s390_virtio_blk_class_init,
};
diff --git a/hw/s390x/s390-virtio-bus.h b/hw/s390x/s390-virtio-bus.h
index 4aacf83..1a63411 100644
--- a/hw/s390x/s390-virtio-bus.h
+++ b/hw/s390x/s390-virtio-bus.h
@@ -89,7 +89,6 @@ struct VirtIOS390Device {
ram_addr_t feat_offs;
uint8_t feat_len;
VirtIODevice *vdev;
- VirtIOBlkConf blk;
NICConf nic;
uint32_t host_features;
virtio_serial_conf serial;
@@ -120,5 +119,17 @@ VirtIOS390Device *s390_virtio_bus_find_mem(VirtIOS390Bus *bus, ram_addr_t mem);
void s390_virtio_device_sync(VirtIOS390Device *dev);
void s390_virtio_reset_idx(VirtIOS390Device *dev);
+/* virtio-blk-s390 */
+
+#define TYPE_VIRTIO_BLK_S390 "virtio-blk-s390"
+#define VIRTIO_BLK_S390(obj) \
+ OBJECT_CHECK(VirtIOBlkS390, (obj), TYPE_VIRTIO_BLK_S390)
+
+typedef struct VirtIOBlkS390 {
+ VirtIOS390Device parent_obj;
+ VirtIOBlock vdev;
+ VirtIOBlkConf blk;
+} VirtIOBlkS390;
+
#endif
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 07/10] virtio-blk-ccw switch to new API.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
` (5 preceding siblings ...)
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 06/10] virtio-blk-s390: switch to the " fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 08/10] virtio-blk: cleanup: init and exit functions fred.konrad
` (2 subsequent siblings)
9 siblings, 0 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: peter.maydell, mst, mark.burton, cornelia.huck, afaerber,
fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
Here the virtio-ccw-s390 is modified for the new API. The device
virtio-ccw-s390 extends virtio-ccw-device as before. It creates and
connects a virtio-ccw during the init. The properties are not modified.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/s390x/virtio-ccw.c | 33 ++++++++++++++++++---------------
hw/s390x/virtio-ccw.h | 14 +++++++++++++-
2 files changed, 31 insertions(+), 16 deletions(-)
diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index d80de67..9688835 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -570,22 +570,24 @@ static int virtio_ccw_net_exit(VirtioCcwDevice *dev)
return virtio_ccw_exit(dev);
}
-static int virtio_ccw_blk_init(VirtioCcwDevice *dev)
+static int virtio_ccw_blk_init(VirtioCcwDevice *ccw_dev)
{
- VirtIODevice *vdev;
-
- vdev = virtio_blk_init((DeviceState *)dev, &dev->blk);
- if (!vdev) {
+ VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(ccw_dev);
+ DeviceState *vdev = DEVICE(&dev->vdev);
+ virtio_blk_set_conf(vdev, &(dev->blk));
+ qdev_set_parent_bus(vdev, BUS(&ccw_dev->bus));
+ if (qdev_init(vdev) < 0) {
return -1;
}
- return virtio_ccw_device_init(dev, vdev);
+ return virtio_ccw_device_init(ccw_dev, VIRTIO_DEVICE(vdev));
}
-static int virtio_ccw_blk_exit(VirtioCcwDevice *dev)
+static void virtio_ccw_blk_instance_init(Object *obj)
{
- virtio_blk_exit(dev->vdev);
- return virtio_ccw_exit(dev);
+ VirtIOBlkCcw *dev = VIRTIO_BLK_CCW(obj);
+ object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
+ object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
}
static int virtio_ccw_serial_init(VirtioCcwDevice *dev)
@@ -754,10 +756,10 @@ static const TypeInfo virtio_ccw_net = {
static Property virtio_ccw_blk_properties[] = {
DEFINE_PROP_STRING("devno", VirtioCcwDevice, bus_id),
- DEFINE_BLOCK_PROPERTIES(VirtioCcwDevice, blk.conf),
- DEFINE_PROP_STRING("serial", VirtioCcwDevice, blk.serial),
+ DEFINE_BLOCK_PROPERTIES(VirtIOBlkCcw, blk.conf),
+ DEFINE_PROP_STRING("serial", VirtIOBlkCcw, blk.serial),
#ifdef __linux__
- DEFINE_PROP_BIT("scsi", VirtioCcwDevice, blk.scsi, 0, true),
+ DEFINE_PROP_BIT("scsi", VirtIOBlkCcw, blk.scsi, 0, true),
#endif
DEFINE_VIRTIO_BLK_FEATURES(VirtioCcwDevice, host_features[0]),
DEFINE_PROP_END_OF_LIST(),
@@ -769,15 +771,16 @@ static void virtio_ccw_blk_class_init(ObjectClass *klass, void *data)
VirtIOCCWDeviceClass *k = VIRTIO_CCW_DEVICE_CLASS(klass);
k->init = virtio_ccw_blk_init;
- k->exit = virtio_ccw_blk_exit;
+ k->exit = virtio_ccw_exit;
dc->reset = virtio_ccw_reset;
dc->props = virtio_ccw_blk_properties;
}
static const TypeInfo virtio_ccw_blk = {
- .name = "virtio-blk-ccw",
+ .name = TYPE_VIRTIO_BLK_CCW,
.parent = TYPE_VIRTIO_CCW_DEVICE,
- .instance_size = sizeof(VirtioCcwDevice),
+ .instance_size = sizeof(VirtIOBlkCcw),
+ .instance_init = virtio_ccw_blk_instance_init,
.class_init = virtio_ccw_blk_class_init,
};
diff --git a/hw/s390x/virtio-ccw.h b/hw/s390x/virtio-ccw.h
index 88c46c0..3993bc5 100644
--- a/hw/s390x/virtio-ccw.h
+++ b/hw/s390x/virtio-ccw.h
@@ -72,7 +72,6 @@ struct VirtioCcwDevice {
SubchDev *sch;
VirtIODevice *vdev;
char *bus_id;
- VirtIOBlkConf blk;
NICConf nic;
uint32_t host_features[VIRTIO_CCW_FEATURE_SIZE];
virtio_serial_conf serial;
@@ -94,6 +93,19 @@ typedef struct VirtualCssBus {
#define VIRTUAL_CSS_BUS(obj) \
OBJECT_CHECK(VirtualCssBus, (obj), TYPE_VIRTUAL_CSS_BUS)
+/* virtio-blk-ccw */
+
+#define TYPE_VIRTIO_BLK_CCW "virtio-blk-ccw"
+#define VIRTIO_BLK_CCW(obj) \
+ OBJECT_CHECK(VirtIOBlkCcw, (obj), TYPE_VIRTIO_BLK_CCW)
+
+typedef struct VirtIOBlkCcw {
+ VirtioCcwDevice parent_obj;
+ VirtIOBlock vdev;
+ VirtIOBlkConf blk;
+} VirtIOBlkCcw;
+
+
VirtualCssBus *virtual_css_bus_init(void);
void virtio_ccw_device_update_status(SubchDev *sch);
VirtIODevice *virtio_ccw_get_vdev(SubchDev *sch);
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 08/10] virtio-blk: cleanup: init and exit functions.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
` (6 preceding siblings ...)
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 07/10] virtio-blk-ccw switch to " fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 09/10] virtio-blk: cleanup: QOM cast fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 10/10] virtio-blk: cleanup: remove qdev field fred.konrad
9 siblings, 0 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: Kevin Wolf, peter.maydell, mst, mark.burton, Stefan Hajnoczi,
cornelia.huck, afaerber, fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
As all virtio-blk-* are switched to the new API, we can remove the separate
init/exit for the old API.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/virtio-blk.c | 85 ++++++++++++++-------------------------------------------
hw/virtio.h | 2 --
2 files changed, 21 insertions(+), 66 deletions(-)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 3622bb9..9e7cd1f 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -630,102 +630,59 @@ void virtio_blk_set_conf(DeviceState *dev, VirtIOBlkConf *blk)
memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
}
-static VirtIODevice *virtio_blk_common_init(DeviceState *dev,
- VirtIOBlkConf *blk, VirtIOBlock **ps)
+static int virtio_blk_device_init(VirtIODevice *vdev)
{
- VirtIOBlock *s = *ps;
+ DeviceState *qdev = DEVICE(vdev);
+ VirtIOBlock *s = VIRTIO_BLK(vdev);
+ VirtIOBlkConf *blk = &(s->blk);
static int virtio_blk_id;
if (!blk->conf.bs) {
error_report("drive property not set");
- return NULL;
+ return -1;
}
if (!bdrv_is_inserted(blk->conf.bs)) {
error_report("Device needs media, but drive is empty");
- return NULL;
+ return -1;
}
blkconf_serial(&blk->conf, &blk->serial);
if (blkconf_geometry(&blk->conf, NULL, 65535, 255, 255) < 0) {
- return NULL;
+ return -1;
}
- /*
- * We have two cases here: the old virtio-blk-pci device, and the
- * refactored virtio-blk.
- */
- if (s == NULL) {
- /* virtio-blk-pci */
- s = (VirtIOBlock *)virtio_common_init("virtio-blk", VIRTIO_ID_BLOCK,
- sizeof(struct virtio_blk_config),
- sizeof(VirtIOBlock));
- } else {
- /* virtio-blk */
- virtio_init(VIRTIO_DEVICE(s), "virtio-blk", VIRTIO_ID_BLOCK,
- sizeof(struct virtio_blk_config));
- }
+ virtio_init(vdev, "virtio-blk", VIRTIO_ID_BLOCK,
+ sizeof(struct virtio_blk_config));
- s->vdev.get_config = virtio_blk_update_config;
- s->vdev.set_config = virtio_blk_set_config;
- s->vdev.get_features = virtio_blk_get_features;
- s->vdev.set_status = virtio_blk_set_status;
- s->vdev.reset = virtio_blk_reset;
+ vdev->get_config = virtio_blk_update_config;
+ vdev->set_config = virtio_blk_set_config;
+ vdev->get_features = virtio_blk_get_features;
+ vdev->set_status = virtio_blk_set_status;
+ vdev->reset = virtio_blk_reset;
s->bs = blk->conf.bs;
s->conf = &blk->conf;
memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
s->rq = NULL;
s->sector_mask = (s->conf->logical_block_size / BDRV_SECTOR_SIZE) - 1;
- s->vq = virtio_add_queue(&s->vdev, 128, virtio_blk_handle_output);
+ s->vq = virtio_add_queue(vdev, 128, virtio_blk_handle_output);
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
- if (!virtio_blk_data_plane_create(&s->vdev, blk, &s->dataplane)) {
- virtio_cleanup(&s->vdev);
- return NULL;
+ if (!virtio_blk_data_plane_create(vdev, blk, &s->dataplane)) {
+ virtio_cleanup(vdev);
+ return -1;
}
#endif
s->change = qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
- s->qdev = dev;
- register_savevm(dev, "virtio-blk", virtio_blk_id++, 2,
+ s->qdev = qdev;
+ register_savevm(qdev, "virtio-blk", virtio_blk_id++, 2,
virtio_blk_save, virtio_blk_load, s);
bdrv_set_dev_ops(s->bs, &virtio_block_ops, s);
bdrv_set_buffer_alignment(s->bs, s->conf->logical_block_size);
bdrv_iostatus_enable(s->bs);
- add_boot_device_path(s->conf->bootindex, dev, "/disk@0,0");
- return &s->vdev;
-}
-
-VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
-{
- VirtIOBlock *s = NULL;
- return virtio_blk_common_init(dev, blk, &s);
-}
-
-void virtio_blk_exit(VirtIODevice *vdev)
-{
- VirtIOBlock *s = to_virtio_blk(vdev);
-
-#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
- virtio_blk_data_plane_destroy(s->dataplane);
- s->dataplane = NULL;
-#endif
- qemu_del_vm_change_state_handler(s->change);
- unregister_savevm(s->qdev, "virtio-blk", s);
- blockdev_mark_auto_del(s->bs);
- virtio_cleanup(vdev);
-}
-
-
-static int virtio_blk_device_init(VirtIODevice *vdev)
-{
- DeviceState *qdev = DEVICE(vdev);
- VirtIOBlock *s = VIRTIO_BLK(vdev);
- VirtIOBlkConf *blk = &(s->blk);
- if (virtio_blk_common_init(qdev, blk, &s) == NULL) {
- return -1;
- }
+ add_boot_device_path(s->conf->bootindex, qdev, "/disk@0,0");
return 0;
}
diff --git a/hw/virtio.h b/hw/virtio.h
index ca43fd7..fdbe931 100644
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -240,7 +240,6 @@ void virtio_bind_device(VirtIODevice *vdev, const VirtIOBindings *binding,
/* Base devices. */
typedef struct VirtIOBlkConf VirtIOBlkConf;
-VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk);
struct virtio_net_conf;
VirtIODevice *virtio_net_init(DeviceState *dev, NICConf *conf,
struct virtio_net_conf *net,
@@ -258,7 +257,6 @@ VirtIODevice *virtio_9p_init(DeviceState *dev, V9fsConf *conf);
void virtio_net_exit(VirtIODevice *vdev);
-void virtio_blk_exit(VirtIODevice *vdev);
void virtio_serial_exit(VirtIODevice *vdev);
void virtio_balloon_exit(VirtIODevice *vdev);
void virtio_scsi_exit(VirtIODevice *vdev);
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 09/10] virtio-blk: cleanup: QOM cast
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
` (7 preceding siblings ...)
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 08/10] virtio-blk: cleanup: init and exit functions fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 10/10] virtio-blk: cleanup: remove qdev field fred.konrad
9 siblings, 0 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: Kevin Wolf, peter.maydell, mst, mark.burton, Stefan Hajnoczi,
cornelia.huck, afaerber, fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
Use QOM casts inside virtio-blk.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/virtio-blk.c | 33 ++++++++++++++-------------------
hw/virtio-blk.h | 2 +-
2 files changed, 15 insertions(+), 20 deletions(-)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 9e7cd1f..663edcd 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -23,14 +23,6 @@
#endif
#include "hw/virtio-bus.h"
-/*
- * Moving to QOM later in this series.
- */
-static VirtIOBlock *to_virtio_blk(VirtIODevice *vdev)
-{
- return (VirtIOBlock *)vdev;
-}
-
typedef struct VirtIOBlockReq
{
VirtIOBlock *dev;
@@ -46,12 +38,13 @@ typedef struct VirtIOBlockReq
static void virtio_blk_req_complete(VirtIOBlockReq *req, int status)
{
VirtIOBlock *s = req->dev;
+ VirtIODevice *vdev = VIRTIO_DEVICE(s);
trace_virtio_blk_req_complete(req, status);
stb_p(&req->in->status, status);
virtqueue_push(s->vq, &req->elem, req->qiov.size + sizeof(*req->in));
- virtio_notify(&s->vdev, s->vq);
+ virtio_notify(vdev, s->vq);
}
static int virtio_blk_handle_rw_error(VirtIOBlockReq *req, int error,
@@ -396,7 +389,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
static void virtio_blk_handle_output(VirtIODevice *vdev, VirtQueue *vq)
{
- VirtIOBlock *s = to_virtio_blk(vdev);
+ VirtIOBlock *s = VIRTIO_BLK(vdev);
VirtIOBlockReq *req;
MultiReqBuffer mrb = {
.num_writes = 0,
@@ -464,7 +457,7 @@ static void virtio_blk_dma_restart_cb(void *opaque, int running,
static void virtio_blk_reset(VirtIODevice *vdev)
{
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
- VirtIOBlock *s = to_virtio_blk(vdev);
+ VirtIOBlock *s = VIRTIO_BLK(vdev);
if (s->dataplane) {
virtio_blk_data_plane_stop(s->dataplane);
@@ -482,7 +475,7 @@ static void virtio_blk_reset(VirtIODevice *vdev)
*/
static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
{
- VirtIOBlock *s = to_virtio_blk(vdev);
+ VirtIOBlock *s = VIRTIO_BLK(vdev);
struct virtio_blk_config blkcfg;
uint64_t capacity;
int blk_size = s->conf->logical_block_size;
@@ -521,7 +514,7 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config)
static void virtio_blk_set_config(VirtIODevice *vdev, const uint8_t *config)
{
- VirtIOBlock *s = to_virtio_blk(vdev);
+ VirtIOBlock *s = VIRTIO_BLK(vdev);
struct virtio_blk_config blkcfg;
memcpy(&blkcfg, config, sizeof(blkcfg));
@@ -530,7 +523,7 @@ static void virtio_blk_set_config(VirtIODevice *vdev, const uint8_t *config)
static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
{
- VirtIOBlock *s = to_virtio_blk(vdev);
+ VirtIOBlock *s = VIRTIO_BLK(vdev);
features |= (1 << VIRTIO_BLK_F_SEG_MAX);
features |= (1 << VIRTIO_BLK_F_GEOMETRY);
@@ -552,7 +545,7 @@ static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
static void virtio_blk_set_status(VirtIODevice *vdev, uint8_t status)
{
- VirtIOBlock *s = to_virtio_blk(vdev);
+ VirtIOBlock *s = VIRTIO_BLK(vdev);
uint32_t features;
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
@@ -573,9 +566,10 @@ static void virtio_blk_set_status(VirtIODevice *vdev, uint8_t status)
static void virtio_blk_save(QEMUFile *f, void *opaque)
{
VirtIOBlock *s = opaque;
+ VirtIODevice *vdev = VIRTIO_DEVICE(s);
VirtIOBlockReq *req = s->rq;
- virtio_save(&s->vdev, f);
+ virtio_save(vdev, f);
while (req) {
qemu_put_sbyte(f, 1);
@@ -588,12 +582,13 @@ static void virtio_blk_save(QEMUFile *f, void *opaque)
static int virtio_blk_load(QEMUFile *f, void *opaque, int version_id)
{
VirtIOBlock *s = opaque;
+ VirtIODevice *vdev = VIRTIO_DEVICE(s);
int ret;
if (version_id != 2)
return -EINVAL;
- ret = virtio_load(&s->vdev, f);
+ ret = virtio_load(vdev, f);
if (ret) {
return ret;
}
@@ -615,9 +610,9 @@ static int virtio_blk_load(QEMUFile *f, void *opaque, int version_id)
static void virtio_blk_resize(void *opaque)
{
- VirtIOBlock *s = opaque;
+ VirtIODevice *vdev = VIRTIO_DEVICE(opaque);
- virtio_notify_config(&s->vdev);
+ virtio_notify_config(vdev);
}
static const BlockDevOps virtio_block_ops = {
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index a040c01..51ac010 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -116,7 +116,7 @@ struct VirtIOBlkConf
};
typedef struct VirtIOBlock {
- VirtIODevice vdev;
+ VirtIODevice parent_obj;
BlockDriverState *bs;
VirtQueue *vq;
void *rq;
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* [Qemu-devel] [PATCH v9 10/10] virtio-blk: cleanup: remove qdev field.
2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
` (8 preceding siblings ...)
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 09/10] virtio-blk: cleanup: QOM cast fred.konrad
@ 2013-03-15 18:48 ` fred.konrad
9 siblings, 0 replies; 15+ messages in thread
From: fred.konrad @ 2013-03-15 18:48 UTC (permalink / raw)
To: qemu-devel, aliguori
Cc: Kevin Wolf, peter.maydell, mst, mark.burton, Stefan Hajnoczi,
cornelia.huck, afaerber, fred.konrad
From: KONRAD Frederic <fred.konrad@greensocs.com>
The qdev field is no longer needed, just drop it.
Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
---
hw/virtio-blk.c | 3 +--
hw/virtio-blk.h | 1 -
2 files changed, 1 insertion(+), 3 deletions(-)
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
index 663edcd..e6f8875 100644
--- a/hw/virtio-blk.c
+++ b/hw/virtio-blk.c
@@ -669,7 +669,6 @@ static int virtio_blk_device_init(VirtIODevice *vdev)
#endif
s->change = qemu_add_vm_change_state_handler(virtio_blk_dma_restart_cb, s);
- s->qdev = qdev;
register_savevm(qdev, "virtio-blk", virtio_blk_id++, 2,
virtio_blk_save, virtio_blk_load, s);
bdrv_set_dev_ops(s->bs, &virtio_block_ops, s);
@@ -690,7 +689,7 @@ static int virtio_blk_device_exit(DeviceState *dev)
s->dataplane = NULL;
#endif
qemu_del_vm_change_state_handler(s->change);
- unregister_savevm(s->qdev, "virtio-blk", s);
+ unregister_savevm(dev, "virtio-blk", s);
blockdev_mark_auto_del(s->bs);
virtio_common_cleanup(vdev);
return 0;
diff --git a/hw/virtio-blk.h b/hw/virtio-blk.h
index 51ac010..8c6c78b 100644
--- a/hw/virtio-blk.h
+++ b/hw/virtio-blk.h
@@ -124,7 +124,6 @@ typedef struct VirtIOBlock {
BlockConf *conf;
VirtIOBlkConf blk;
unsigned short sector_mask;
- DeviceState *qdev;
VMChangeStateEntry *change;
#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
VirtIOBlockDataPlane *dataplane;
--
1.7.11.7
^ permalink raw reply related [flat|nested] 15+ messages in thread
* Re: [Qemu-devel] [PATCH v9 03/10] virtio-blk: don't use pointer for configuration.
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 03/10] virtio-blk: don't use pointer for configuration fred.konrad
@ 2013-03-18 8:59 ` Kevin Wolf
2013-03-19 13:38 ` KONRAD Frédéric
0 siblings, 1 reply; 15+ messages in thread
From: Kevin Wolf @ 2013-03-18 8:59 UTC (permalink / raw)
To: fred.konrad
Cc: peter.maydell, aliguori, mst, mark.burton, qemu-devel,
Stefan Hajnoczi, cornelia.huck, afaerber
Am 15.03.2013 um 19:48 hat fred.konrad@greensocs.com geschrieben:
> From: KONRAD Frederic <fred.konrad@greensocs.com>
>
> The configuration field must not be a pointer as it will be used for virtio-blk
> properties. So *blk is replaced by blk in VirtIOBlock structure.
>
> Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> ---
> hw/virtio-blk.c | 8 ++++----
> hw/virtio-blk.h | 2 +-
> 2 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
> index 6714b01..908c316 100644
> --- a/hw/virtio-blk.c
> +++ b/hw/virtio-blk.c
> @@ -151,7 +151,7 @@ static void virtio_blk_handle_scsi(VirtIOBlockReq *req)
> */
> req->scsi = (void *)req->elem.in_sg[req->elem.in_num - 2].iov_base;
>
> - if (!req->dev->blk->scsi) {
> + if (!req->dev->blk.scsi) {
> status = VIRTIO_BLK_S_UNSUPP;
> goto fail;
> }
> @@ -371,7 +371,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
> * terminated by '\0' only when shorter than buffer.
> */
> strncpy(req->elem.in_sg[0].iov_base,
> - s->blk->serial ? s->blk->serial : "",
> + s->blk.serial ? s->blk.serial : "",
> MIN(req->elem.in_sg[0].iov_len, VIRTIO_BLK_ID_BYTES));
> virtio_blk_req_complete(req, VIRTIO_BLK_S_OK);
> g_free(req);
> @@ -534,7 +534,7 @@ static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
> features |= (1 << VIRTIO_BLK_F_BLK_SIZE);
> features |= (1 << VIRTIO_BLK_F_SCSI);
>
> - if (s->blk->config_wce) {
> + if (s->blk.config_wce) {
> features |= (1 << VIRTIO_BLK_F_CONFIG_WCE);
> }
> if (bdrv_enable_write_cache(s->bs))
> @@ -650,7 +650,7 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
> s->vdev.reset = virtio_blk_reset;
> s->bs = blk->conf.bs;
> s->conf = &blk->conf;
> - s->blk = blk;
> + memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
Why not simply s->blk = *blk?
The reason why copying this works is that blk is read-only after
initialisation. We also get an additional reference to blk->serial, but
we know that it can only go away after this device has been destroyed
(the same assumption was necessary for the s->blk pointer in the old
code).
Is my understanding of this correct?
Kevin
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [Qemu-devel] [PATCH v9 05/10] virtio-blk-pci: switch to new API.
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 05/10] virtio-blk-pci: switch to new API fred.konrad
@ 2013-03-18 13:01 ` Anthony Liguori
0 siblings, 0 replies; 15+ messages in thread
From: Anthony Liguori @ 2013-03-18 13:01 UTC (permalink / raw)
To: fred.konrad, qemu-devel
Cc: peter.maydell, mst, mark.burton, cornelia.huck, afaerber
fred.konrad@greensocs.com writes:
> From: KONRAD Frederic <fred.konrad@greensocs.com>
>
> Here the virtio-blk-pci is modified for the new API. The device
> virtio-blk-pci extends virtio-pci. It creates and connects a virtio-blk
> during the init. The properties are not changed.
>
> Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
According to bisect, this breaks hot unplug:
Using RANDOM seed 35921
Testing block
Formatting '.tmp-15607/disk.img', fmt=qcow2 size=10737418240 encryption=off cluster_size=65536 lazy_refcounts=off
/home/aliguori/build/qemu/x86_64-softmmu/qemu-system-x86_64 -kernel /usr/local/share/qemu-jeos/kernel-x86_64-pc -initrd .tmp-15607/initramfs-15607.img.gz -device isa-debug-exit -append console=ttyS0 seed=35921 -nographic -enable-kvm -device virtio-balloon-pci,id=balloon0 -pidfile .tmp-15607/pidfile-15607.pid -qmp unix:.tmp-15607/qmpsock-15607.sock,server,nowait
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 3.4.0 (root@ccnode4) (gcc version 4.6.4 20120830 (prerelease) (GCC) ) #2 SMP Mon Dec 3 19:40:41 CST 2012
[ 0.000000] Command line: console=ttyS0 seed=35921
[ 0.000000] BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
[ 0.000000] BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
[ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
[ 0.000000] BIOS-e820: 0000000000100000 - 0000000007ffe000 (usable)
[ 0.000000] BIOS-e820: 0000000007ffe000 - 0000000008000000 (reserved)
[ 0.000000] BIOS-e820: 00000000feffc000 - 00000000ff000000 (reserved)
[ 0.000000] BIOS-e820: 00000000fffc0000 - 0000000100000000 (reserved)
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] DMI 2.4 present.
[ 0.000000] No AGP bridge found
[ 0.000000] last_pfn = 0x7ffe max_arch_pfn = 0x400000000
[ 0.000000] PAT not supported by CPU.
[ 0.000000] found SMP MP-table at [ffff8800000fdaf0] fdaf0
[ 0.000000] init_memory_mapping: 0000000000000000-0000000007ffe000
[ 0.000000] RAMDISK: 07f58000 - 07ff0000
[ 0.000000] ACPI: RSDP 00000000000fd990 00014 (v00 BOCHS )
[ 0.000000] ACPI: RSDT 0000000007ffe4b0 00034 (v01 BOCHS BXPCRSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: FACP 0000000007ffff80 00074 (v01 BOCHS BXPCFACP 00000001 BXPC 00000001)
[ 0.000000] ACPI: DSDT 0000000007ffe4f0 011A9 (v01 BXPC BXDSDT 00000001 INTL 20100528)
[ 0.000000] ACPI: FACS 0000000007ffff40 00040
[ 0.000000] ACPI: SSDT 0000000007fff800 00735 (v01 BOCHS BXPCSSDT 00000001 BXPC 00000001)
[ 0.000000] ACPI: APIC 0000000007fff6e0 00078 (v01 BOCHS BXPCAPIC 00000001 BXPC 00000001)
[ 0.000000] ACPI: HPET 0000000007fff6a0 00038 (v01 BOCHS BXPCHPET 00000001 BXPC 00000001)
[ 0.000000] No NUMA configuration found
[ 0.000000] Faking a node at 0000000000000000-0000000007ffe000
[ 0.000000] Initmem setup node 0 0000000000000000-0000000007ffe000
[ 0.000000] NODE_DATA [0000000007ff7000 - 0000000007ffafff]
[ 0.000000] Zone PFN ranges:
[ 0.000000] DMA 0x00000010 -> 0x00001000
[ 0.000000] DMA32 0x00001000 -> 0x00100000
[ 0.000000] Normal empty
[ 0.000000] Movable zone start PFN for each node
[ 0.000000] Early memory PFN ranges
[ 0.000000] 0: 0x00000010 -> 0x0000009f
[ 0.000000] 0: 0x00000100 -> 0x00007ffe
[ 0.000000] ACPI: PM-Timer IO Port: 0xb008
[ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
[ 0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[ 0.000000] ACPI: IOAPIC (id[0x00] address[0xfec00000] gsi_base[0])
[ 0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[ 0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[ 0.000000] Using ACPI (MADT) for SMP configuration information
[ 0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[ 0.000000] SMP: Allowing 1 CPUs, 0 hotplug CPUs
[ 0.000000] PM: Registered nosave memory: 000000000009f000 - 00000000000a0000
[ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 00000000000f0000
[ 0.000000] PM: Registered nosave memory: 00000000000f0000 - 0000000000100000
[ 0.000000] Allocating PCI resources starting at 8000000 (gap: 8000000:f6ffc000)
[ 0.000000] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:1 nr_node_ids:1
[ 0.000000] PERCPU: Embedded 26 pages/cpu @ffff880007c00000 s77056 r8192 d21248 u2097152
[ 0.000000] Built 1 zonelists in Node order, mobility grouping on. Total pages: 32136
[ 0.000000] Policy zone: DMA32
[ 0.000000] Kernel command line: console=ttyS0 seed=35921
[ 0.000000] PID hash table entries: 512 (order: 0, 4096 bytes)
[ 0.000000] Checking aperture...
[ 0.000000] No AGP bridge found
[ 0.000000] Memory: 113188k/131064k available (7532k kernel code, 452k absent, 17424k reserved, 5454k data, 584k init)
[ 0.000000] SLUB: Genslabs=15, HWalign=64, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] NR_IRQS:4352 nr_irqs:256 16
[ 0.000000] Console: colour VGA+ 80x25
[ 0.000000] console [ttyS0] enabled
[ 0.000000] Fast TSC calibration using PIT
[ 0.000000] Detected 2933.452 MHz processor.
[ 0.003001] Calibrating delay loop (skipped), value calculated using timer frequency.. 5866.90 BogoMIPS (lpj=2933452)
[ 0.004339] pid_max: default: 32768 minimum: 301
[ 0.005016] Security Framework initialized
[ 0.006006] SELinux: Initializing.
[ 0.006476] Dentry cache hash table entries: 16384 (order: 5, 131072 bytes)
[ 0.007033] Inode-cache hash table entries: 8192 (order: 4, 65536 bytes)
[ 0.008015] Mount-cache hash table entries: 256
[ 0.009177] Initializing cgroup subsys cpuacct
[ 0.009720] Initializing cgroup subsys freezer
[ 0.010054] mce: CPU supports 10 MCE banks
[ 0.011219] SMP alternatives: switching to UP code
[ 0.020490] Freeing SMP alternatives: 24k freed
[ 0.021013] ACPI: Core revision 20120320
[ 0.023189] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[ 0.033904] CPU0: Intel QEMU Virtual CPU version 1.4.50 stepping 03
[ 0.034997] Performance Events: unsupported p6 CPU model 2 no PMU driver, software events only.
[ 0.035064] Brought up 1 CPUs
[ 0.035421] Total of 1 processors activated (5866.90 BogoMIPS).
[ 0.036391] kworker/u:0 used greatest stack depth: 6368 bytes left
[ 0.037067] RTC time: 21:22:00, date: 03/18/13
[ 0.037605] NET: Registered protocol family 16
[ 0.038264] ACPI: bus type pci registered
[ 0.039070] kworker/u:0 used greatest stack depth: 6304 bytes left
[ 0.039843] PCI: Using configuration type 1 for base access
[ 0.040253] kworker/u:0 used greatest stack depth: 5968 bytes left
[ 0.042503] kworker/u:0 used greatest stack depth: 5536 bytes left
[ 0.047520] bio: create slab <bio-0> at 0
[ 0.048158] ACPI: Added _OSI(Module Device)
[ 0.048691] ACPI: Added _OSI(Processor Device)
[ 0.049001] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.049554] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.051771] ACPI: Interpreter enabled
[ 0.051999] ACPI: (supports S0 S3 S4 S5)
[ 0.052538] ACPI: Using IOAPIC for interrupt routing
[ 0.056116] ACPI: No dock devices found.
[ 0.056583] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
[ 0.057065] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff])
[ 0.058081] pci_root PNP0A03:00: host bridge window [io 0x0000-0x0cf7]
[ 0.059011] pci_root PNP0A03:00: host bridge window [io 0x0d00-0xffff]
[ 0.060001] pci_root PNP0A03:00: host bridge window [mem 0x000a0000-0x000bffff]
[ 0.060997] pci_root PNP0A03:00: host bridge window [mem 0x80000000-0xfebfffff]
[ 0.061881] PCI host bridge to bus 0000:00
[ 0.062006] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7]
[ 0.062996] pci_bus 0000:00: root bus resource [io 0x0d00-0xffff]
[ 0.063758] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff]
[ 0.063996] pci_bus 0000:00: root bus resource [mem 0x80000000-0xfebfffff]
[ 0.070443] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI
[ 0.071009] pci 0000:00:01.3: quirk: [io 0xb100-0xb10f] claimed by PIIX4 SMB
[ 0.091473] pci0000:00: Unable to request _OSC control (_OSC support mask: 0x1e)
[ 0.093828] ACPI: PCI Interrupt Link [LNKA] (IRQs 5 *10 11)
[ 0.094263] ACPI: PCI Interrupt Link [LNKB] (IRQs 5 *10 11)
[ 0.095296] ACPI: PCI Interrupt Link [LNKC] (IRQs 5 10 *11)
[ 0.096296] ACPI: PCI Interrupt Link [LNKD] (IRQs 5 10 *11)
[ 0.097101] ACPI: PCI Interrupt Link [LNKS] (IRQs *9)
[ 0.097847] vgaarb: device added: PCI:0000:00:02.0,decodes=io+mem,owns=io+mem,locks=none
[ 0.098001] vgaarb: loaded
[ 0.098992] vgaarb: bridge control possible 0000:00:02.0
[ 0.099746] SCSI subsystem initialized
[ 0.100169] usbcore: registered new interface driver usbfs
[ 0.101027] usbcore: registered new interface driver hub
[ 0.101686] usbcore: registered new device driver usb
[ 0.102143] Advanced Linux Sound Architecture Driver Version 1.0.25.
[ 0.102997] PCI: Using ACPI for IRQ routing
[ 0.104287] cfg80211: Calling CRDA to update world regulatory domain
[ 0.105085] NetLabel: Initializing
[ 0.105502] NetLabel: domain hash size = 128
[ 0.106000] NetLabel: protocols = UNLABELED CIPSOv4
[ 0.106633] NetLabel: unlabeled traffic allowed by default
[ 0.107074] HPET: 3 timers in total, 0 timers will be used for per-cpu timer
[ 0.108011] hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0
[ 0.108650] hpet0: 3 comparators, 64-bit 100.000000 MHz counter
[ 0.114004] Switching to clocksource hpet
[ 0.115611] pnp: PnP ACPI init
[ 0.115979] ACPI: bus type pnp registered
[ 0.117343] pnp: PnP ACPI: found 8 devices
[ 0.117869] ACPI: ACPI bus type pnp unregistered
[ 0.126132] NET: Registered protocol family 2
[ 0.126658] IP route cache hash table entries: 1024 (order: 1, 8192 bytes)
[ 0.127536] TCP established hash table entries: 4096 (order: 4, 65536 bytes)
[ 0.128434] TCP bind hash table entries: 4096 (order: 4, 65536 bytes)
[ 0.129277] TCP: Hash tables configured (established 4096 bind 4096)
[ 0.130046] TCP: reno registered
[ 0.130429] UDP hash table entries: 128 (order: 0, 4096 bytes)
[ 0.131142] UDP-Lite hash table entries: 128 (order: 0, 4096 bytes)
[ 0.131902] NET: Registered protocol family 1
[ 0.132495] RPC: Registered named UNIX socket transport module.
[ 0.133231] RPC: Registered udp transport module.
[ 0.133829] RPC: Registered tcp transport module.
[ 0.134406] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 0.135188] pci 0000:00:00.0: Limiting direct PCI/PCI transfers
[ 0.135884] pci 0000:00:01.0: PIIX3: Enabling Passive Release
[ 0.136596] pci 0000:00:01.0: Activating ISA DMA hang workarounds
[ 0.137472] Trying to unpack rootfs image as initramfs...
[ 0.146656] Freeing initrd memory: 608k freed
[ 0.147604] microcode: CPU0 sig=0x623, pf=0x0, revision=0x1
[ 0.148340] microcode: Microcode Update Driver: v2.00 <tigran@aivazian.fsnet.co.uk>, Peter Oruba
[ 0.149627] audit: initializing netlink socket (disabled)
[ 0.150356] type=2000 audit(1363641720.149:1): initialized
[ 0.168648] HugeTLB registered 2 MB page size, pre-allocated 0 pages
[ 0.172627] VFS: Disk quotas dquot_6.5.2
[ 0.173217] Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.174573] NFS: Registering the id_resolver key type
[ 0.175430] msgmni has been set to 222
[ 0.176302] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[ 0.177266] io scheduler noop registered
[ 0.177731] io scheduler deadline registered
[ 0.178355] io scheduler cfq registered (default)
[ 0.179118] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[ 0.179774] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[ 0.180626] acpiphp: Slot [3] registered
[ 0.181174] acpiphp: Slot [4] registered
[ 0.181681] acpiphp: Slot [5] registered
[ 0.182230] acpiphp: Slot [6] registered
[ 0.182782] acpiphp: Slot [7] registered
[ 0.183324] acpiphp: Slot [8] registered
[ 0.183834] acpiphp: Slot [9] registered
[ 0.184375] acpiphp: Slot [10] registered
[ 0.184888] acpiphp: Slot [11] registered
[ 0.185440] acpiphp: Slot [12] registered
[ 0.185966] acpiphp: Slot [13] registered
[ 0.186518] acpiphp: Slot [14] registered
[ 0.187074] acpiphp: Slot [15] registered
[ 0.187586] acpiphp: Slot [16] registered
[ 0.188186] acpiphp: Slot [17] registered
[ 0.188714] acpiphp: Slot [18] registered
[ 0.189271] acpiphp: Slot [19] registered
[ 0.189792] acpiphp: Slot [20] registered
[ 0.190346] acpiphp: Slot [21] registered
[ 0.190911] acpiphp: Slot [22] registered
[ 0.191462] acpiphp: Slot [23] registered
[ 0.192068] acpiphp: Slot [24] registered
[ 0.192584] acpiphp: Slot [25] registered
[ 0.193145] acpiphp: Slot [26] registered
[ 0.193663] acpiphp: Slot [27] registered
[ 0.194221] acpiphp: Slot [28] registered
[ 0.194744] acpiphp: Slot [29] registered
[ 0.195296] acpiphp: Slot [30] registered
[ 0.195814] acpiphp: Slot [31] registered
[ 0.196533] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input0
[ 0.197443] ACPI: Power Button [PWRF]
[ 0.199428] ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11
[ 0.200958] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
�[ 0.467562] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 0.491167] 00:06: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 0.492233] Non-volatile memory driver v1.3
[ 0.492697] Linux agpgart interface v0.103
[ 0.493403] [drm] Initialized drm 1.1.0 20060810
[ 0.493923] [drm:i915_init] *ERROR* drm/i915 can't work without intel_agp module!
[ 0.496435] brd: module loaded
[ 0.497691] loop: module loaded
[ 0.498225] DC390: clustering now enabled by default. If you get problems load
[ 0.499126] with "disable_clustering=1" and report to maintainers
[ 0.499906] megasas: 00.00.06.14-rc1 Fri. Jan. 6 17:00:00 PDT 2012
[ 0.501942] scsi0 : ata_piix
[ 0.502416] scsi1 : ata_piix
[ 0.502816] ata1: PATA max MWDMA2 cmd 0x1f0 ctl 0x3f6 bmdma 0xc060 irq 14
[ 0.503615] ata2: PATA max MWDMA2 cmd 0x170 ctl 0x376 bmdma 0xc068 irq 15
[ 0.505477] pcnet32: pcnet32.c:v1.35 21.Apr.2008 tsbogend@alpha.franken.de
[ 0.506355] e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI
[ 0.507122] e100: Copyright(c) 1999-2006 Intel Corporation
[ 0.507797] e1000: Intel(R) PRO/1000 Network Driver - version 7.3.21-k8-NAPI
[ 0.508605] e1000: Copyright (c) 1999-2006 Intel Corporation.
[ 0.509432] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 10
[ 0.801483] ata2.00: ATAPI: QEMU DVD-ROM, 1.4.50, max UDMA/100
[ 0.802553] ata2.00: configured for MWDMA2
[ 0.803460] scsi 1:0:0:0: CD-ROM QEMU QEMU DVD-ROM 1.4. PQ: 0 ANSI: 5
[ 0.805114] sr0: scsi3-mmc drive: 4x/4x cd/rw xa/form2 tray
[ 0.805738] cdrom: Uniform CD-ROM driver Revision: 3.20
[ 0.806800] sr 1:0:0:0: Attached scsi generic sg0 type 5
[ 0.830497] e1000 0000:00:03.0: eth0: (PCI:33MHz:32-bit) 52:54:00:12:34:56
[ 0.831385] e1000 0000:00:03.0: eth0: Intel(R) PRO/1000 Network Connection
[ 0.832223] sky2: driver version 1.30
[ 0.832914] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[ 0.833721] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 0.834490] uhci_hcd: USB Universal Host Controller Interface driver
[ 0.835305] usbcore: registered new interface driver usblp
[ 0.835957] Initializing USB Mass Storage driver...
[ 0.836575] usbcore: registered new interface driver usb-storage
[ 0.837281] USB Mass Storage support registered.
[ 0.837843] usbcore: registered new interface driver libusual
[ 0.838602] i8042: PNP: PS/2 Controller [PNP0303:KBD,PNP0f13:MOU] at 0x60,0x64 irq 1,12
[ 0.840195] serio: i8042 KBD port at 0x60,0x64 irq 1
[ 0.840756] serio: i8042 AUX port at 0x60,0x64 irq 12
[ 0.841521] mousedev: PS/2 mouse device common for all mice
[ 0.842527] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input1
[ 0.843606] rtc_cmos 00:01: RTC can wake from S4
[ 0.846490] rtc_cmos 00:01: rtc core: registered rtc_cmos as rtc0
[ 0.847332] rtc0: alarms up to one day, 114 bytes nvram, hpet irqs
[ 0.848305] device-mapper: ioctl: 4.22.0-ioctl (2011-10-19) initialised: dm-devel@redhat.com
[ 0.849359] cpuidle: using governor ladder
[ 0.849842] cpuidle: using governor menu
[ 0.850322] EFI Variables Facility v0.08 2004-May-17
[ 0.851670] usbcore: registered new interface driver usbhid
[ 0.852373] usbhid: USB HID core driver
[ 0.853283] Netfilter messages via NETLINK v0.30.
[ 0.853838] nf_conntrack version 0.5.0 (889 buckets, 3556 max)
[ 0.854632] ctnetlink v0.93: registering with nfnetlink.
[ 0.855350] ip_tables: (C) 2000-2006 Netfilter Core Team
[ 0.855969] TCP: cubic registered
[ 0.856387] Initializing XFRM netlink socket
[ 0.857072] NET: Registered protocol family 10
[ 0.857735] ip6_tables: (C) 2000-2006 Netfilter Core Team
[ 0.858397] IPv6 over IPv4 tunneling driver
[ 0.859079] NET: Registered protocol family 17
[ 0.859611] Registering the dns_resolver key type
[ 0.860322] registered taskstats version 1
[ 0.860899] Magic number: 5:385:399
[ 0.861368] console [netcon0] enabled
[ 0.861773] netconsole: network logging started
[ 0.862347] ALSA device list:
[ 0.862689] No soundcards found.
[ 0.864143] Freeing unused kernel memory: 584k freed
[ 0.864800] Write protecting the kernel read-only data: 12288k
[ 0.867044] Freeing unused kernel memory: 640k freed
[ 0.871753] Freeing unused kernel memory: 1724k freed
Setting guest RANDOM seed to 35921
*** Running tests ***
/tests/device-del.sh
Running test /tests/device-del.sh...
** waiting for hotplug **
** waiting for remove **
** waiting for guest to see device **
./qemu-test: line 99: 15638 Segmentation fault (core dumped) "$@"
Here's the backtrace:
Program terminated with signal 11, Segmentation fault.
#0 virtio_pci_stop_ioeventfd (proxy=0x0)
at /home/aliguori/git/qemu/hw/virtio-pci.c:243
243 if (!proxy->ioeventfd_started) {
Missing separate debuginfos, use: debuginfo-install bzip2-libs-1.0.6-7.fc18.x86_64 glib2-2.34.2-2.fc18.x86_64 glibc-2.16-28.fc18.x86_64 libaio-0.3.109-6.fc18.x86_64 libfdt-1.3.0-5.fc18.x86_64 libgcc-4.7.2-8.fc18.x86_64 pixman-0.26.2-5.fc18.x86_64 xen-libs-4.2.1-5.fc18.x86_64 xz-libs-5.1.2-2alpha.fc18.x86_64 zlib-1.2.7-9.fc18.x86_64
(gdb) bt
#0 virtio_pci_stop_ioeventfd (proxy=0x0)
at /home/aliguori/git/qemu/hw/virtio-pci.c:243
#1 0x00007fc00cb131fa in virtio_bus_destroy_device (bus=bus@entry=
0x7fc00e6e3bd8) at /home/aliguori/git/qemu/hw/virtio-bus.c:94
#2 0x00007fc00cb143c5 in virtio_pci_exit (pci_dev=0x7fc00e6e1410)
at /home/aliguori/git/qemu/hw/virtio-pci.c:1369
#3 0x00007fc00caca30a in pci_unregister_device (dev=<optimized out>)
at /home/aliguori/git/qemu/hw/pci/pci.c:889
#4 0x00007fc00cadd765 in device_unparent (obj=<optimized out>)
at /home/aliguori/git/qemu/hw/qdev.c:774
#5 0x00007fc00cb595cf in object_unparent (obj=0x7fc00e6e1410)
at /home/aliguori/git/qemu/qom/object.c:370
#6 0x00007fc00caddd2d in qdev_free (dev=<optimized out>)
at /home/aliguori/git/qemu/hw/qdev.c:271
#7 0x00007fc00ca70450 in acpi_piix_eject_slot (s=0x7fc00e705ba0,
slots=<optimized out>) at /home/aliguori/git/qemu/hw/acpi_piix4.c:306
#8 0x00007fc00cbe2af2 in access_with_adjusted_size (addr=addr@entry=8,
value=value@entry=0x7fc009e31c28, size=4, access_size_min=<optimized out>,
access_size_max=<optimized out>, access=access@entry=
0x7fc00cbe3110 <memory_region_write_accessor>, opaque=opaque@entry=
0x7fc00e706390) at /home/aliguori/git/qemu/memory.c:364
#9 0x00007fc00cbe4167 in memory_region_iorange_write (
iorange=<optimized out>, offset=8, width=4, data=32)
#10 0x00007fc00cbe0f1d in kvm_handle_io (count=1, size=4, direction=1,
data=<optimized out>, port=44552) at /home/aliguori/git/qemu/kvm-all.c:1430
#11 kvm_cpu_exec (env=env@entry=0x7fc00e670160)
at /home/aliguori/git/qemu/kvm-all.c:1579
#12 0x00007fc00cb89d21 in qemu_kvm_cpu_thread_fn (arg=0x7fc00e670160)
at /home/aliguori/git/qemu/cpus.c:759
#13 0x00007fc00aa41d15 in start_thread () from /lib64/libpthread.so.0
#14 0x00007fc00a77446d in clone () from /lib64/libc.so.6
Regards,
Anthony Liguori
> ---
> hw/virtio-pci.c | 121 ++++++++++++++++++++++++++------------------------------
> hw/virtio-pci.h | 15 ++++++-
> 2 files changed, 71 insertions(+), 65 deletions(-)
>
> diff --git a/hw/virtio-pci.c b/hw/virtio-pci.c
> index 2160cb8..0095a32 100644
> --- a/hw/virtio-pci.c
> +++ b/hw/virtio-pci.c
> @@ -924,26 +924,6 @@ void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev)
> proxy->host_features = vdev->get_features(vdev, proxy->host_features);
> }
>
> -static int virtio_blk_init_pci(PCIDevice *pci_dev)
> -{
> - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
> - VirtIODevice *vdev;
> -
> - if (proxy->class_code != PCI_CLASS_STORAGE_SCSI &&
> - proxy->class_code != PCI_CLASS_STORAGE_OTHER)
> - proxy->class_code = PCI_CLASS_STORAGE_SCSI;
> -
> - vdev = virtio_blk_init(&pci_dev->qdev, &proxy->blk);
> - if (!vdev) {
> - return -1;
> - }
> - vdev->nvectors = proxy->nvectors;
> - virtio_init_pci(proxy, vdev);
> - /* make the actual value visible */
> - proxy->nvectors = vdev->nvectors;
> - return 0;
> -}
> -
> static void virtio_exit_pci(PCIDevice *pci_dev)
> {
> VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
> @@ -952,15 +932,6 @@ static void virtio_exit_pci(PCIDevice *pci_dev)
> msix_uninit_exclusive_bar(pci_dev);
> }
>
> -static void virtio_blk_exit_pci(PCIDevice *pci_dev)
> -{
> - VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
> -
> - virtio_pci_stop_ioeventfd(proxy);
> - virtio_blk_exit(proxy->vdev);
> - virtio_exit_pci(pci_dev);
> -}
> -
> static int virtio_serial_init_pci(PCIDevice *pci_dev)
> {
> VirtIOPCIProxy *proxy = DO_UPCAST(VirtIOPCIProxy, pci_dev, pci_dev);
> @@ -1082,40 +1053,6 @@ static void virtio_rng_exit_pci(PCIDevice *pci_dev)
> virtio_exit_pci(pci_dev);
> }
>
> -static Property virtio_blk_properties[] = {
> - DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
> - DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
> -#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
> - DEFINE_PROP_BIT("x-data-plane", VirtIOPCIProxy, blk.data_plane, 0, false),
> -#endif
> - DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
> - DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
> - DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOPCIProxy, blk),
> - DEFINE_PROP_END_OF_LIST(),
> -};
> -
> -static void virtio_blk_class_init(ObjectClass *klass, void *data)
> -{
> - DeviceClass *dc = DEVICE_CLASS(klass);
> - PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
> -
> - k->init = virtio_blk_init_pci;
> - k->exit = virtio_blk_exit_pci;
> - k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
> - k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
> - k->revision = VIRTIO_PCI_ABI_VERSION;
> - k->class_id = PCI_CLASS_STORAGE_SCSI;
> - dc->reset = virtio_pci_reset;
> - dc->props = virtio_blk_properties;
> -}
> -
> -static const TypeInfo virtio_blk_info = {
> - .name = "virtio-blk-pci",
> - .parent = TYPE_PCI_DEVICE,
> - .instance_size = sizeof(VirtIOPCIProxy),
> - .class_init = virtio_blk_class_init,
> -};
> -
> static Property virtio_net_properties[] = {
> DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, false),
> DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 3),
> @@ -1470,6 +1407,62 @@ static const TypeInfo virtio_pci_info = {
> .abstract = true,
> };
>
> +/* virtio-blk-pci */
> +
> +static Property virtio_blk_pci_properties[] = {
> + DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
> + DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags,
> + VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
> + DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
> +#ifdef CONFIG_VIRTIO_BLK_DATA_PLANE
> + DEFINE_PROP_BIT("x-data-plane", VirtIOBlkPCI, blk.data_plane, 0, false),
> +#endif
> + DEFINE_VIRTIO_BLK_FEATURES(VirtIOPCIProxy, host_features),
> + DEFINE_VIRTIO_BLK_PROPERTIES(VirtIOBlkPCI, blk),
> + DEFINE_PROP_END_OF_LIST(),
> +};
> +
> +static int virtio_blk_pci_init(VirtIOPCIProxy *vpci_dev)
> +{
> + VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(vpci_dev);
> + DeviceState *vdev = DEVICE(&dev->vdev);
> + virtio_blk_set_conf(vdev, &(dev->blk));
> + qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
> + if (qdev_init(vdev) < 0) {
> + return -1;
> + }
> + return 0;
> +}
> +
> +static void virtio_blk_pci_class_init(ObjectClass *klass, void *data)
> +{
> + DeviceClass *dc = DEVICE_CLASS(klass);
> + VirtioPCIClass *k = VIRTIO_PCI_CLASS(klass);
> + PCIDeviceClass *pcidev_k = PCI_DEVICE_CLASS(klass);
> +
> + dc->props = virtio_blk_pci_properties;
> + k->init = virtio_blk_pci_init;
> + pcidev_k->vendor_id = PCI_VENDOR_ID_REDHAT_QUMRANET;
> + pcidev_k->device_id = PCI_DEVICE_ID_VIRTIO_BLOCK;
> + pcidev_k->revision = VIRTIO_PCI_ABI_VERSION;
> + pcidev_k->class_id = PCI_CLASS_STORAGE_SCSI;
> +}
> +
> +static void virtio_blk_pci_instance_init(Object *obj)
> +{
> + VirtIOBlkPCI *dev = VIRTIO_BLK_PCI(obj);
> + object_initialize(OBJECT(&dev->vdev), TYPE_VIRTIO_BLK);
> + object_property_add_child(obj, "virtio-backend", OBJECT(&dev->vdev), NULL);
> +}
> +
> +static const TypeInfo virtio_blk_pci_info = {
> + .name = TYPE_VIRTIO_BLK_PCI,
> + .parent = TYPE_VIRTIO_PCI,
> + .instance_size = sizeof(VirtIOBlkPCI),
> + .instance_init = virtio_blk_pci_instance_init,
> + .class_init = virtio_blk_pci_class_init,
> +};
> +
> /* virtio-pci-bus */
>
> void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev)
> @@ -1509,7 +1502,6 @@ static const TypeInfo virtio_pci_bus_info = {
>
> static void virtio_pci_register_types(void)
> {
> - type_register_static(&virtio_blk_info);
> type_register_static(&virtio_net_info);
> type_register_static(&virtio_serial_info);
> type_register_static(&virtio_balloon_info);
> @@ -1520,6 +1512,7 @@ static void virtio_pci_register_types(void)
> #ifdef CONFIG_VIRTFS
> type_register_static(&virtio_9p_info);
> #endif
> + type_register_static(&virtio_blk_pci_info);
> }
>
> type_init(virtio_pci_register_types)
> diff --git a/hw/virtio-pci.h b/hw/virtio-pci.h
> index 2ae96f8..a9dbfff 100644
> --- a/hw/virtio-pci.h
> +++ b/hw/virtio-pci.h
> @@ -25,6 +25,7 @@
> #include "hw/9pfs/virtio-9p-device.h"
>
> typedef struct VirtIOPCIProxy VirtIOPCIProxy;
> +typedef struct VirtIOBlkPCI VirtIOBlkPCI;
>
> /* virtio-pci-bus */
>
> @@ -73,7 +74,6 @@ struct VirtIOPCIProxy {
> uint32_t flags;
> uint32_t class_code;
> uint32_t nvectors;
> - VirtIOBlkConf blk;
> NICConf nic;
> uint32_t host_features;
> #ifdef CONFIG_VIRTFS
> @@ -90,6 +90,19 @@ struct VirtIOPCIProxy {
> VirtioBusState bus;
> };
>
> +/*
> + * virtio-blk-pci: This extends VirtioPCIProxy.
> + */
> +#define TYPE_VIRTIO_BLK_PCI "virtio-blk-pci"
> +#define VIRTIO_BLK_PCI(obj) \
> + OBJECT_CHECK(VirtIOBlkPCI, (obj), TYPE_VIRTIO_BLK_PCI)
> +
> +struct VirtIOBlkPCI {
> + VirtIOPCIProxy parent_obj;
> + VirtIOBlock vdev;
> + VirtIOBlkConf blk;
> +};
> +
> void virtio_init_pci(VirtIOPCIProxy *proxy, VirtIODevice *vdev);
> void virtio_pci_bus_new(VirtioBusState *bus, VirtIOPCIProxy *dev);
>
> --
> 1.7.11.7
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [Qemu-devel] [PATCH v9 03/10] virtio-blk: don't use pointer for configuration.
2013-03-18 8:59 ` Kevin Wolf
@ 2013-03-19 13:38 ` KONRAD Frédéric
2013-03-19 13:55 ` Kevin Wolf
0 siblings, 1 reply; 15+ messages in thread
From: KONRAD Frédéric @ 2013-03-19 13:38 UTC (permalink / raw)
To: Kevin Wolf
Cc: peter.maydell, aliguori, mst, mark.burton, qemu-devel,
Stefan Hajnoczi, cornelia.huck, afaerber
On 18/03/2013 09:59, Kevin Wolf wrote:
> Am 15.03.2013 um 19:48 hat fred.konrad@greensocs.com geschrieben:
>> From: KONRAD Frederic <fred.konrad@greensocs.com>
>>
>> The configuration field must not be a pointer as it will be used for virtio-blk
>> properties. So *blk is replaced by blk in VirtIOBlock structure.
>>
>> Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
>> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
>> ---
>> hw/virtio-blk.c | 8 ++++----
>> hw/virtio-blk.h | 2 +-
>> 2 files changed, 5 insertions(+), 5 deletions(-)
>>
>> diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
>> index 6714b01..908c316 100644
>> --- a/hw/virtio-blk.c
>> +++ b/hw/virtio-blk.c
>> @@ -151,7 +151,7 @@ static void virtio_blk_handle_scsi(VirtIOBlockReq *req)
>> */
>> req->scsi = (void *)req->elem.in_sg[req->elem.in_num - 2].iov_base;
>>
>> - if (!req->dev->blk->scsi) {
>> + if (!req->dev->blk.scsi) {
>> status = VIRTIO_BLK_S_UNSUPP;
>> goto fail;
>> }
>> @@ -371,7 +371,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
>> * terminated by '\0' only when shorter than buffer.
>> */
>> strncpy(req->elem.in_sg[0].iov_base,
>> - s->blk->serial ? s->blk->serial : "",
>> + s->blk.serial ? s->blk.serial : "",
>> MIN(req->elem.in_sg[0].iov_len, VIRTIO_BLK_ID_BYTES));
>> virtio_blk_req_complete(req, VIRTIO_BLK_S_OK);
>> g_free(req);
>> @@ -534,7 +534,7 @@ static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
>> features |= (1 << VIRTIO_BLK_F_BLK_SIZE);
>> features |= (1 << VIRTIO_BLK_F_SCSI);
>>
>> - if (s->blk->config_wce) {
>> + if (s->blk.config_wce) {
>> features |= (1 << VIRTIO_BLK_F_CONFIG_WCE);
>> }
>> if (bdrv_enable_write_cache(s->bs))
>> @@ -650,7 +650,7 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
>> s->vdev.reset = virtio_blk_reset;
>> s->bs = blk->conf.bs;
>> s->conf = &blk->conf;
>> - s->blk = blk;
>> + memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
> Why not simply s->blk = *blk?
>
> The reason why copying this works is that blk is read-only after
> initialisation. We also get an additional reference to blk->serial, but
> we know that it can only go away after this device has been destroyed
> (the same assumption was necessary for the s->blk pointer in the old
> code).
You mean this copying (s->blk = *blk) ?
>
> Is my understanding of this correct?
>
> Kevin
^ permalink raw reply [flat|nested] 15+ messages in thread
* Re: [Qemu-devel] [PATCH v9 03/10] virtio-blk: don't use pointer for configuration.
2013-03-19 13:38 ` KONRAD Frédéric
@ 2013-03-19 13:55 ` Kevin Wolf
0 siblings, 0 replies; 15+ messages in thread
From: Kevin Wolf @ 2013-03-19 13:55 UTC (permalink / raw)
To: KONRAD Frédéric
Cc: peter.maydell, aliguori, mst, mark.burton, qemu-devel,
Stefan Hajnoczi, cornelia.huck, afaerber
Am 19.03.2013 um 14:38 hat KONRAD Frédéric geschrieben:
> On 18/03/2013 09:59, Kevin Wolf wrote:
> >Am 15.03.2013 um 19:48 hat fred.konrad@greensocs.com geschrieben:
> >>From: KONRAD Frederic <fred.konrad@greensocs.com>
> >>
> >>The configuration field must not be a pointer as it will be used for virtio-blk
> >>properties. So *blk is replaced by blk in VirtIOBlock structure.
> >>
> >>Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
> >>Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
> >>---
> >> hw/virtio-blk.c | 8 ++++----
> >> hw/virtio-blk.h | 2 +-
> >> 2 files changed, 5 insertions(+), 5 deletions(-)
> >>
> >>diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c
> >>index 6714b01..908c316 100644
> >>--- a/hw/virtio-blk.c
> >>+++ b/hw/virtio-blk.c
> >>@@ -151,7 +151,7 @@ static void virtio_blk_handle_scsi(VirtIOBlockReq *req)
> >> */
> >> req->scsi = (void *)req->elem.in_sg[req->elem.in_num - 2].iov_base;
> >>- if (!req->dev->blk->scsi) {
> >>+ if (!req->dev->blk.scsi) {
> >> status = VIRTIO_BLK_S_UNSUPP;
> >> goto fail;
> >> }
> >>@@ -371,7 +371,7 @@ static void virtio_blk_handle_request(VirtIOBlockReq *req,
> >> * terminated by '\0' only when shorter than buffer.
> >> */
> >> strncpy(req->elem.in_sg[0].iov_base,
> >>- s->blk->serial ? s->blk->serial : "",
> >>+ s->blk.serial ? s->blk.serial : "",
> >> MIN(req->elem.in_sg[0].iov_len, VIRTIO_BLK_ID_BYTES));
> >> virtio_blk_req_complete(req, VIRTIO_BLK_S_OK);
> >> g_free(req);
> >>@@ -534,7 +534,7 @@ static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features)
> >> features |= (1 << VIRTIO_BLK_F_BLK_SIZE);
> >> features |= (1 << VIRTIO_BLK_F_SCSI);
> >>- if (s->blk->config_wce) {
> >>+ if (s->blk.config_wce) {
> >> features |= (1 << VIRTIO_BLK_F_CONFIG_WCE);
> >> }
> >> if (bdrv_enable_write_cache(s->bs))
> >>@@ -650,7 +650,7 @@ VirtIODevice *virtio_blk_init(DeviceState *dev, VirtIOBlkConf *blk)
> >> s->vdev.reset = virtio_blk_reset;
> >> s->bs = blk->conf.bs;
> >> s->conf = &blk->conf;
> >>- s->blk = blk;
> >>+ memcpy(&(s->blk), blk, sizeof(struct VirtIOBlkConf));
> >Why not simply s->blk = *blk?
> >
> >The reason why copying this works is that blk is read-only after
> >initialisation. We also get an additional reference to blk->serial, but
> >we know that it can only go away after this device has been destroyed
> >(the same assumption was necessary for the s->blk pointer in the old
> >code).
>
> You mean this copying (s->blk = *blk) ?
Or the memcpy() in your code, which should be equivalent.
Kevin
> >Is my understanding of this correct?
> >
> >Kevin
>
^ permalink raw reply [flat|nested] 15+ messages in thread
end of thread, other threads:[~2013-03-19 13:56 UTC | newest]
Thread overview: 15+ messages (download: mbox.gz follow: Atom feed
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2013-03-15 18:48 [Qemu-devel] [PATCH v9 00/10] virtio-blk refactoring fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 01/10] virtio: make virtio device's structures public fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 02/10] virtio-x-bus: fix allow_hotplug assertion fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 03/10] virtio-blk: don't use pointer for configuration fred.konrad
2013-03-18 8:59 ` Kevin Wolf
2013-03-19 13:38 ` KONRAD Frédéric
2013-03-19 13:55 ` Kevin Wolf
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 04/10] virtio-blk: add the virtio-blk device fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 05/10] virtio-blk-pci: switch to new API fred.konrad
2013-03-18 13:01 ` Anthony Liguori
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 06/10] virtio-blk-s390: switch to the " fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 07/10] virtio-blk-ccw switch to " fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 08/10] virtio-blk: cleanup: init and exit functions fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 09/10] virtio-blk: cleanup: QOM cast fred.konrad
2013-03-15 18:48 ` [Qemu-devel] [PATCH v9 10/10] virtio-blk: cleanup: remove qdev field fred.konrad
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