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pc, pci, virtio: features, fixes, cleanups 

A bunch of fixes, cleanus and new features all over the place.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc, pci, virtio: features, fixes, cleanups

A bunch of fixes, cleanus and new features all over the place.

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

# gpg: Signature made Thu 18 Jan 2018 20:41:03 GMT
# gpg:                using RSA key 0x281F0DB8D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>"
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream: (29 commits)
  vhost: remove assertion to prevent crash
  vhost-user: fix misaligned access to payload
  vhost-user: factor out msg head and payload
  tests: acpi: add comments to fetch_rsdt_referenced_tables/data->tables usage
  tests: acpi: rename test_acpi_tables()/test_dst_table() to reflect its usage
  tests: acpi: init table descriptor in test_dst_table()
  tests: acpi: move tested tables array allocation outside of test_acpi_dsdt_table()
  x86_iommu: check if machine has PCI bus
  x86_iommu: Move machine check to x86_iommu_realize()
  vhost-user-test: use init_virtio_dev in multiqueue test
  vhost-user-test: make features mask an init_virtio_dev() argument
  vhost-user-test: setup virtqueues in all tests
  vhost-user-test: extract read-guest-mem test from main loop
  vhost-user-test: fix features mask
  hw/acpi-build: Make next_base easy to follow
  ACPI/unit-test: Add a testcase for RAM allocation in numa node
  hw/pci-bridge: fix QEMU crash because of pcie-root-port
  intel-iommu: Extend address width to 48 bits
  intel-iommu: Redefine macros to enable supporting 48 bit address width
  vhost-user: fix multiple queue specification
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2018-01-19 10:17:20 +00:00
parent b4d6ed1c5a f4bf56fb78
commit 3e5bdc6573
41 changed files with 1737 additions and 304 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
.gitignore vendored
View File

@ -54,6 +54,7 @@
/module_block.h
/scsi/qemu-pr-helper
/vhost-user-scsi
/vhost-user-blk
/fsdev/virtfs-proxy-helper
*.tmp
*.[1-9]

1
MAINTAINERS
View File

@ -852,6 +852,7 @@ X86 Machines
------------
PC
M: Michael S. Tsirkin <mst@redhat.com>
M: Marcel Apfelbaum <marcel@redhat.com>
S: Supported
F: include/hw/i386/
F: hw/i386/

3
Makefile
View File

@ -334,6 +334,7 @@ dummy := $(call unnest-vars,, \
ivshmem-server-obj-y \
libvhost-user-obj-y \
vhost-user-scsi-obj-y \
vhost-user-blk-obj-y \
qga-vss-dll-obj-y \
block-obj-y \
block-obj-m \
@ -565,6 +566,8 @@ ivshmem-server$(EXESUF): $(ivshmem-server-obj-y) $(COMMON_LDADDS)
endif
vhost-user-scsi$(EXESUF): $(vhost-user-scsi-obj-y) libvhost-user.a
$(call LINK, $^)
vhost-user-blk$(EXESUF): $(vhost-user-blk-obj-y) libvhost-user.a
$(call LINK, $^)
module_block.h: $(SRC_PATH)/scripts/modules/module_block.py config-host.mak
$(call quiet-command,$(PYTHON) $< $@ \

1
Makefile.objs
View File

@ -115,6 +115,7 @@ libvhost-user-obj-y = contrib/libvhost-user/
vhost-user-scsi.o-cflags := $(LIBISCSI_CFLAGS)
vhost-user-scsi.o-libs := $(LIBISCSI_LIBS)
vhost-user-scsi-obj-y = contrib/vhost-user-scsi/
vhost-user-blk-obj-y = contrib/vhost-user-blk/
######################################################################
trace-events-subdirs =

4
accel/kvm/kvm-all.c
View File

@ -812,6 +812,10 @@ static void kvm_mem_ioeventfd_del(MemoryListener *listener,
if (r < 0) {
abort();
}
if (e->cleanup) {
e->cleanup(e);
}
}
static void kvm_io_ioeventfd_add(MemoryListener *listener,

42
contrib/libvhost-user/libvhost-user.c
View File

@ -84,6 +84,8 @@ vu_request_to_string(unsigned int req)
REQ(VHOST_USER_SET_SLAVE_REQ_FD),
REQ(VHOST_USER_IOTLB_MSG),
REQ(VHOST_USER_SET_VRING_ENDIAN),
REQ(VHOST_USER_GET_CONFIG),
REQ(VHOST_USER_SET_CONFIG),
REQ(VHOST_USER_MAX),
};
#undef REQ
@ -797,6 +799,42 @@ vu_set_slave_req_fd(VuDev *dev, VhostUserMsg *vmsg)
return false;
}
static bool
vu_get_config(VuDev *dev, VhostUserMsg *vmsg)
{
int ret = -1;
if (dev->iface->get_config) {
ret = dev->iface->get_config(dev, vmsg->payload.config.region,
vmsg->payload.config.size);
}
if (ret) {
/* resize to zero to indicate an error to master */
vmsg->size = 0;
}
return true;
}
static bool
vu_set_config(VuDev *dev, VhostUserMsg *vmsg)
{
int ret = -1;
if (dev->iface->set_config) {
ret = dev->iface->set_config(dev, vmsg->payload.config.region,
vmsg->payload.config.offset,
vmsg->payload.config.size,
vmsg->payload.config.flags);
if (ret) {
vu_panic(dev, "Set virtio configuration space failed");
}
}
return false;
}
static bool
vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
{
@ -862,6 +900,10 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
return vu_set_vring_enable_exec(dev, vmsg);
case VHOST_USER_SET_SLAVE_REQ_FD:
return vu_set_slave_req_fd(dev, vmsg);
case VHOST_USER_GET_CONFIG:
return vu_get_config(dev, vmsg);
case VHOST_USER_SET_CONFIG:
return vu_set_config(dev, vmsg);
case VHOST_USER_NONE:
break;
default:

33
contrib/libvhost-user/libvhost-user.h
View File

@ -30,6 +30,16 @@
#define VHOST_MEMORY_MAX_NREGIONS 8
typedef enum VhostSetConfigType {
VHOST_SET_CONFIG_TYPE_MASTER = 0,
VHOST_SET_CONFIG_TYPE_MIGRATION = 1,
} VhostSetConfigType;
/*
* Maximum size of virtio device config space
*/
#define VHOST_USER_MAX_CONFIG_SIZE 256
enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_MQ = 0,
VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
@ -69,6 +79,8 @@ typedef enum VhostUserRequest {
VHOST_USER_SET_SLAVE_REQ_FD = 21,
VHOST_USER_IOTLB_MSG = 22,
VHOST_USER_SET_VRING_ENDIAN = 23,
VHOST_USER_GET_CONFIG = 24,
VHOST_USER_SET_CONFIG = 25,
VHOST_USER_MAX
} VhostUserRequest;
@ -90,6 +102,18 @@ typedef struct VhostUserLog {
uint64_t mmap_offset;
} VhostUserLog;
typedef struct VhostUserConfig {
uint32_t offset;
uint32_t size;
uint32_t flags;
uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
} VhostUserConfig;
static VhostUserConfig c __attribute__ ((unused));
#define VHOST_USER_CONFIG_HDR_SIZE (sizeof(c.offset) \
+ sizeof(c.size) \
+ sizeof(c.flags))
#if defined(_WIN32)
# define VU_PACKED __attribute__((gcc_struct, packed))
#else
@ -112,6 +136,7 @@ typedef struct VhostUserMsg {
struct vhost_vring_addr addr;
VhostUserMemory memory;
VhostUserLog log;
VhostUserConfig config;
} payload;
int fds[VHOST_MEMORY_MAX_NREGIONS];
@ -140,6 +165,10 @@ typedef int (*vu_process_msg_cb) (VuDev *dev, VhostUserMsg *vmsg,
int *do_reply);
typedef void (*vu_queue_set_started_cb) (VuDev *dev, int qidx, bool started);
typedef bool (*vu_queue_is_processed_in_order_cb) (VuDev *dev, int qidx);
typedef int (*vu_get_config_cb) (VuDev *dev, uint8_t *config, uint32_t len);
typedef int (*vu_set_config_cb) (VuDev *dev, const uint8_t *data,
uint32_t offset, uint32_t size,
uint32_t flags);
typedef struct VuDevIface {
/* called by VHOST_USER_GET_FEATURES to get the features bitmask */
@ -162,6 +191,10 @@ typedef struct VuDevIface {
* on unmanaged exit/crash.
*/
vu_queue_is_processed_in_order_cb queue_is_processed_in_order;
/* get the config space of the device */
vu_get_config_cb get_config;
/* set the config space of the device */
vu_set_config_cb set_config;
} VuDevIface;
typedef void (*vu_queue_handler_cb) (VuDev *dev, int qidx);

1
contrib/vhost-user-blk/Makefile.objs Normal file
View File

@ -0,0 +1 @@
vhost-user-blk-obj-y = vhost-user-blk.o

545
contrib/vhost-user-blk/vhost-user-blk.c Normal file
View File

@ -0,0 +1,545 @@
/*
* vhost-user-blk sample application
*
* Copyright (c) 2017 Intel Corporation. All rights reserved.
*
* Author:
* Changpeng Liu <changpeng.liu@intel.com>
*
* This work is based on the "vhost-user-scsi" sample and "virtio-blk" driver
* implementation by:
* Felipe Franciosi <felipe@nutanix.com>
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 only.
* See the COPYING file in the top-level directory.
*/
#include "qemu/osdep.h"
#include "standard-headers/linux/virtio_blk.h"
#include "contrib/libvhost-user/libvhost-user-glib.h"
#include "contrib/libvhost-user/libvhost-user.h"
#include <glib.h>
struct virtio_blk_inhdr {
unsigned char status;
};
/* vhost user block device */
typedef struct VubDev {
VugDev parent;
int blk_fd;
struct virtio_blk_config blkcfg;
char *blk_name;
GMainLoop *loop;
} VubDev;
typedef struct VubReq {
VuVirtqElement *elem;
int64_t sector_num;
size_t size;
struct virtio_blk_inhdr *in;
struct virtio_blk_outhdr *out;
VubDev *vdev_blk;
struct VuVirtq *vq;
} VubReq;
/* refer util/iov.c */
static size_t vub_iov_size(const struct iovec *iov,
const unsigned int iov_cnt)
{
size_t len;
unsigned int i;
len = 0;
for (i = 0; i < iov_cnt; i++) {
len += iov[i].iov_len;
}
return len;
}
static void vub_panic_cb(VuDev *vu_dev, const char *buf)
{
VugDev *gdev;
VubDev *vdev_blk;
assert(vu_dev);
gdev = container_of(vu_dev, VugDev, parent);
vdev_blk = container_of(gdev, VubDev, parent);
if (buf) {
g_warning("vu_panic: %s", buf);
}
g_main_loop_quit(vdev_blk->loop);
}
static void vub_req_complete(VubReq *req)
{
VugDev *gdev = &req->vdev_blk->parent;
VuDev *vu_dev = &gdev->parent;
/* IO size with 1 extra status byte */
vu_queue_push(vu_dev, req->vq, req->elem,
req->size + 1);
vu_queue_notify(vu_dev, req->vq);
if (req->elem) {
free(req->elem);
}
g_free(req);
}
static int vub_open(const char *file_name, bool wce)
{
int fd;
int flags = O_RDWR;
if (!wce) {
flags |= O_DIRECT;
}
fd = open(file_name, flags);
if (fd < 0) {
fprintf(stderr, "Cannot open file %s, %s\n", file_name,
strerror(errno));
return -1;
}
return fd;
}
static ssize_t
vub_readv(VubReq *req, struct iovec *iov, uint32_t iovcnt)
{
VubDev *vdev_blk = req->vdev_blk;
ssize_t rc;
if (!iovcnt) {
fprintf(stderr, "Invalid Read IOV count\n");
return -1;
}
req->size = vub_iov_size(iov, iovcnt);
rc = preadv(vdev_blk->blk_fd, iov, iovcnt, req->sector_num * 512);
if (rc < 0) {
fprintf(stderr, "%s, Sector %"PRIu64", Size %lu failed with %s\n",
vdev_blk->blk_name, req->sector_num, req->size,
strerror(errno));
return -1;
}
return rc;
}
static ssize_t
vub_writev(VubReq *req, struct iovec *iov, uint32_t iovcnt)
{
VubDev *vdev_blk = req->vdev_blk;
ssize_t rc;
if (!iovcnt) {
fprintf(stderr, "Invalid Write IOV count\n");
return -1;
}
req->size = vub_iov_size(iov, iovcnt);
rc = pwritev(vdev_blk->blk_fd, iov, iovcnt, req->sector_num * 512);
if (rc < 0) {
fprintf(stderr, "%s, Sector %"PRIu64", Size %lu failed with %s\n",
vdev_blk->blk_name, req->sector_num, req->size,
strerror(errno));
return -1;
}
return rc;
}
static void
vub_flush(VubReq *req)
{
VubDev *vdev_blk = req->vdev_blk;
fdatasync(vdev_blk->blk_fd);
}
static int vub_virtio_process_req(VubDev *vdev_blk,
VuVirtq *vq)
{
VugDev *gdev = &vdev_blk->parent;
VuDev *vu_dev = &gdev->parent;
VuVirtqElement *elem;
uint32_t type;
unsigned in_num;
unsigned out_num;
VubReq *req;
elem = vu_queue_pop(vu_dev, vq, sizeof(VuVirtqElement) + sizeof(VubReq));
if (!elem) {
return -1;
}
/* refer to hw/block/virtio_blk.c */
if (elem->out_num < 1 || elem->in_num < 1) {
fprintf(stderr, "virtio-blk request missing headers\n");
free(elem);
return -1;
}
req = g_new0(VubReq, 1);
req->vdev_blk = vdev_blk;
req->vq = vq;
req->elem = elem;
in_num = elem->in_num;
out_num = elem->out_num;
/* don't support VIRTIO_F_ANY_LAYOUT and virtio 1.0 only */
if (elem->out_sg[0].iov_len < sizeof(struct virtio_blk_outhdr)) {
fprintf(stderr, "Invalid outhdr size\n");
goto err;
}
req->out = (struct virtio_blk_outhdr *)elem->out_sg[0].iov_base;
out_num--;
if (elem->in_sg[in_num - 1].iov_len < sizeof(struct virtio_blk_inhdr)) {
fprintf(stderr, "Invalid inhdr size\n");
goto err;
}
req->in = (struct virtio_blk_inhdr *)elem->in_sg[in_num - 1].iov_base;
in_num--;
type = le32toh(req->out->type);
switch (type & ~(VIRTIO_BLK_T_OUT | VIRTIO_BLK_T_BARRIER)) {
case VIRTIO_BLK_T_IN: {
ssize_t ret = 0;
bool is_write = type & VIRTIO_BLK_T_OUT;
req->sector_num = le64toh(req->out->sector);
if (is_write) {
ret = vub_writev(req, &elem->out_sg[1], out_num);
} else {
ret = vub_readv(req, &elem->in_sg[0], in_num);
}
if (ret >= 0) {
req->in->status = VIRTIO_BLK_S_OK;
} else {
req->in->status = VIRTIO_BLK_S_IOERR;
}
vub_req_complete(req);
break;
}
case VIRTIO_BLK_T_FLUSH: {
vub_flush(req);
req->in->status = VIRTIO_BLK_S_OK;
vub_req_complete(req);
break;
}
case VIRTIO_BLK_T_GET_ID: {
size_t size = MIN(vub_iov_size(&elem->in_sg[0], in_num),
VIRTIO_BLK_ID_BYTES);
snprintf(elem->in_sg[0].iov_base, size, "%s", "vhost_user_blk");
req->in->status = VIRTIO_BLK_S_OK;
req->size = elem->in_sg[0].iov_len;
vub_req_complete(req);
break;
}
default: {
req->in->status = VIRTIO_BLK_S_UNSUPP;
vub_req_complete(req);
break;
}
}
return 0;
err:
free(elem);
g_free(req);
return -1;
}
static void vub_process_vq(VuDev *vu_dev, int idx)
{
VugDev *gdev;
VubDev *vdev_blk;
VuVirtq *vq;
int ret;
if ((idx < 0) || (idx >= VHOST_MAX_NR_VIRTQUEUE)) {
fprintf(stderr, "VQ Index out of range: %d\n", idx);
vub_panic_cb(vu_dev, NULL);
return;
}
gdev = container_of(vu_dev, VugDev, parent);
vdev_blk = container_of(gdev, VubDev, parent);
assert(vdev_blk);
vq = vu_get_queue(vu_dev, idx);
assert(vq);
while (1) {
ret = vub_virtio_process_req(vdev_blk, vq);
if (ret) {
break;
}
}
}
static void vub_queue_set_started(VuDev *vu_dev, int idx, bool started)
{
VuVirtq *vq;
assert(vu_dev);
vq = vu_get_queue(vu_dev, idx);
vu_set_queue_handler(vu_dev, vq, started ? vub_process_vq : NULL);
}
static uint64_t
vub_get_features(VuDev *dev)
{
return 1ull << VIRTIO_BLK_F_SIZE_MAX |
1ull << VIRTIO_BLK_F_SEG_MAX |
1ull << VIRTIO_BLK_F_TOPOLOGY |
1ull << VIRTIO_BLK_F_BLK_SIZE |
1ull << VIRTIO_BLK_F_FLUSH |
1ull << VIRTIO_BLK_F_CONFIG_WCE |
1ull << VIRTIO_F_VERSION_1 |
1ull << VHOST_USER_F_PROTOCOL_FEATURES;
}
static int
vub_get_config(VuDev *vu_dev, uint8_t *config, uint32_t len)
{
VugDev *gdev;
VubDev *vdev_blk;
gdev = container_of(vu_dev, VugDev, parent);
vdev_blk = container_of(gdev, VubDev, parent);
memcpy(config, &vdev_blk->blkcfg, len);
return 0;
}
static int
vub_set_config(VuDev *vu_dev, const uint8_t *data,
uint32_t offset, uint32_t size, uint32_t flags)
{
VugDev *gdev;
VubDev *vdev_blk;
uint8_t wce;
int fd;
/* don't support live migration */
if (flags != VHOST_SET_CONFIG_TYPE_MASTER) {
return -1;
}
gdev = container_of(vu_dev, VugDev, parent);
vdev_blk = container_of(gdev, VubDev, parent);
if (offset != offsetof(struct virtio_blk_config, wce) ||
size != 1) {
return -1;
}
wce = *data;
if (wce == vdev_blk->blkcfg.wce) {
/* Do nothing as same with old configuration */
return 0;
}
vdev_blk->blkcfg.wce = wce;
fprintf(stdout, "Write Cache Policy Changed\n");
if (vdev_blk->blk_fd >= 0) {
close(vdev_blk->blk_fd);
vdev_blk->blk_fd = -1;
}
fd = vub_open(vdev_blk->blk_name, wce);
if (fd < 0) {
fprintf(stderr, "Error to open block device %s\n", vdev_blk->blk_name);
vdev_blk->blk_fd = -1;
return -1;
}
vdev_blk->blk_fd = fd;
return 0;
}
static const VuDevIface vub_iface = {
.get_features = vub_get_features,
.queue_set_started = vub_queue_set_started,
.get_config = vub_get_config,
.set_config = vub_set_config,
};
static int unix_sock_new(char *unix_fn)
{
int sock;
struct sockaddr_un un;
size_t len;
assert(unix_fn);
sock = socket(AF_UNIX, SOCK_STREAM, 0);
if (sock <= 0) {
perror("socket");
return -1;
}
un.sun_family = AF_UNIX;
(void)snprintf(un.sun_path, sizeof(un.sun_path), "%s", unix_fn);
len = sizeof(un.sun_family) + strlen(un.sun_path);
(void)unlink(unix_fn);
if (bind(sock, (struct sockaddr *)&un, len) < 0) {
perror("bind");
goto fail;
}
if (listen(sock, 1) < 0) {
perror("listen");
goto fail;
}
return sock;
fail:
(void)close(sock);
return -1;
}
static void vub_free(struct VubDev *vdev_blk)
{
if (!vdev_blk) {
return;
}
g_main_loop_unref(vdev_blk->loop);
if (vdev_blk->blk_fd >= 0) {
close(vdev_blk->blk_fd);
}
g_free(vdev_blk);
}
static uint32_t
vub_get_blocksize(int fd)
{
uint32_t blocksize = 512;
#if defined(__linux__) && defined(BLKSSZGET)
if (ioctl(fd, BLKSSZGET, &blocksize) == 0) {
return blocklen;
}
#endif
return blocksize;
}
static void
vub_initialize_config(int fd, struct virtio_blk_config *config)
{
off64_t capacity;
capacity = lseek64(fd, 0, SEEK_END);
config->capacity = capacity >> 9;
config->blk_size = vub_get_blocksize(fd);
config->size_max = 65536;
config->seg_max = 128 - 2;
config->min_io_size = 1;
config->opt_io_size = 1;
config->num_queues = 1;
}
static VubDev *
vub_new(char *blk_file)
{
VubDev *vdev_blk;
vdev_blk = g_new0(VubDev, 1);
vdev_blk->loop = g_main_loop_new(NULL, FALSE);
vdev_blk->blk_fd = vub_open(blk_file, 0);
if (vdev_blk->blk_fd < 0) {
fprintf(stderr, "Error to open block device %s\n", blk_file);
vub_free(vdev_blk);
return NULL;
}
vdev_blk->blkcfg.wce = 0;
vdev_blk->blk_name = blk_file;
/* fill virtio_blk_config with block parameters */
vub_initialize_config(vdev_blk->blk_fd, &vdev_blk->blkcfg);
return vdev_blk;
}
int main(int argc, char **argv)
{
int opt;
char *unix_socket = NULL;
char *blk_file = NULL;
int lsock = -1, csock = -1;
VubDev *vdev_blk = NULL;
while ((opt = getopt(argc, argv, "b:s:h")) != -1) {
switch (opt) {
case 'b':
blk_file = g_strdup(optarg);
break;
case 's':
unix_socket = g_strdup(optarg);
break;
case 'h':
default:
printf("Usage: %s [-b block device or file, -s UNIX domain socket]"
" | [ -h ]\n", argv[0]);
return 0;
}
}
if (!unix_socket || !blk_file) {
printf("Usage: %s [-b block device or file, -s UNIX domain socket] |"
" [ -h ]\n", argv[0]);
return -1;
}
lsock = unix_sock_new(unix_socket);
if (lsock < 0) {
goto err;
}
csock = accept(lsock, (void *)0, (void *)0);
if (csock < 0) {
fprintf(stderr, "Accept error %s\n", strerror(errno));
goto err;
}
vdev_blk = vub_new(blk_file);
if (!vdev_blk) {
goto err;
}
vug_init(&vdev_blk->parent, csock, vub_panic_cb, &vub_iface);
g_main_loop_run(vdev_blk->loop);
vug_deinit(&vdev_blk->parent);
err:
vub_free(vdev_blk);
if (csock >= 0) {
close(csock);
}
if (lsock >= 0) {
close(lsock);
}
g_free(unix_socket);
g_free(blk_file);
return 0;
}

1
default-configs/pci.mak
View File

@ -43,3 +43,4 @@ CONFIG_VGA_PCI=y
CONFIG_IVSHMEM_DEVICE=$(CONFIG_IVSHMEM)
CONFIG_ROCKER=y
CONFIG_VHOST_USER_SCSI=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
CONFIG_VHOST_USER_BLK=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))

1
default-configs/s390x-softmmu.mak
View File

@ -1,6 +1,7 @@
CONFIG_PCI=y
CONFIG_VIRTIO_PCI=$(CONFIG_PCI)
CONFIG_VHOST_USER_SCSI=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
CONFIG_VHOST_USER_BLK=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
CONFIG_VIRTIO=y
CONFIG_SCLPCONSOLE=y
CONFIG_TERMINAL3270=y

59
docs/interop/vhost-user.txt
View File

@ -119,6 +119,19 @@ Depending on the request type, payload can be:
- 3: IOTLB invalidate
- 4: IOTLB access fail
* Virtio device config space
-----------------------------------
| offset | size | flags | payload |
-----------------------------------
Offset: a 32-bit offset of virtio device's configuration space
Size: a 32-bit configuration space access size in bytes
Flags: a 32-bit value:
- 0: Vhost master messages used for writeable fields
- 1: Vhost master messages used for live migration
Payload: Size bytes array holding the contents of the virtio
device's configuration space
In QEMU the vhost-user message is implemented with the following struct:
typedef struct VhostUserMsg {
@ -132,6 +145,7 @@ typedef struct VhostUserMsg {
VhostUserMemory memory;
VhostUserLog log;
struct vhost_iotlb_msg iotlb;
VhostUserConfig config;
};
} QEMU_PACKED VhostUserMsg;
@ -214,8 +228,8 @@ Multiple queue is treated as a protocol extension, hence the slave has to
implement protocol features first. The multiple queues feature is supported
only when the protocol feature VHOST_USER_PROTOCOL_F_MQ (bit 0) is set.
The max number of queues the slave supports can be queried with message
VHOST_USER_GET_PROTOCOL_FEATURES. Master should stop when the number of
The max number of queue pairs the slave supports can be queried with message
VHOST_USER_GET_QUEUE_NUM. Master should stop when the number of
requested queues is bigger than that.
As all queues share one connection, the master uses a unique index for each
@ -623,6 +637,32 @@ Master message types
and expect this message once (per VQ) during device configuration
(ie. before the master starts the VQ).
* VHOST_USER_GET_CONFIG
Id: 24
Equivalent ioctl: N/A
Master payload: virtio device config space
Slave payload: virtio device config space
Submitted by the vhost-user master to fetch the contents of the virtio
device configuration space, vhost-user slave's payload size MUST match
master's request, vhost-user slave uses zero length of payload to
indicate an error to vhost-user master. The vhost-user master may
cache the contents to avoid repeated VHOST_USER_GET_CONFIG calls.
* VHOST_USER_SET_CONFIG
Id: 25
Equivalent ioctl: N/A
Master payload: virtio device config space
Slave payload: N/A
Submitted by the vhost-user master when the Guest changes the virtio
device configuration space and also can be used for live migration
on the destination host. The vhost-user slave must check the flags
field, and slaves MUST NOT accept SET_CONFIG for read-only
configuration space fields unless the live migration bit is set.
Slave message types
-------------------
@ -641,6 +681,21 @@ Slave message types
This request should be send only when VIRTIO_F_IOMMU_PLATFORM feature
has been successfully negotiated.
* VHOST_USER_SLAVE_CONFIG_CHANGE_MSG
Id: 2
Equivalent ioctl: N/A
Slave payload: N/A
Master payload: N/A
Vhost-user slave sends such messages to notify that the virtio device's
configuration space has changed, for those host devices which can support
such feature, host driver can send VHOST_USER_GET_CONFIG message to slave
to get the latest content. If VHOST_USER_PROTOCOL_F_REPLY_ACK is
negotiated, and slave set the VHOST_USER_NEED_REPLY flag, master must
respond with zero when operation is successfully completed, or non-zero
otherwise.
VHOST_USER_PROTOCOL_F_REPLY_ACK:
-------------------------------
The original vhost-user specification only demands replies for certain

3
hw/block/Makefile.objs
View File

@ -13,3 +13,6 @@ obj-$(CONFIG_SH4) += tc58128.o
obj-$(CONFIG_VIRTIO) += virtio-blk.o
obj-$(CONFIG_VIRTIO) += dataplane/
ifeq ($(CONFIG_VIRTIO),y)
obj-$(CONFIG_VHOST_USER_BLK) += vhost-user-blk.o
endif

359
hw/block/vhost-user-blk.c Normal file
View File

@ -0,0 +1,359 @@
/*
* vhost-user-blk host device
*
* Copyright(C) 2017 Intel Corporation.
*
* Authors:
* Changpeng Liu <changpeng.liu@intel.com>
*
* Largely based on the "vhost-user-scsi.c" and "vhost-scsi.c" implemented by:
* Felipe Franciosi <felipe@nutanix.com>
* Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
* Nicholas Bellinger <nab@risingtidesystems.com>
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "qemu/typedefs.h"
#include "qemu/cutils.h"
#include "qom/object.h"
#include "hw/qdev-core.h"
#include "hw/virtio/vhost.h"
#include "hw/virtio/vhost-user-blk.h"
#include "hw/virtio/virtio.h"
#include "hw/virtio/virtio-bus.h"
#include "hw/virtio/virtio-access.h"
static const int user_feature_bits[] = {
VIRTIO_BLK_F_SIZE_MAX,
VIRTIO_BLK_F_SEG_MAX,
VIRTIO_BLK_F_GEOMETRY,
VIRTIO_BLK_F_BLK_SIZE,
VIRTIO_BLK_F_TOPOLOGY,
VIRTIO_BLK_F_MQ,
VIRTIO_BLK_F_RO,
VIRTIO_BLK_F_FLUSH,
VIRTIO_BLK_F_CONFIG_WCE,
VIRTIO_F_VERSION_1,
VIRTIO_RING_F_INDIRECT_DESC,
VIRTIO_RING_F_EVENT_IDX,
VIRTIO_F_NOTIFY_ON_EMPTY,
VHOST_INVALID_FEATURE_BIT
};
static void vhost_user_blk_update_config(VirtIODevice *vdev, uint8_t *config)
{
VHostUserBlk *s = VHOST_USER_BLK(vdev);
memcpy(config, &s->blkcfg, sizeof(struct virtio_blk_config));
}
static void vhost_user_blk_set_config(VirtIODevice *vdev, const uint8_t *config)
{
VHostUserBlk *s = VHOST_USER_BLK(vdev);
struct virtio_blk_config *blkcfg = (struct virtio_blk_config *)config;
int ret;
if (blkcfg->wce == s->blkcfg.wce) {
return;
}
ret = vhost_dev_set_config(&s->dev, &blkcfg->wce,
offsetof(struct virtio_blk_config, wce),
sizeof(blkcfg->wce),
VHOST_SET_CONFIG_TYPE_MASTER);
if (ret) {
error_report("set device config space failed");
return;
}
s->blkcfg.wce = blkcfg->wce;
}
static int vhost_user_blk_handle_config_change(struct vhost_dev *dev)
{
int ret;
struct virtio_blk_config blkcfg;
VHostUserBlk *s = VHOST_USER_BLK(dev->vdev);
ret = vhost_dev_get_config(dev, (uint8_t *)&blkcfg,
sizeof(struct virtio_blk_config));
if (ret < 0) {
error_report("get config space failed");
return -1;
}
/* valid for resize only */
if (blkcfg.capacity != s->blkcfg.capacity) {
s->blkcfg.capacity = blkcfg.capacity;
memcpy(dev->vdev->config, &s->blkcfg, sizeof(struct virtio_blk_config));
virtio_notify_config(dev->vdev);
}
return 0;
}
const VhostDevConfigOps blk_ops = {
.vhost_dev_config_notifier = vhost_user_blk_handle_config_change,
};
static void vhost_user_blk_start(VirtIODevice *vdev)
{
VHostUserBlk *s = VHOST_USER_BLK(vdev);
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
int i, ret;
if (!k->set_guest_notifiers) {
error_report("binding does not support guest notifiers");
return;
}
ret = vhost_dev_enable_notifiers(&s->dev, vdev);
if (ret < 0) {
error_report("Error enabling host notifiers: %d", -ret);
return;
}
ret = k->set_guest_notifiers(qbus->parent, s->dev.nvqs, true);
if (ret < 0) {
error_report("Error binding guest notifier: %d", -ret);
goto err_host_notifiers;
}
s->dev.acked_features = vdev->guest_features;
ret = vhost_dev_start(&s->dev, vdev);
if (ret < 0) {
error_report("Error starting vhost: %d", -ret);
goto err_guest_notifiers;
}
/* guest_notifier_mask/pending not used yet, so just unmask
* everything here. virtio-pci will do the right thing by
* enabling/disabling irqfd.
*/
for (i = 0; i < s->dev.nvqs; i++) {
vhost_virtqueue_mask(&s->dev, vdev, i, false);
}
return;
err_guest_notifiers:
k->set_guest_notifiers(qbus->parent, s->dev.nvqs, false);
err_host_notifiers:
vhost_dev_disable_notifiers(&s->dev, vdev);
}
static void vhost_user_blk_stop(VirtIODevice *vdev)
{
VHostUserBlk *s = VHOST_USER_BLK(vdev);
BusState *qbus = BUS(qdev_get_parent_bus(DEVICE(vdev)));
VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus);
int ret;
if (!k->set_guest_notifiers) {
return;
}
vhost_dev_stop(&s->dev, vdev);
ret = k->set_guest_notifiers(qbus->parent, s->dev.nvqs, false);
if (ret < 0) {
error_report("vhost guest notifier cleanup failed: %d", ret);
return;
}
vhost_dev_disable_notifiers(&s->dev, vdev);
}
static void vhost_user_blk_set_status(VirtIODevice *vdev, uint8_t status)
{
VHostUserBlk *s = VHOST_USER_BLK(vdev);
bool should_start = status & VIRTIO_CONFIG_S_DRIVER_OK;
if (!vdev->vm_running) {
should_start = false;
}
if (s->dev.started == should_start) {
return;
}
if (should_start) {
vhost_user_blk_start(vdev);
} else {
vhost_user_blk_stop(vdev);
}
}
static uint64_t vhost_user_blk_get_features(VirtIODevice *vdev,
uint64_t features,
Error **errp)
{
VHostUserBlk *s = VHOST_USER_BLK(vdev);
uint64_t get_features;
/* Turn on pre-defined features */
virtio_add_feature(&features, VIRTIO_BLK_F_SEG_MAX);
virtio_add_feature(&features, VIRTIO_BLK_F_GEOMETRY);
virtio_add_feature(&features, VIRTIO_BLK_F_TOPOLOGY);
virtio_add_feature(&features, VIRTIO_BLK_F_BLK_SIZE);
virtio_add_feature(&features, VIRTIO_BLK_F_FLUSH);
if (s->config_wce) {
virtio_add_feature(&features, VIRTIO_BLK_F_CONFIG_WCE);
}
if (s->config_ro) {
virtio_add_feature(&features, VIRTIO_BLK_F_RO);
}
if (s->num_queues > 1) {
virtio_add_feature(&features, VIRTIO_BLK_F_MQ);
}
get_features = vhost_get_features(&s->dev, user_feature_bits, features);
return get_features;
}
static void vhost_user_blk_handle_output(VirtIODevice *vdev, VirtQueue *vq)
{
}
static void vhost_user_blk_device_realize(DeviceState *dev, Error **errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VHostUserBlk *s = VHOST_USER_BLK(vdev);
int i, ret;
if (!s->chardev.chr) {
error_setg(errp, "vhost-user-blk: chardev is mandatory");
return;
}
if (!s->num_queues || s->num_queues > VIRTIO_QUEUE_MAX) {
error_setg(errp, "vhost-user-blk: invalid number of IO queues");
return;
}
if (!s->queue_size) {
error_setg(errp, "vhost-user-blk: queue size must be non-zero");
return;
}
virtio_init(vdev, "virtio-blk", VIRTIO_ID_BLOCK,
sizeof(struct virtio_blk_config));
for (i = 0; i < s->num_queues; i++) {
virtio_add_queue(vdev, s->queue_size,
vhost_user_blk_handle_output);
}
s->dev.nvqs = s->num_queues;
s->dev.vqs = g_new(struct vhost_virtqueue, s->dev.nvqs);
s->dev.vq_index = 0;
s->dev.backend_features = 0;
ret = vhost_dev_init(&s->dev, &s->chardev, VHOST_BACKEND_TYPE_USER, 0);
if (ret < 0) {
error_setg(errp, "vhost-user-blk: vhost initialization failed: %s",
strerror(-ret));
goto virtio_err;
}
ret = vhost_dev_get_config(&s->dev, (uint8_t *)&s->blkcfg,
sizeof(struct virtio_blk_config));
if (ret < 0) {
error_setg(errp, "vhost-user-blk: get block config failed");
goto vhost_err;
}
if (s->blkcfg.num_queues != s->num_queues) {
s->blkcfg.num_queues = s->num_queues;
}
vhost_dev_set_config_notifier(&s->dev, &blk_ops);
return;
vhost_err:
vhost_dev_cleanup(&s->dev);
virtio_err:
g_free(s->dev.vqs);
virtio_cleanup(vdev);
}
static void vhost_user_blk_device_unrealize(DeviceState *dev, Error **errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VHostUserBlk *s = VHOST_USER_BLK(dev);
vhost_user_blk_set_status(vdev, 0);
vhost_dev_cleanup(&s->dev);
g_free(s->dev.vqs);
virtio_cleanup(vdev);
}
static void vhost_user_blk_instance_init(Object *obj)
{
VHostUserBlk *s = VHOST_USER_BLK(obj);
device_add_bootindex_property(obj, &s->bootindex, "bootindex",
"/disk@0,0", DEVICE(obj), NULL);
}
static const VMStateDescription vmstate_vhost_user_blk = {
.name = "vhost-user-blk",
.minimum_version_id = 1,
.version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_VIRTIO_DEVICE,
VMSTATE_END_OF_LIST()
},
};
static Property vhost_user_blk_properties[] = {
DEFINE_PROP_CHR("chardev", VHostUserBlk, chardev),
DEFINE_PROP_UINT16("num-queues", VHostUserBlk, num_queues, 1),
DEFINE_PROP_UINT32("queue-size", VHostUserBlk, queue_size, 128),
DEFINE_PROP_BIT("config-wce", VHostUserBlk, config_wce, 0, true),
DEFINE_PROP_BIT("config-ro", VHostUserBlk, config_ro, 0, false),
DEFINE_PROP_END_OF_LIST(),
};
static void vhost_user_blk_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
dc->props = vhost_user_blk_properties;
dc->vmsd = &vmstate_vhost_user_blk;
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
vdc->realize = vhost_user_blk_device_realize;
vdc->unrealize = vhost_user_blk_device_unrealize;
vdc->get_config = vhost_user_blk_update_config;
vdc->set_config = vhost_user_blk_set_config;
vdc->get_features = vhost_user_blk_get_features;
vdc->set_status = vhost_user_blk_set_status;
}
static const TypeInfo vhost_user_blk_info = {
.name = TYPE_VHOST_USER_BLK,
.parent = TYPE_VIRTIO_DEVICE,
.instance_size = sizeof(VHostUserBlk),
.instance_init = vhost_user_blk_instance_init,
.class_init = vhost_user_blk_class_init,
};
static void virtio_register_types(void)
{
type_register_static(&vhost_user_blk_info);
}
type_init(virtio_register_types)

5
hw/i386/acpi-build.c
View File

@ -2394,7 +2394,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
}
mem_base = 1ULL << 32;
mem_len = next_base - pcms->below_4g_mem_size;
next_base += (1ULL << 32) - pcms->below_4g_mem_size;
next_base = mem_base + mem_len;
}
numamem = acpi_data_push(table_data, sizeof *numamem);
build_srat_memory(numamem, mem_base, mem_len, i - 1,
@ -2473,6 +2473,7 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker)
AcpiDmarDeviceScope *scope = NULL;
/* Root complex IOAPIC use one path[0] only */
size_t ioapic_scope_size = sizeof(*scope) + sizeof(scope->path[0]);
IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu);
assert(iommu);
if (iommu->intr_supported) {
@ -2480,7 +2481,7 @@ build_dmar_q35(GArray *table_data, BIOSLinker *linker)
}
dmar = acpi_data_push(table_data, sizeof(*dmar));
dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1;
dmar->host_address_width = intel_iommu->aw_bits - 1;
dmar->flags = dmar_flags;
/* DMAR Remapping Hardware Unit Definition structure */

13
hw/i386/amd_iommu.c
View File

@ -1144,18 +1144,9 @@ static void amdvi_realize(DeviceState *dev, Error **err)
AMDVIState *s = AMD_IOMMU_DEVICE(dev);
X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(dev);
MachineState *ms = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(ms);
PCMachineState *pcms =
PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE));
PCIBus *bus;
PCMachineState *pcms = PC_MACHINE(ms);
PCIBus *bus = pcms->bus;
if (!pcms) {
error_setg(err, "Machine-type '%s' not supported by amd-iommu",
mc->name);
return;
}
bus = pcms->bus;
s->iotlb = g_hash_table_new_full(amdvi_uint64_hash,
amdvi_uint64_equal, g_free, g_free);

132
hw/i386/intel_iommu.c
View File

@ -521,9 +521,9 @@ static inline dma_addr_t vtd_ce_get_slpt_base(VTDContextEntry *ce)
return ce->lo & VTD_CONTEXT_ENTRY_SLPTPTR;
}
static inline uint64_t vtd_get_slpte_addr(uint64_t slpte)
static inline uint64_t vtd_get_slpte_addr(uint64_t slpte, uint8_t aw)
{
return slpte & VTD_SL_PT_BASE_ADDR_MASK;
return slpte & VTD_SL_PT_BASE_ADDR_MASK(aw);
}
/* Whether the pte indicates the address of the page frame */
@ -608,35 +608,29 @@ static inline bool vtd_ce_type_check(X86IOMMUState *x86_iommu,
return true;
}
static inline uint64_t vtd_iova_limit(VTDContextEntry *ce)
static inline uint64_t vtd_iova_limit(VTDContextEntry *ce, uint8_t aw)
{
uint32_t ce_agaw = vtd_ce_get_agaw(ce);
return 1ULL << MIN(ce_agaw, VTD_MGAW);
return 1ULL << MIN(ce_agaw, aw);
}
/* Return true if IOVA passes range check, otherwise false. */
static inline bool vtd_iova_range_check(uint64_t iova, VTDContextEntry *ce)
static inline bool vtd_iova_range_check(uint64_t iova, VTDContextEntry *ce,
uint8_t aw)
{
/*
* Check if @iova is above 2^X-1, where X is the minimum of MGAW
* in CAP_REG and AW in context-entry.
*/
return !(iova & ~(vtd_iova_limit(ce) - 1));
return !(iova & ~(vtd_iova_limit(ce, aw) - 1));
}
static const uint64_t vtd_paging_entry_rsvd_field[] = {
[0] = ~0ULL,
/* For not large page */
[1] = 0x800ULL | ~(VTD_HAW_MASK | VTD_SL_IGN_COM),
[2] = 0x800ULL | ~(VTD_HAW_MASK | VTD_SL_IGN_COM),
[3] = 0x800ULL | ~(VTD_HAW_MASK | VTD_SL_IGN_COM),
[4] = 0x880ULL | ~(VTD_HAW_MASK | VTD_SL_IGN_COM),
/* For large page */
[5] = 0x800ULL | ~(VTD_HAW_MASK | VTD_SL_IGN_COM),
[6] = 0x1ff800ULL | ~(VTD_HAW_MASK | VTD_SL_IGN_COM),
[7] = 0x3ffff800ULL | ~(VTD_HAW_MASK | VTD_SL_IGN_COM),
[8] = 0x880ULL | ~(VTD_HAW_MASK | VTD_SL_IGN_COM),
};
/*
* Rsvd field masks for spte:
* Index [1] to [4] 4k pages
* Index [5] to [8] large pages
*/
static uint64_t vtd_paging_entry_rsvd_field[9];
static bool vtd_slpte_nonzero_rsvd(uint64_t slpte, uint32_t level)
{
@ -676,7 +670,7 @@ static VTDBus *vtd_find_as_from_bus_num(IntelIOMMUState *s, uint8_t bus_num)
*/
static int vtd_iova_to_slpte(VTDContextEntry *ce, uint64_t iova, bool is_write,
uint64_t *slptep, uint32_t *slpte_level,
bool *reads, bool *writes)
bool *reads, bool *writes, uint8_t aw_bits)
{
dma_addr_t addr = vtd_ce_get_slpt_base(ce);
uint32_t level = vtd_ce_get_level(ce);
@ -684,7 +678,7 @@ static int vtd_iova_to_slpte(VTDContextEntry *ce, uint64_t iova, bool is_write,
uint64_t slpte;
uint64_t access_right_check;
if (!vtd_iova_range_check(iova, ce)) {
if (!vtd_iova_range_check(iova, ce, aw_bits)) {
trace_vtd_err_dmar_iova_overflow(iova);
return -VTD_FR_ADDR_BEYOND_MGAW;
}
@ -721,7 +715,7 @@ static int vtd_iova_to_slpte(VTDContextEntry *ce, uint64_t iova, bool is_write,
*slpte_level = level;
return 0;
}
addr = vtd_get_slpte_addr(slpte);
addr = vtd_get_slpte_addr(slpte, aw_bits);
level--;
}
}
@ -739,11 +733,12 @@ typedef int (*vtd_page_walk_hook)(IOMMUTLBEntry *entry, void *private);
* @read: whether parent level has read permission
* @write: whether parent level has write permission
* @notify_unmap: whether we should notify invalid entries
* @aw: maximum address width
*/
static int vtd_page_walk_level(dma_addr_t addr, uint64_t start,
uint64_t end, vtd_page_walk_hook hook_fn,
void *private, uint32_t level,
bool read, bool write, bool notify_unmap)
void *private, uint32_t level, bool read,
bool write, bool notify_unmap, uint8_t aw)
{
bool read_cur, write_cur, entry_valid;
uint32_t offset;
@ -790,7 +785,7 @@ static int vtd_page_walk_level(dma_addr_t addr, uint64_t start,
entry.target_as = &address_space_memory;
entry.iova = iova & subpage_mask;
/* NOTE: this is only meaningful if entry_valid == true */
entry.translated_addr = vtd_get_slpte_addr(slpte);
entry.translated_addr = vtd_get_slpte_addr(slpte, aw);
entry.addr_mask = ~subpage_mask;
entry.perm = IOMMU_ACCESS_FLAG(read_cur, write_cur);
if (!entry_valid && !notify_unmap) {
@ -810,10 +805,10 @@ static int vtd_page_walk_level(dma_addr_t addr, uint64_t start,
trace_vtd_page_walk_skip_perm(iova, iova_next);
goto next;
}
ret = vtd_page_walk_level(vtd_get_slpte_addr(slpte), iova,
ret = vtd_page_walk_level(vtd_get_slpte_addr(slpte, aw), iova,
MIN(iova_next, end), hook_fn, private,
level - 1, read_cur, write_cur,
notify_unmap);
notify_unmap, aw);
if (ret < 0) {
return ret;
}
@ -834,25 +829,26 @@ next:
* @end: IOVA range end address (start <= addr < end)
* @hook_fn: the hook that to be called for each detected area
* @private: private data for the hook function
* @aw: maximum address width
*/
static int vtd_page_walk(VTDContextEntry *ce, uint64_t start, uint64_t end,
vtd_page_walk_hook hook_fn, void *private,
bool notify_unmap)
bool notify_unmap, uint8_t aw)
{
dma_addr_t addr = vtd_ce_get_slpt_base(ce);
uint32_t level = vtd_ce_get_level(ce);
if (!vtd_iova_range_check(start, ce)) {
if (!vtd_iova_range_check(start, ce, aw)) {
return -VTD_FR_ADDR_BEYOND_MGAW;
}
if (!vtd_iova_range_check(end, ce)) {
if (!vtd_iova_range_check(end, ce, aw)) {
/* Fix end so that it reaches the maximum */
end = vtd_iova_limit(ce);
end = vtd_iova_limit(ce, aw);
}
return vtd_page_walk_level(addr, start, end, hook_fn, private,
level, true, true, notify_unmap);
level, true, true, notify_unmap, aw);
}
/* Map a device to its corresponding domain (context-entry) */
@ -874,7 +870,7 @@ static int vtd_dev_to_context_entry(IntelIOMMUState *s, uint8_t bus_num,
return -VTD_FR_ROOT_ENTRY_P;
}
if (re.rsvd || (re.val & VTD_ROOT_ENTRY_RSVD)) {
if (re.rsvd || (re.val & VTD_ROOT_ENTRY_RSVD(s->aw_bits))) {
trace_vtd_re_invalid(re.rsvd, re.val);
return -VTD_FR_ROOT_ENTRY_RSVD;
}
@ -891,7 +887,7 @@ static int vtd_dev_to_context_entry(IntelIOMMUState *s, uint8_t bus_num,
}
if ((ce->hi & VTD_CONTEXT_ENTRY_RSVD_HI) ||
(ce->lo & VTD_CONTEXT_ENTRY_RSVD_LO)) {
(ce->lo & VTD_CONTEXT_ENTRY_RSVD_LO(s->aw_bits))) {
trace_vtd_ce_invalid(ce->hi, ce->lo);
return -VTD_FR_CONTEXT_ENTRY_RSVD;
}
@ -1173,7 +1169,7 @@ static bool vtd_do_iommu_translate(VTDAddressSpace *vtd_as, PCIBus *bus,
}
ret_fr = vtd_iova_to_slpte(&ce, addr, is_write, &slpte, &level,
&reads, &writes);
&reads, &writes, s->aw_bits);
if (ret_fr) {
ret_fr = -ret_fr;
if (is_fpd_set && vtd_is_qualified_fault(ret_fr)) {
@ -1190,7 +1186,7 @@ static bool vtd_do_iommu_translate(VTDAddressSpace *vtd_as, PCIBus *bus,
access_flags, level);
out:
entry->iova = addr & page_mask;
entry->translated_addr = vtd_get_slpte_addr(slpte) & page_mask;
entry->translated_addr = vtd_get_slpte_addr(slpte, s->aw_bits) & page_mask;
entry->addr_mask = ~page_mask;
entry->perm = access_flags;
return true;
@ -1207,7 +1203,7 @@ static void vtd_root_table_setup(IntelIOMMUState *s)
{
s->root = vtd_get_quad_raw(s, DMAR_RTADDR_REG);
s->root_extended = s->root & VTD_RTADDR_RTT;
s->root &= VTD_RTADDR_ADDR_MASK;
s->root &= VTD_RTADDR_ADDR_MASK(s->aw_bits);
trace_vtd_reg_dmar_root(s->root, s->root_extended);
}
@ -1223,7 +1219,7 @@ static void vtd_interrupt_remap_table_setup(IntelIOMMUState *s)
uint64_t value = 0;
value = vtd_get_quad_raw(s, DMAR_IRTA_REG);
s->intr_size = 1UL << ((value & VTD_IRTA_SIZE_MASK) + 1);
s->intr_root = value & VTD_IRTA_ADDR_MASK;
s->intr_root = value & VTD_IRTA_ADDR_MASK(s->aw_bits);
s->intr_eime = value & VTD_IRTA_EIME;
/* Notify global invalidation */
@ -1399,7 +1395,7 @@ static void vtd_iotlb_page_invalidate_notify(IntelIOMMUState *s,
if (!ret && domain_id == VTD_CONTEXT_ENTRY_DID(ce.hi)) {
vtd_page_walk(&ce, addr, addr + (1 << am) * VTD_PAGE_SIZE,
vtd_page_invalidate_notify_hook,
(void *)&vtd_as->iommu, true);
(void *)&vtd_as->iommu, true, s->aw_bits);
}
}
}
@ -1479,7 +1475,7 @@ static void vtd_handle_gcmd_qie(IntelIOMMUState *s, bool en)
trace_vtd_inv_qi_enable(en);
if (en) {
s->iq = iqa_val & VTD_IQA_IQA_MASK;
s->iq = iqa_val & VTD_IQA_IQA_MASK(s->aw_bits);
/* 2^(x+8) entries */
s->iq_size = 1UL << ((iqa_val & VTD_IQA_QS) + 8);
s->qi_enabled = true;
@ -2410,6 +2406,8 @@ static Property vtd_properties[] = {
DEFINE_PROP_ON_OFF_AUTO("eim", IntelIOMMUState, intr_eim,
ON_OFF_AUTO_AUTO),
DEFINE_PROP_BOOL("x-buggy-eim", IntelIOMMUState, buggy_eim, false),
DEFINE_PROP_UINT8("x-aw-bits", IntelIOMMUState, aw_bits,
VTD_HOST_ADDRESS_WIDTH),
DEFINE_PROP_BOOL("caching-mode", IntelIOMMUState, caching_mode, FALSE),
DEFINE_PROP_END_OF_LIST(),
};
@ -2765,6 +2763,7 @@ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n)
hwaddr size;
hwaddr start = n->start;
hwaddr end = n->end;
IntelIOMMUState *s = as->iommu_state;
/*
* Note: all the codes in this function has a assumption that IOVA
@ -2772,12 +2771,12 @@ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n)
* VT-d spec), otherwise we need to consider overflow of 64 bits.
*/
if (end > VTD_ADDRESS_SIZE) {
if (end > VTD_ADDRESS_SIZE(s->aw_bits)) {
/*
* Don't need to unmap regions that is bigger than the whole
* VT-d supported address space size
*/
end = VTD_ADDRESS_SIZE;
end = VTD_ADDRESS_SIZE(s->aw_bits);
}
assert(start <= end);
@ -2789,9 +2788,9 @@ static void vtd_address_space_unmap(VTDAddressSpace *as, IOMMUNotifier *n)
* suite the minimum available mask.
*/
int n = 64 - clz64(size);
if (n > VTD_MGAW) {
if (n > s->aw_bits) {
/* should not happen, but in case it happens, limit it */
n = VTD_MGAW;
n = s->aw_bits;
}
size = 1ULL << n;
}
@ -2851,7 +2850,8 @@ static void vtd_iommu_replay(IOMMUMemoryRegion *iommu_mr, IOMMUNotifier *n)
PCI_FUNC(vtd_as->devfn),
VTD_CONTEXT_ENTRY_DID(ce.hi),
ce.hi, ce.lo);
vtd_page_walk(&ce, 0, ~0ULL, vtd_replay_hook, (void *)n, false);
vtd_page_walk(&ce, 0, ~0ULL, vtd_replay_hook, (void *)n, false,
s->aw_bits);
} else {
trace_vtd_replay_ce_invalid(bus_n, PCI_SLOT(vtd_as->devfn),
PCI_FUNC(vtd_as->devfn));
@ -2882,10 +2882,27 @@ static void vtd_init(IntelIOMMUState *s)
s->qi_enabled = false;
s->iq_last_desc_type = VTD_INV_DESC_NONE;
s->next_frcd_reg = 0;
s->cap = VTD_CAP_FRO | VTD_CAP_NFR | VTD_CAP_ND | VTD_CAP_MGAW |
VTD_CAP_SAGAW | VTD_CAP_MAMV | VTD_CAP_PSI | VTD_CAP_SLLPS;
s->cap = VTD_CAP_FRO | VTD_CAP_NFR | VTD_CAP_ND |
VTD_CAP_MAMV | VTD_CAP_PSI | VTD_CAP_SLLPS |
VTD_CAP_SAGAW_39bit | VTD_CAP_MGAW(s->aw_bits);
if (s->aw_bits == VTD_HOST_AW_48BIT) {
s->cap |= VTD_CAP_SAGAW_48bit;
}
s->ecap = VTD_ECAP_QI | VTD_ECAP_IRO;
/*
* Rsvd field masks for spte
*/
vtd_paging_entry_rsvd_field[0] = ~0ULL;
vtd_paging_entry_rsvd_field[1] = VTD_SPTE_PAGE_L1_RSVD_MASK(s->aw_bits);
vtd_paging_entry_rsvd_field[2] = VTD_SPTE_PAGE_L2_RSVD_MASK(s->aw_bits);
vtd_paging_entry_rsvd_field[3] = VTD_SPTE_PAGE_L3_RSVD_MASK(s->aw_bits);
vtd_paging_entry_rsvd_field[4] = VTD_SPTE_PAGE_L4_RSVD_MASK(s->aw_bits);
vtd_paging_entry_rsvd_field[5] = VTD_SPTE_LPAGE_L1_RSVD_MASK(s->aw_bits);
vtd_paging_entry_rsvd_field[6] = VTD_SPTE_LPAGE_L2_RSVD_MASK(s->aw_bits);
vtd_paging_entry_rsvd_field[7] = VTD_SPTE_LPAGE_L3_RSVD_MASK(s->aw_bits);
vtd_paging_entry_rsvd_field[8] = VTD_SPTE_LPAGE_L4_RSVD_MASK(s->aw_bits);
if (x86_iommu->intr_supported) {
s->ecap |= VTD_ECAP_IR | VTD_ECAP_MHMV;
if (s->intr_eim == ON_OFF_AUTO_ON) {
@ -3021,26 +3038,25 @@ static bool vtd_decide_config(IntelIOMMUState *s, Error **errp)
}
}
/* Currently only address widths supported are 39 and 48 bits */
if ((s->aw_bits != VTD_HOST_AW_39BIT) &&
(s->aw_bits != VTD_HOST_AW_48BIT)) {
error_setg(errp, "Supported values for x-aw-bits are: %d, %d",
VTD_HOST_AW_39BIT, VTD_HOST_AW_48BIT);
return false;
}
return true;
}
static void vtd_realize(DeviceState *dev, Error **errp)
{
MachineState *ms = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(ms);
PCMachineState *pcms =
PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE));
PCIBus *bus;
PCMachineState *pcms = PC_MACHINE(ms);
PCIBus *bus = pcms->bus;
IntelIOMMUState *s = INTEL_IOMMU_DEVICE(dev);
X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(dev);
if (!pcms) {
error_setg(errp, "Machine-type '%s' not supported by intel-iommu",
mc->name);
return;
}
bus = pcms->bus;
x86_iommu->type = TYPE_INTEL;
if (!vtd_decide_config(s, errp)) {

43
hw/i386/intel_iommu_internal.h
View File

@ -131,7 +131,7 @@
#define VTD_TLB_DID(val) (((val) >> 32) & VTD_DOMAIN_ID_MASK)
/* IVA_REG */
#define VTD_IVA_ADDR(val) ((val) & ~0xfffULL & ((1ULL << VTD_MGAW) - 1))
#define VTD_IVA_ADDR(val) ((val) & ~0xfffULL)
#define VTD_IVA_AM(val) ((val) & 0x3fULL)
/* GCMD_REG */
@ -172,10 +172,10 @@
/* RTADDR_REG */
#define VTD_RTADDR_RTT (1ULL << 11)
#define VTD_RTADDR_ADDR_MASK (VTD_HAW_MASK ^ 0xfffULL)
#define VTD_RTADDR_ADDR_MASK(aw) (VTD_HAW_MASK(aw) ^ 0xfffULL)
/* IRTA_REG */
#define VTD_IRTA_ADDR_MASK (VTD_HAW_MASK ^ 0xfffULL)
#define VTD_IRTA_ADDR_MASK(aw) (VTD_HAW_MASK(aw) ^ 0xfffULL)
#define VTD_IRTA_EIME (1ULL << 11)
#define VTD_IRTA_SIZE_MASK (0xfULL)
@ -197,9 +197,8 @@
#define VTD_DOMAIN_ID_SHIFT 16 /* 16-bit domain id for 64K domains */
#define VTD_DOMAIN_ID_MASK ((1UL << VTD_DOMAIN_ID_SHIFT) - 1)
#define VTD_CAP_ND (((VTD_DOMAIN_ID_SHIFT - 4) / 2) & 7ULL)
#define VTD_MGAW 39 /* Maximum Guest Address Width */
#define VTD_ADDRESS_SIZE (1ULL << VTD_MGAW)
#define VTD_CAP_MGAW (((VTD_MGAW - 1) & 0x3fULL) << 16)
#define VTD_ADDRESS_SIZE(aw) (1ULL << (aw))
#define VTD_CAP_MGAW(aw) ((((aw) - 1) & 0x3fULL) << 16)
#define VTD_MAMV 18ULL
#define VTD_CAP_MAMV (VTD_MAMV << 48)
#define VTD_CAP_PSI (1ULL << 39)
@ -213,13 +212,12 @@
#define VTD_CAP_SAGAW_39bit (0x2ULL << VTD_CAP_SAGAW_SHIFT)
/* 48-bit AGAW, 4-level page-table */
#define VTD_CAP_SAGAW_48bit (0x4ULL << VTD_CAP_SAGAW_SHIFT)
#define VTD_CAP_SAGAW VTD_CAP_SAGAW_39bit
/* IQT_REG */
#define VTD_IQT_QT(val) (((val) >> 4) & 0x7fffULL)
/* IQA_REG */
#define VTD_IQA_IQA_MASK (VTD_HAW_MASK ^ 0xfffULL)
#define VTD_IQA_IQA_MASK(aw) (VTD_HAW_MASK(aw) ^ 0xfffULL)
#define VTD_IQA_QS 0x7ULL
/* IQH_REG */
@ -252,7 +250,7 @@
#define VTD_FRCD_SID_MASK 0xffffULL
#define VTD_FRCD_SID(val) ((val) & VTD_FRCD_SID_MASK)
/* For the low 64-bit of 128-bit */
#define VTD_FRCD_FI(val) ((val) & (((1ULL << VTD_MGAW) - 1) ^ 0xfffULL))
#define VTD_FRCD_FI(val) ((val) & ~0xfffULL)
/* DMA Remapping Fault Conditions */
typedef enum VTDFaultReason {
@ -360,8 +358,7 @@ typedef union VTDInvDesc VTDInvDesc;
#define VTD_INV_DESC_IOTLB_DOMAIN (2ULL << 4)
#define VTD_INV_DESC_IOTLB_PAGE (3ULL << 4)
#define VTD_INV_DESC_IOTLB_DID(val) (((val) >> 16) & VTD_DOMAIN_ID_MASK)
#define VTD_INV_DESC_IOTLB_ADDR(val) ((val) & ~0xfffULL & \
((1ULL << VTD_MGAW) - 1))
#define VTD_INV_DESC_IOTLB_ADDR(val) ((val) & ~0xfffULL)
#define VTD_INV_DESC_IOTLB_AM(val) ((val) & 0x3fULL)
#define VTD_INV_DESC_IOTLB_RSVD_LO 0xffffffff0000ff00ULL
#define VTD_INV_DESC_IOTLB_RSVD_HI 0xf80ULL
@ -373,6 +370,24 @@ typedef union VTDInvDesc VTDInvDesc;
#define VTD_INV_DESC_DEVICE_IOTLB_RSVD_HI 0xffeULL
#define VTD_INV_DESC_DEVICE_IOTLB_RSVD_LO 0xffff0000ffe0fff8
/* Rsvd field masks for spte */
#define VTD_SPTE_PAGE_L1_RSVD_MASK(aw) \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_PAGE_L2_RSVD_MASK(aw) \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_PAGE_L3_RSVD_MASK(aw) \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_PAGE_L4_RSVD_MASK(aw) \
(0x880ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_LPAGE_L1_RSVD_MASK(aw) \
(0x800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_LPAGE_L2_RSVD_MASK(aw) \
(0x1ff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_LPAGE_L3_RSVD_MASK(aw) \
(0x3ffff800ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
#define VTD_SPTE_LPAGE_L4_RSVD_MASK(aw) \
(0x880ULL | ~(VTD_HAW_MASK(aw) | VTD_SL_IGN_COM))
/* Information about page-selective IOTLB invalidate */
struct VTDIOTLBPageInvInfo {
uint16_t domain_id;
@ -403,7 +418,7 @@ typedef struct VTDRootEntry VTDRootEntry;
#define VTD_ROOT_ENTRY_CTP (~0xfffULL)
#define VTD_ROOT_ENTRY_NR (VTD_PAGE_SIZE / sizeof(VTDRootEntry))
#define VTD_ROOT_ENTRY_RSVD (0xffeULL | ~VTD_HAW_MASK)
#define VTD_ROOT_ENTRY_RSVD(aw) (0xffeULL | ~VTD_HAW_MASK(aw))
/* Masks for struct VTDContextEntry */
/* lo */
@ -415,7 +430,7 @@ typedef struct VTDRootEntry VTDRootEntry;
#define VTD_CONTEXT_TT_PASS_THROUGH (2ULL << 2)
/* Second Level Page Translation Pointer*/
#define VTD_CONTEXT_ENTRY_SLPTPTR (~0xfffULL)
#define VTD_CONTEXT_ENTRY_RSVD_LO (0xff0ULL | ~VTD_HAW_MASK)
#define VTD_CONTEXT_ENTRY_RSVD_LO(aw) (0xff0ULL | ~VTD_HAW_MASK(aw))
/* hi */
#define VTD_CONTEXT_ENTRY_AW 7ULL /* Adjusted guest-address-width */
#define VTD_CONTEXT_ENTRY_DID(val) (((val) >> 8) & VTD_DOMAIN_ID_MASK)
@ -439,7 +454,7 @@ typedef struct VTDRootEntry VTDRootEntry;
#define VTD_SL_RW_MASK 3ULL
#define VTD_SL_R 1ULL
#define VTD_SL_W (1ULL << 1)
#define VTD_SL_PT_BASE_ADDR_MASK (~(VTD_PAGE_SIZE - 1) & VTD_HAW_MASK)
#define VTD_SL_PT_BASE_ADDR_MASK(aw) (~(VTD_PAGE_SIZE - 1) & VTD_HAW_MASK(aw))
#define VTD_SL_IGN_COM 0xbff0000000000000ULL
#endif

13
hw/i386/x86-iommu.c
View File

@ -21,6 +21,8 @@
#include "hw/sysbus.h"
#include "hw/boards.h"
#include "hw/i386/x86-iommu.h"
#include "hw/i386/pc.h"
#include "qapi/error.h"
#include "qemu/error-report.h"
#include "trace.h"
@ -80,7 +82,18 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp)
{
X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(dev);
X86IOMMUClass *x86_class = X86_IOMMU_GET_CLASS(dev);
MachineState *ms = MACHINE(qdev_get_machine());
MachineClass *mc = MACHINE_GET_CLASS(ms);
PCMachineState *pcms =
PC_MACHINE(object_dynamic_cast(OBJECT(ms), TYPE_PC_MACHINE));
QLIST_INIT(&x86_iommu->iec_notifiers);
if (!pcms || !pcms->bus) {
error_setg(errp, "Machine-type '%s' not supported by IOMMU",
mc->name);
return;
}
if (x86_class->realize) {
x86_class->realize(dev, errp);
}

7
hw/pci-bridge/gen_pcie_root_port.c
View File

@ -74,8 +74,13 @@ static void gen_rp_realize(DeviceState *dev, Error **errp)
PCIDevice *d = PCI_DEVICE(dev);
GenPCIERootPort *grp = GEN_PCIE_ROOT_PORT(d);
PCIERootPortClass *rpc = PCIE_ROOT_PORT_GET_CLASS(d);
Error *local_err = NULL;
rpc->parent_realize(dev, errp);
rpc->parent_realize(dev, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
int rc = pci_bridge_qemu_reserve_cap_init(d, 0, grp->bus_reserve,
grp->io_reserve, grp->mem_reserve, grp->pref32_reserve,

13
hw/pci/shpc.c
View File

@ -1,6 +1,7 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu-common.h"
#include "qemu/host-utils.h"
#include "qemu/range.h"
#include "qemu/error-report.h"
#include "hw/pci/shpc.h"
@ -122,16 +123,6 @@
#define SHPC_PCI_TO_IDX(pci_slot) ((pci_slot) - 1)
#define SHPC_IDX_TO_PHYSICAL(slot) ((slot) + 1)
static int roundup_pow_of_two(int x)
{
x |= (x >> 1);
x |= (x >> 2);
x |= (x >> 4);
x |= (x >> 8);
x |= (x >> 16);
return x + 1;
}
static uint16_t shpc_get_status(SHPCDevice *shpc, int slot, uint16_t msk)
{
uint8_t *status = shpc->config + SHPC_SLOT_STATUS(slot);
@ -656,7 +647,7 @@ int shpc_init(PCIDevice *d, PCIBus *sec_bus, MemoryRegion *bar,
int shpc_bar_size(PCIDevice *d)
{
return roundup_pow_of_two(SHPC_SLOT_REG(SHPC_MAX_SLOTS));
return pow2roundup32(SHPC_SLOT_REG(SHPC_MAX_SLOTS));
}
void shpc_cleanup(PCIDevice *d, MemoryRegion *bar)

318
hw/virtio/vhost-user.c
View File

@ -26,6 +26,11 @@
#define VHOST_MEMORY_MAX_NREGIONS 8
#define VHOST_USER_F_PROTOCOL_FEATURES 30
/*
* Maximum size of virtio device config space
*/
#define VHOST_USER_MAX_CONFIG_SIZE 256
enum VhostUserProtocolFeature {
VHOST_USER_PROTOCOL_F_MQ = 0,
VHOST_USER_PROTOCOL_F_LOG_SHMFD = 1,
@ -65,12 +70,15 @@ typedef enum VhostUserRequest {
VHOST_USER_SET_SLAVE_REQ_FD = 21,
VHOST_USER_IOTLB_MSG = 22,
VHOST_USER_SET_VRING_ENDIAN = 23,
VHOST_USER_GET_CONFIG = 24,
VHOST_USER_SET_CONFIG = 25,
VHOST_USER_MAX
} VhostUserRequest;
typedef enum VhostUserSlaveRequest {
VHOST_USER_SLAVE_NONE = 0,
VHOST_USER_SLAVE_IOTLB_MSG = 1,
VHOST_USER_SLAVE_CONFIG_CHANGE_MSG = 2,
VHOST_USER_SLAVE_MAX
} VhostUserSlaveRequest;
@ -92,7 +100,19 @@ typedef struct VhostUserLog {
uint64_t mmap_offset;
} VhostUserLog;
typedef struct VhostUserMsg {
typedef struct VhostUserConfig {
uint32_t offset;
uint32_t size;
uint32_t flags;
uint8_t region[VHOST_USER_MAX_CONFIG_SIZE];
} VhostUserConfig;
static VhostUserConfig c __attribute__ ((unused));
#define VHOST_USER_CONFIG_HDR_SIZE (sizeof(c.offset) \
+ sizeof(c.size) \
+ sizeof(c.flags))
typedef struct {
VhostUserRequest request;
#define VHOST_USER_VERSION_MASK (0x3)
@ -100,7 +120,9 @@ typedef struct VhostUserMsg {
#define VHOST_USER_NEED_REPLY_MASK (0x1 << 3)
uint32_t flags;
uint32_t size; /* the following payload size */
union {
} QEMU_PACKED VhostUserHeader;
typedef union {
#define VHOST_USER_VRING_IDX_MASK (0xff)
#define VHOST_USER_VRING_NOFD_MASK (0x1<<8)
uint64_t u64;
@ -109,15 +131,18 @@ typedef struct VhostUserMsg {
VhostUserMemory memory;
VhostUserLog log;
struct vhost_iotlb_msg iotlb;
} payload;
VhostUserConfig config;
} VhostUserPayload;
typedef struct VhostUserMsg {
VhostUserHeader hdr;
VhostUserPayload payload;
} QEMU_PACKED VhostUserMsg;
static VhostUserMsg m __attribute__ ((unused));
#define VHOST_USER_HDR_SIZE (sizeof(m.request) \
+ sizeof(m.flags) \
+ sizeof(m.size))
#define VHOST_USER_HDR_SIZE (sizeof(VhostUserHeader))
#define VHOST_USER_PAYLOAD_SIZE (sizeof(m) - VHOST_USER_HDR_SIZE)
#define VHOST_USER_PAYLOAD_SIZE (sizeof(VhostUserPayload))
/* The version of the protocol we support */
#define VHOST_USER_VERSION (0x1)
@ -142,33 +167,33 @@ static int vhost_user_read(struct vhost_dev *dev, VhostUserMsg *msg)
r = qemu_chr_fe_read_all(chr, p, size);
if (r != size) {
error_report("Failed to read msg header. Read %d instead of %d."
" Original request %d.", r, size, msg->request);
" Original request %d.", r, size, msg->hdr.request);
goto fail;
}
/* validate received flags */
if (msg->flags != (VHOST_USER_REPLY_MASK | VHOST_USER_VERSION)) {
if (msg->hdr.flags != (VHOST_USER_REPLY_MASK | VHOST_USER_VERSION)) {
error_report("Failed to read msg header."
" Flags 0x%x instead of 0x%x.", msg->flags,
" Flags 0x%x instead of 0x%x.", msg->hdr.flags,
VHOST_USER_REPLY_MASK | VHOST_USER_VERSION);
goto fail;
}
/* validate message size is sane */
if (msg->size > VHOST_USER_PAYLOAD_SIZE) {
if (msg->hdr.size > VHOST_USER_PAYLOAD_SIZE) {
error_report("Failed to read msg header."
" Size %d exceeds the maximum %zu.", msg->size,
" Size %d exceeds the maximum %zu.", msg->hdr.size,
VHOST_USER_PAYLOAD_SIZE);
goto fail;
}
if (msg->size) {
if (msg->hdr.size) {
p += VHOST_USER_HDR_SIZE;
size = msg->size;
size = msg->hdr.size;
r = qemu_chr_fe_read_all(chr, p, size);
if (r != size) {
error_report("Failed to read msg payload."
" Read %d instead of %d.", r, msg->size);
" Read %d instead of %d.", r, msg->hdr.size);
goto fail;
}
}
@ -184,7 +209,7 @@ static int process_message_reply(struct vhost_dev *dev,
{
VhostUserMsg msg_reply;
if ((msg->flags & VHOST_USER_NEED_REPLY_MASK) == 0) {
if ((msg->hdr.flags & VHOST_USER_NEED_REPLY_MASK) == 0) {
return 0;
}
@ -192,10 +217,10 @@ static int process_message_reply(struct vhost_dev *dev,
return -1;
}
if (msg_reply.request != msg->request) {
if (msg_reply.hdr.request != msg->hdr.request) {
error_report("Received unexpected msg type."
"Expected %d received %d",
msg->request, msg_reply.request);
msg->hdr.request, msg_reply.hdr.request);
return -1;
}
@ -222,15 +247,15 @@ static int vhost_user_write(struct vhost_dev *dev, VhostUserMsg *msg,
{
struct vhost_user *u = dev->opaque;
CharBackend *chr = u->chr;
int ret, size = VHOST_USER_HDR_SIZE + msg->size;
int ret, size = VHOST_USER_HDR_SIZE + msg->hdr.size;
/*
* For non-vring specific requests, like VHOST_USER_SET_MEM_TABLE,
* we just need send it once in the first time. For later such
* request, we just ignore it.
*/
if (vhost_user_one_time_request(msg->request) && dev->vq_index != 0) {
msg->flags &= ~VHOST_USER_NEED_REPLY_MASK;
if (vhost_user_one_time_request(msg->hdr.request) && dev->vq_index != 0) {
msg->hdr.flags &= ~VHOST_USER_NEED_REPLY_MASK;
return 0;
}
@ -257,11 +282,11 @@ static int vhost_user_set_log_base(struct vhost_dev *dev, uint64_t base,
bool shmfd = virtio_has_feature(dev->protocol_features,
VHOST_USER_PROTOCOL_F_LOG_SHMFD);
VhostUserMsg msg = {
.request = VHOST_USER_SET_LOG_BASE,
.flags = VHOST_USER_VERSION,
.hdr.request = VHOST_USER_SET_LOG_BASE,
.hdr.flags = VHOST_USER_VERSION,
.payload.log.mmap_size = log->size * sizeof(*(log->log)),
.payload.log.mmap_offset = 0,
.size = sizeof(msg.payload.log),
.hdr.size = sizeof(msg.payload.log),
};
if (shmfd && log->fd != -1) {
@ -273,15 +298,15 @@ static int vhost_user_set_log_base(struct vhost_dev *dev, uint64_t base,
}
if (shmfd) {
msg.size = 0;
msg.hdr.size = 0;
if (vhost_user_read(dev, &msg) < 0) {
return -1;
}
if (msg.request != VHOST_USER_SET_LOG_BASE) {
if (msg.hdr.request != VHOST_USER_SET_LOG_BASE) {
error_report("Received unexpected msg type. "
"Expected %d received %d",
VHOST_USER_SET_LOG_BASE, msg.request);
VHOST_USER_SET_LOG_BASE, msg.hdr.request);
return -1;
}
}
@ -299,12 +324,12 @@ static int vhost_user_set_mem_table(struct vhost_dev *dev,
VHOST_USER_PROTOCOL_F_REPLY_ACK);
VhostUserMsg msg = {
.request = VHOST_USER_SET_MEM_TABLE,
.flags = VHOST_USER_VERSION,
.hdr.request = VHOST_USER_SET_MEM_TABLE,
.hdr.flags = VHOST_USER_VERSION,
};
if (reply_supported) {
msg.flags |= VHOST_USER_NEED_REPLY_MASK;
msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK;
}
for (i = 0; i < dev->mem->nregions; ++i) {
@ -317,11 +342,14 @@ static int vhost_user_set_mem_table(struct vhost_dev *dev,
&offset);
fd = memory_region_get_fd(mr);
if (fd > 0) {
if (fd_num == VHOST_MEMORY_MAX_NREGIONS) {
error_report("Failed preparing vhost-user memory table msg");
return -1;
}
msg.payload.memory.regions[fd_num].userspace_addr = reg->userspace_addr;
msg.payload.memory.regions[fd_num].memory_size = reg->memory_size;
msg.payload.memory.regions[fd_num].guest_phys_addr = reg->guest_phys_addr;
msg.payload.memory.regions[fd_num].mmap_offset = offset;
assert(fd_num < VHOST_MEMORY_MAX_NREGIONS);
fds[fd_num++] = fd;
}
}
@ -334,9 +362,9 @@ static int vhost_user_set_mem_table(struct vhost_dev *dev,
return -1;
}
msg.size = sizeof(msg.payload.memory.nregions);
msg.size += sizeof(msg.payload.memory.padding);
msg.size += fd_num * sizeof(VhostUserMemoryRegion);
msg.hdr.size = sizeof(msg.payload.memory.nregions);
msg.hdr.size += sizeof(msg.payload.memory.padding);
msg.hdr.size += fd_num * sizeof(VhostUserMemoryRegion);
if (vhost_user_write(dev, &msg, fds, fd_num) < 0) {
return -1;
@ -353,10 +381,10 @@ static int vhost_user_set_vring_addr(struct vhost_dev *dev,
struct vhost_vring_addr *addr)
{
VhostUserMsg msg = {
.request = VHOST_USER_SET_VRING_ADDR,
.flags = VHOST_USER_VERSION,
.hdr.request = VHOST_USER_SET_VRING_ADDR,
.hdr.flags = VHOST_USER_VERSION,
.payload.addr = *addr,
.size = sizeof(msg.payload.addr),
.hdr.size = sizeof(msg.payload.addr),
};
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
@ -372,10 +400,10 @@ static int vhost_user_set_vring_endian(struct vhost_dev *dev,
bool cross_endian = virtio_has_feature(dev->protocol_features,
VHOST_USER_PROTOCOL_F_CROSS_ENDIAN);
VhostUserMsg msg = {
.request = VHOST_USER_SET_VRING_ENDIAN,
.flags = VHOST_USER_VERSION,
.hdr.request = VHOST_USER_SET_VRING_ENDIAN,
.hdr.flags = VHOST_USER_VERSION,
.payload.state = *ring,
.size = sizeof(msg.payload.state),
.hdr.size = sizeof(msg.payload.state),
};
if (!cross_endian) {
@ -395,10 +423,10 @@ static int vhost_set_vring(struct vhost_dev *dev,
struct vhost_vring_state *ring)
{
VhostUserMsg msg = {
.request = request,
.flags = VHOST_USER_VERSION,
.hdr.request = request,
.hdr.flags = VHOST_USER_VERSION,
.payload.state = *ring,
.size = sizeof(msg.payload.state),
.hdr.size = sizeof(msg.payload.state),
};
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
@ -444,10 +472,10 @@ static int vhost_user_get_vring_base(struct vhost_dev *dev,
struct vhost_vring_state *ring)
{
VhostUserMsg msg = {
.request = VHOST_USER_GET_VRING_BASE,
.flags = VHOST_USER_VERSION,
.hdr.request = VHOST_USER_GET_VRING_BASE,
.hdr.flags = VHOST_USER_VERSION,
.payload.state = *ring,
.size = sizeof(msg.payload.state),
.hdr.size = sizeof(msg.payload.state),
};
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
@ -458,13 +486,13 @@ static int vhost_user_get_vring_base(struct vhost_dev *dev,
return -1;
}
if (msg.request != VHOST_USER_GET_VRING_BASE) {
if (msg.hdr.request != VHOST_USER_GET_VRING_BASE) {
error_report("Received unexpected msg type. Expected %d received %d",
VHOST_USER_GET_VRING_BASE, msg.request);
VHOST_USER_GET_VRING_BASE, msg.hdr.request);
return -1;
}
if (msg.size != sizeof(msg.payload.state)) {
if (msg.hdr.size != sizeof(msg.payload.state)) {
error_report("Received bad msg size.");
return -1;
}
@ -481,10 +509,10 @@ static int vhost_set_vring_file(struct vhost_dev *dev,
int fds[VHOST_MEMORY_MAX_NREGIONS];
size_t fd_num = 0;
VhostUserMsg msg = {
.request = request,
.flags = VHOST_USER_VERSION,
.hdr.request = request,
.hdr.flags = VHOST_USER_VERSION,
.payload.u64 = file->index & VHOST_USER_VRING_IDX_MASK,
.size = sizeof(msg.payload.u64),
.hdr.size = sizeof(msg.payload.u64),
};
if (ioeventfd_enabled() && file->fd > 0) {
@ -515,10 +543,10 @@ static int vhost_user_set_vring_call(struct vhost_dev *dev,
static int vhost_user_set_u64(struct vhost_dev *dev, int request, uint64_t u64)
{
VhostUserMsg msg = {
.request = request,
.flags = VHOST_USER_VERSION,
.hdr.request = request,
.hdr.flags = VHOST_USER_VERSION,
.payload.u64 = u64,
.size = sizeof(msg.payload.u64),
.hdr.size = sizeof(msg.payload.u64),
};
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
@ -543,8 +571,8 @@ static int vhost_user_set_protocol_features(struct vhost_dev *dev,
static int vhost_user_get_u64(struct vhost_dev *dev, int request, uint64_t *u64)
{
VhostUserMsg msg = {
.request = request,
.flags = VHOST_USER_VERSION,
.hdr.request = request,
.hdr.flags = VHOST_USER_VERSION,
};
if (vhost_user_one_time_request(request) && dev->vq_index != 0) {
@ -559,13 +587,13 @@ static int vhost_user_get_u64(struct vhost_dev *dev, int request, uint64_t *u64)
return -1;
}
if (msg.request != request) {
if (msg.hdr.request != request) {
error_report("Received unexpected msg type. Expected %d received %d",
request, msg.request);
request, msg.hdr.request);
return -1;
}
if (msg.size != sizeof(msg.payload.u64)) {
if (msg.hdr.size != sizeof(msg.payload.u64)) {
error_report("Received bad msg size.");
return -1;
}
@ -583,8 +611,8 @@ static int vhost_user_get_features(struct vhost_dev *dev, uint64_t *features)
static int vhost_user_set_owner(struct vhost_dev *dev)
{
VhostUserMsg msg = {
.request = VHOST_USER_SET_OWNER,
.flags = VHOST_USER_VERSION,
.hdr.request = VHOST_USER_SET_OWNER,
.hdr.flags = VHOST_USER_VERSION,
};
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
@ -597,8 +625,8 @@ static int vhost_user_set_owner(struct vhost_dev *dev)
static int vhost_user_reset_device(struct vhost_dev *dev)
{
VhostUserMsg msg = {
.request = VHOST_USER_RESET_OWNER,
.flags = VHOST_USER_VERSION,
.hdr.request = VHOST_USER_RESET_OWNER,
.hdr.flags = VHOST_USER_VERSION,
};
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
@ -608,37 +636,56 @@ static int vhost_user_reset_device(struct vhost_dev *dev)
return 0;
}
static int vhost_user_slave_handle_config_change(struct vhost_dev *dev)
{
int ret = -1;
if (!dev->config_ops) {
return -1;
}
if (dev->config_ops->vhost_dev_config_notifier) {
ret = dev->config_ops->vhost_dev_config_notifier(dev);
}
return ret;
}
static void slave_read(void *opaque)
{
struct vhost_dev *dev = opaque;
struct vhost_user *u = dev->opaque;
VhostUserMsg msg = { 0, };
VhostUserHeader hdr = { 0, };
VhostUserPayload payload = { 0, };
int size, ret = 0;
/* Read header */
size = read(u->slave_fd, &msg, VHOST_USER_HDR_SIZE);
size = read(u->slave_fd, &hdr, VHOST_USER_HDR_SIZE);
if (size != VHOST_USER_HDR_SIZE) {
error_report("Failed to read from slave.");
goto err;
}
if (msg.size > VHOST_USER_PAYLOAD_SIZE) {
if (hdr.size > VHOST_USER_PAYLOAD_SIZE) {
error_report("Failed to read msg header."
" Size %d exceeds the maximum %zu.", msg.size,
" Size %d exceeds the maximum %zu.", hdr.size,
VHOST_USER_PAYLOAD_SIZE);
goto err;
}
/* Read payload */
size = read(u->slave_fd, &msg.payload, msg.size);
if (size != msg.size) {
size = read(u->slave_fd, &payload, hdr.size);
if (size != hdr.size) {
error_report("Failed to read payload from slave.");
goto err;
}
switch (msg.request) {
switch (hdr.request) {
case VHOST_USER_SLAVE_IOTLB_MSG:
ret = vhost_backend_handle_iotlb_msg(dev, &msg.payload.iotlb);
ret = vhost_backend_handle_iotlb_msg(dev, &payload.iotlb);
break;
case VHOST_USER_SLAVE_CONFIG_CHANGE_MSG :
ret = vhost_user_slave_handle_config_change(dev);
break;
default:
error_report("Received unexpected msg type.");
@ -649,15 +696,23 @@ static void slave_read(void *opaque)
* REPLY_ACK feature handling. Other reply types has to be managed
* directly in their request handlers.
*/
if (msg.flags & VHOST_USER_NEED_REPLY_MASK) {
msg.flags &= ~VHOST_USER_NEED_REPLY_MASK;
msg.flags |= VHOST_USER_REPLY_MASK;
if (hdr.flags & VHOST_USER_NEED_REPLY_MASK) {
struct iovec iovec[2];
msg.payload.u64 = !!ret;
msg.size = sizeof(msg.payload.u64);
size = write(u->slave_fd, &msg, VHOST_USER_HDR_SIZE + msg.size);
if (size != VHOST_USER_HDR_SIZE + msg.size) {
hdr.flags &= ~VHOST_USER_NEED_REPLY_MASK;
hdr.flags |= VHOST_USER_REPLY_MASK;
payload.u64 = !!ret;
hdr.size = sizeof(payload.u64);
iovec[0].iov_base = &hdr;
iovec[0].iov_len = VHOST_USER_HDR_SIZE;
iovec[1].iov_base = &payload;
iovec[1].iov_len = hdr.size;
size = writev(u->slave_fd, iovec, ARRAY_SIZE(iovec));
if (size != VHOST_USER_HDR_SIZE + hdr.size) {
error_report("Failed to send msg reply to slave.");
goto err;
}
@ -675,8 +730,8 @@ err:
static int vhost_setup_slave_channel(struct vhost_dev *dev)
{
VhostUserMsg msg = {
.request = VHOST_USER_SET_SLAVE_REQ_FD,
.flags = VHOST_USER_VERSION,
.hdr.request = VHOST_USER_SET_SLAVE_REQ_FD,
.hdr.flags = VHOST_USER_VERSION,
};
struct vhost_user *u = dev->opaque;
int sv[2], ret = 0;
@ -697,7 +752,7 @@ static int vhost_setup_slave_channel(struct vhost_dev *dev)
qemu_set_fd_handler(u->slave_fd, slave_read, NULL, dev);
if (reply_supported) {
msg.flags |= VHOST_USER_NEED_REPLY_MASK;
msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK;
}
ret = vhost_user_write(dev, &msg, &sv[1], 1);
@ -842,10 +897,10 @@ static int vhost_user_migration_done(struct vhost_dev *dev, char* mac_addr)
/* if backend supports VHOST_USER_PROTOCOL_F_RARP ask it to send the RARP */
if (virtio_has_feature(dev->protocol_features,
VHOST_USER_PROTOCOL_F_RARP)) {
msg.request = VHOST_USER_SEND_RARP;
msg.flags = VHOST_USER_VERSION;
msg.hdr.request = VHOST_USER_SEND_RARP;
msg.hdr.flags = VHOST_USER_VERSION;
memcpy((char *)&msg.payload.u64, mac_addr, 6);
msg.size = sizeof(msg.payload.u64);
msg.hdr.size = sizeof(msg.payload.u64);
return vhost_user_write(dev, &msg, NULL, 0);
}
@ -879,12 +934,12 @@ static int vhost_user_net_set_mtu(struct vhost_dev *dev, uint16_t mtu)
return 0;
}
msg.request = VHOST_USER_NET_SET_MTU;
msg.hdr.request = VHOST_USER_NET_SET_MTU;
msg.payload.u64 = mtu;
msg.size = sizeof(msg.payload.u64);
msg.flags = VHOST_USER_VERSION;
msg.hdr.size = sizeof(msg.payload.u64);
msg.hdr.flags = VHOST_USER_VERSION;
if (reply_supported) {
msg.flags |= VHOST_USER_NEED_REPLY_MASK;
msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK;
}
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
@ -903,9 +958,9 @@ static int vhost_user_send_device_iotlb_msg(struct vhost_dev *dev,
struct vhost_iotlb_msg *imsg)
{
VhostUserMsg msg = {
.request = VHOST_USER_IOTLB_MSG,
.size = sizeof(msg.payload.iotlb),
.flags = VHOST_USER_VERSION | VHOST_USER_NEED_REPLY_MASK,
.hdr.request = VHOST_USER_IOTLB_MSG,
.hdr.size = sizeof(msg.payload.iotlb),
.hdr.flags = VHOST_USER_VERSION | VHOST_USER_NEED_REPLY_MASK,
.payload.iotlb = *imsg,
};
@ -922,6 +977,83 @@ static void vhost_user_set_iotlb_callback(struct vhost_dev *dev, int enabled)
/* No-op as the receive channel is not dedicated to IOTLB messages. */
}
static int vhost_user_get_config(struct vhost_dev *dev, uint8_t *config,
uint32_t config_len)
{
VhostUserMsg msg = {
.hdr.request = VHOST_USER_GET_CONFIG,
.hdr.flags = VHOST_USER_VERSION,
.hdr.size = VHOST_USER_CONFIG_HDR_SIZE + config_len,
};
if (config_len > VHOST_USER_MAX_CONFIG_SIZE) {
return -1;
}
msg.payload.config.offset = 0;
msg.payload.config.size = config_len;
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
return -1;
}
if (vhost_user_read(dev, &msg) < 0) {
return -1;
}
if (msg.hdr.request != VHOST_USER_GET_CONFIG) {
error_report("Received unexpected msg type. Expected %d received %d",
VHOST_USER_GET_CONFIG, msg.hdr.request);
return -1;
}
if (msg.hdr.size != VHOST_USER_CONFIG_HDR_SIZE + config_len) {
error_report("Received bad msg size.");
return -1;
}
memcpy(config, msg.payload.config.region, config_len);
return 0;
}
static int vhost_user_set_config(struct vhost_dev *dev, const uint8_t *data,
uint32_t offset, uint32_t size, uint32_t flags)
{
uint8_t *p;
bool reply_supported = virtio_has_feature(dev->protocol_features,
VHOST_USER_PROTOCOL_F_REPLY_ACK);
VhostUserMsg msg = {
.hdr.request = VHOST_USER_SET_CONFIG,
.hdr.flags = VHOST_USER_VERSION,
.hdr.size = VHOST_USER_CONFIG_HDR_SIZE + size,
};
if (reply_supported) {
msg.hdr.flags |= VHOST_USER_NEED_REPLY_MASK;
}
if (size > VHOST_USER_MAX_CONFIG_SIZE) {
return -1;
}
msg.payload.config.offset = offset,
msg.payload.config.size = size,
msg.payload.config.flags = flags,
p = msg.payload.config.region;
memcpy(p, data, size);
if (vhost_user_write(dev, &msg, NULL, 0) < 0) {
return -1;
}
if (reply_supported) {
return process_message_reply(dev, &msg);
}
return 0;
}
const VhostOps user_ops = {
.backend_type = VHOST_BACKEND_TYPE_USER,
.vhost_backend_init = vhost_user_init,
@ -948,4 +1080,6 @@ const VhostOps user_ops = {
.vhost_net_set_mtu = vhost_user_net_set_mtu,
.vhost_set_iotlb_callback = vhost_user_set_iotlb_callback,
.vhost_send_device_iotlb_msg = vhost_user_send_device_iotlb_msg,
.vhost_get_config = vhost_user_get_config,
.vhost_set_config = vhost_user_set_config,
};

32
hw/virtio/vhost.c
View File

@ -1505,6 +1505,38 @@ void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,
}
}
int vhost_dev_get_config(struct vhost_dev *hdev, uint8_t *config,
uint32_t config_len)
{
assert(hdev->vhost_ops);
if (hdev->vhost_ops->vhost_get_config) {
return hdev->vhost_ops->vhost_get_config(hdev, config, config_len);
}
return -1;
}
int vhost_dev_set_config(struct vhost_dev *hdev, const uint8_t *data,
uint32_t offset, uint32_t size, uint32_t flags)
{
assert(hdev->vhost_ops);
if (hdev->vhost_ops->vhost_set_config) {
return hdev->vhost_ops->vhost_set_config(hdev, data, offset,
size, flags);
}
return -1;
}
void vhost_dev_set_config_notifier(struct vhost_dev *hdev,
const VhostDevConfigOps *ops)
{
assert(hdev->vhost_ops);
hdev->config_ops = ops;
}
/* Host notifiers must be enabled at this point. */
int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev)
{

19
hw/virtio/virtio-bus.c
View File

@ -256,6 +256,15 @@ bool virtio_bus_ioeventfd_enabled(VirtioBusState *bus)
return k->ioeventfd_assign && k->ioeventfd_enabled(proxy);
}
static void virtio_bus_cleanup_event_notifier(EventNotifier *notifier)
{
/* Test and clear notifier after disabling event,
* in case poll callback didn't have time to run.
*/
virtio_queue_host_notifier_read(notifier);
event_notifier_cleanup(notifier);
}
/*
* This function switches ioeventfd on/off in the device.
* The caller must set or clear the handlers for the EventNotifier.
@ -283,19 +292,13 @@ int virtio_bus_set_host_notifier(VirtioBusState *bus, int n, bool assign)
r = k->ioeventfd_assign(proxy, notifier, n, true);
if (r < 0) {
error_report("%s: unable to assign ioeventfd: %d", __func__, r);
goto cleanup_event_notifier;
virtio_bus_cleanup_event_notifier(notifier);
}
return 0;
} else {
notifier->cleanup = virtio_bus_cleanup_event_notifier;
k->ioeventfd_assign(proxy, notifier, n, false);
}
cleanup_event_notifier:
/* Test and clear notifier after disabling event,
* in case poll callback didn't have time to run.
*/
virtio_queue_host_notifier_read(notifier);
event_notifier_cleanup(notifier);
return r;
}

55
hw/virtio/virtio-pci.c
View File

@ -1978,6 +1978,58 @@ static const TypeInfo virtio_blk_pci_info = {
.class_init = virtio_blk_pci_class_init,
};
#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
/* vhost-user-blk */
static Property vhost_user_blk_pci_properties[] = {
DEFINE_PROP_UINT32("class", VirtIOPCIProxy, class_code, 0),
DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
DEFINE_PROP_END_OF_LIST(),
};
static void vhost_user_blk_pci_realize(VirtIOPCIProxy *vpci_dev, Error **errp)
{
VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(vpci_dev);
DeviceState *vdev = DEVICE(&dev->vdev);
qdev_set_parent_bus(vdev, BUS(&vpci_dev->bus));
object_property_set_bool(OBJECT(vdev), true, "realized", errp);
}
static void vhost_user_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);
set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
dc->props = vhost_user_blk_pci_properties;
k->realize = vhost_user_blk_pci_realize;
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 vhost_user_blk_pci_instance_init(Object *obj)
{
VHostUserBlkPCI *dev = VHOST_USER_BLK_PCI(obj);
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_USER_BLK);
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
"bootindex", &error_abort);
}
static const TypeInfo vhost_user_blk_pci_info = {
.name = TYPE_VHOST_USER_BLK_PCI,
.parent = TYPE_VIRTIO_PCI,
.instance_size = sizeof(VHostUserBlkPCI),
.instance_init = vhost_user_blk_pci_instance_init,
.class_init = vhost_user_blk_pci_class_init,
};
#endif
/* virtio-scsi-pci */
static Property virtio_scsi_pci_properties[] = {
@ -2624,6 +2676,9 @@ static void virtio_pci_register_types(void)
type_register_static(&virtio_9p_pci_info);
#endif
type_register_static(&virtio_blk_pci_info);
#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
type_register_static(&vhost_user_blk_pci_info);
#endif
type_register_static(&virtio_scsi_pci_info);
type_register_static(&virtio_balloon_pci_info);
type_register_static(&virtio_serial_pci_info);

18
hw/virtio/virtio-pci.h
View File

@ -27,6 +27,9 @@
#include "hw/virtio/virtio-gpu.h"
#include "hw/virtio/virtio-crypto.h"
#include "hw/virtio/vhost-user-scsi.h"
#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
#include "hw/virtio/vhost-user-blk.h"
#endif
#ifdef CONFIG_VIRTFS
#include "hw/9pfs/virtio-9p.h"
@ -46,6 +49,7 @@ typedef struct VirtIOSerialPCI VirtIOSerialPCI;
typedef struct VirtIONetPCI VirtIONetPCI;
typedef struct VHostSCSIPCI VHostSCSIPCI;
typedef struct VHostUserSCSIPCI VHostUserSCSIPCI;
typedef struct VHostUserBlkPCI VHostUserBlkPCI;
typedef struct VirtIORngPCI VirtIORngPCI;
typedef struct VirtIOInputPCI VirtIOInputPCI;
typedef struct VirtIOInputHIDPCI VirtIOInputHIDPCI;
@ -244,6 +248,20 @@ struct VHostUserSCSIPCI {
VHostUserSCSI vdev;
};
#if defined(CONFIG_VHOST_USER) && defined(CONFIG_LINUX)
/*
* vhost-user-blk-pci: This extends VirtioPCIProxy.
*/
#define TYPE_VHOST_USER_BLK_PCI "vhost-user-blk-pci"
#define VHOST_USER_BLK_PCI(obj) \
OBJECT_CHECK(VHostUserBlkPCI, (obj), TYPE_VHOST_USER_BLK_PCI)
struct VHostUserBlkPCI {
VirtIOPCIProxy parent_obj;
VHostUserBlk vdev;
};
#endif
/*
* virtio-blk-pci: This extends VirtioPCIProxy.
*/

5
hw/virtio/virtio.c
View File

@ -2574,6 +2574,7 @@ static int virtio_device_start_ioeventfd_impl(VirtIODevice *vdev)
VirtioBusState *qbus = VIRTIO_BUS(qdev_get_parent_bus(DEVICE(vdev)));
int n, r, err;
memory_region_transaction_begin();
for (n = 0; n < VIRTIO_QUEUE_MAX; n++) {
VirtQueue *vq = &vdev->vq[n];
if (!virtio_queue_get_num(vdev, n)) {
@ -2596,6 +2597,7 @@ static int virtio_device_start_ioeventfd_impl(VirtIODevice *vdev)
}
event_notifier_set(&vq->host_notifier);
}
memory_region_transaction_commit();
return 0;
assign_error:
@ -2609,6 +2611,7 @@ assign_error:
r = virtio_bus_set_host_notifier(qbus, n, false);
assert(r >= 0);
}
memory_region_transaction_commit();
return err;
}
@ -2625,6 +2628,7 @@ static void virtio_device_stop_ioeventfd_impl(VirtIODevice *vdev)
VirtioBusState *qbus = VIRTIO_BUS(qdev_get_parent_bus(DEVICE(vdev)));
int n, r;
memory_region_transaction_begin();
for (n = 0; n < VIRTIO_QUEUE_MAX; n++) {
VirtQueue *vq = &vdev->vq[n];
@ -2635,6 +2639,7 @@ static void virtio_device_stop_ioeventfd_impl(VirtIODevice *vdev)
r = virtio_bus_set_host_notifier(qbus, n, false);
assert(r >= 0);
}
memory_region_transaction_commit();
}
void virtio_device_stop_ioeventfd(VirtIODevice *vdev)

7
include/hw/i386/intel_iommu.h
View File

@ -46,8 +46,10 @@
#define VTD_SID_TO_DEVFN(sid) ((sid) & 0xff)
#define DMAR_REG_SIZE 0x230
#define VTD_HOST_ADDRESS_WIDTH 39
#define VTD_HAW_MASK ((1ULL << VTD_HOST_ADDRESS_WIDTH) - 1)
#define VTD_HOST_AW_39BIT 39
#define VTD_HOST_AW_48BIT 48
#define VTD_HOST_ADDRESS_WIDTH VTD_HOST_AW_39BIT
#define VTD_HAW_MASK(aw) ((1ULL << (aw)) - 1)
#define DMAR_REPORT_F_INTR (1)
@ -302,6 +304,7 @@ struct IntelIOMMUState {
bool intr_eime; /* Extended interrupt mode enabled */
OnOffAuto intr_eim; /* Toggle for EIM cabability */
bool buggy_eim; /* Force buggy EIM unless eim=off */
uint8_t aw_bits; /* Host/IOVA address width (in bits) */
};
/* Find the VTD Address space associated with the given bus pointer,

12
include/hw/virtio/vhost-backend.h
View File

@ -20,6 +20,11 @@ typedef enum VhostBackendType {
VHOST_BACKEND_TYPE_MAX = 3,
} VhostBackendType;
typedef enum VhostSetConfigType {
VHOST_SET_CONFIG_TYPE_MASTER = 0,
VHOST_SET_CONFIG_TYPE_MIGRATION = 1,
} VhostSetConfigType;
struct vhost_dev;
struct vhost_log;
struct vhost_memory;
@ -84,6 +89,11 @@ typedef void (*vhost_set_iotlb_callback_op)(struct vhost_dev *dev,
int enabled);
typedef int (*vhost_send_device_iotlb_msg_op)(struct vhost_dev *dev,
struct vhost_iotlb_msg *imsg);
typedef int (*vhost_set_config_op)(struct vhost_dev *dev, const uint8_t *data,
uint32_t offset, uint32_t size,
uint32_t flags);
typedef int (*vhost_get_config_op)(struct vhost_dev *dev, uint8_t *config,
uint32_t config_len);
typedef struct VhostOps {
VhostBackendType backend_type;
@ -118,6 +128,8 @@ typedef struct VhostOps {
vhost_vsock_set_running_op vhost_vsock_set_running;
vhost_set_iotlb_callback_op vhost_set_iotlb_callback;
vhost_send_device_iotlb_msg_op vhost_send_device_iotlb_msg;
vhost_get_config_op vhost_get_config;
vhost_set_config_op vhost_set_config;
} VhostOps;
extern const VhostOps user_ops;

41
include/hw/virtio/vhost-user-blk.h Normal file
View File

@ -0,0 +1,41 @@
/*
* vhost-user-blk host device
* Copyright(C) 2017 Intel Corporation.
*
* Authors:
* Changpeng Liu <changpeng.liu@intel.com>
*
* Based on vhost-scsi.h, Copyright IBM, Corp. 2011
*
* This work is licensed under the terms of the GNU LGPL, version 2 or later.
* See the COPYING.LIB file in the top-level directory.
*
*/
#ifndef VHOST_USER_BLK_H
#define VHOST_USER_BLK_H
#include "standard-headers/linux/virtio_blk.h"
#include "qemu-common.h"
#include "hw/qdev.h"
#include "hw/block/block.h"
#include "chardev/char-fe.h"
#include "hw/virtio/vhost.h"
#define TYPE_VHOST_USER_BLK "vhost-user-blk"
#define VHOST_USER_BLK(obj) \
OBJECT_CHECK(VHostUserBlk, (obj), TYPE_VHOST_USER_BLK)
typedef struct VHostUserBlk {
VirtIODevice parent_obj;
CharBackend chardev;
int32_t bootindex;
struct virtio_blk_config blkcfg;
uint16_t num_queues;
uint32_t queue_size;
uint32_t config_wce;
uint32_t config_ro;
struct vhost_dev dev;
} VHostUserBlk;
#endif

15
include/hw/virtio/vhost.h
View File

@ -46,6 +46,12 @@ struct vhost_iommu {
QLIST_ENTRY(vhost_iommu) iommu_next;
};
typedef struct VhostDevConfigOps {
/* Vhost device config space changed callback
*/
int (*vhost_dev_config_notifier)(struct vhost_dev *dev);
} VhostDevConfigOps;
struct vhost_memory;
struct vhost_dev {
VirtIODevice *vdev;
@ -76,6 +82,7 @@ struct vhost_dev {
QLIST_ENTRY(vhost_dev) entry;
QLIST_HEAD(, vhost_iommu) iommu_list;
IOMMUNotifier n;
const VhostDevConfigOps *config_ops;
};
int vhost_dev_init(struct vhost_dev *hdev, void *opaque,
@ -106,4 +113,12 @@ int vhost_net_set_backend(struct vhost_dev *hdev,
struct vhost_vring_file *file);
int vhost_device_iotlb_miss(struct vhost_dev *dev, uint64_t iova, int write);
int vhost_dev_get_config(struct vhost_dev *dev, uint8_t *config,
uint32_t config_len);
int vhost_dev_set_config(struct vhost_dev *dev, const uint8_t *data,
uint32_t offset, uint32_t size, uint32_t flags);
/* notifier callback in case vhost device config space changed
*/
void vhost_dev_set_config_notifier(struct vhost_dev *dev,
const VhostDevConfigOps *ops);
#endif

1
include/qemu/event_notifier.h
View File

@ -26,6 +26,7 @@ struct EventNotifier {
int rfd;
int wfd;
#endif
void (*cleanup)(EventNotifier *);
};
typedef void EventNotifierHandler(EventNotifier *);

10
include/qemu/host-utils.h
View File

@ -400,6 +400,16 @@ static inline uint64_t pow2ceil(uint64_t value)
return 0x8000000000000000ull >> (n - 1);
}
static inline uint32_t pow2roundup32(uint32_t x)
{
x |= (x >> 1);
x |= (x >> 2);
x |= (x >> 4);
x |= (x >> 8);
x |= (x >> 16);
return x + 1;
}
/**
* urshift - 128-bit Unsigned Right Shift.
* @plow: in/out - lower 64-bit integer.

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tests/acpi-test-data/pc/DSDT.numamem Normal file
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tests/acpi-test-data/pc/SRAT.numamem Normal file
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BIN
tests/acpi-test-data/q35/DSDT.numamem Normal file
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tests/acpi-test-data/q35/SRAT.numamem Normal file
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50
tests/bios-tables-test.c
View File

@ -210,10 +210,15 @@ static void test_acpi_facs_table(test_data *data)
ACPI_ASSERT_CMP(facs_table->signature, "FACS");
}
static void test_dst_table(AcpiSdtTable *sdt_table, uint32_t addr)
/** fetch_table
* load ACPI table at @addr into table descriptor @sdt_table
* and check that header checksum matches actual one.
*/
static void fetch_table(AcpiSdtTable *sdt_table, uint32_t addr)
{
uint8_t checksum;
memset(sdt_table, 0, sizeof(*sdt_table));
ACPI_READ_TABLE_HEADER(&sdt_table->header, addr);
sdt_table->aml_len = le32_to_cpu(sdt_table->header.length)
@ -233,17 +238,15 @@ static void test_acpi_dsdt_table(test_data *data)
AcpiSdtTable dsdt_table;
uint32_t addr = le32_to_cpu(data->fadt_table.dsdt);
memset(&dsdt_table, 0, sizeof(dsdt_table));
data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
test_dst_table(&dsdt_table, addr);
fetch_table(&dsdt_table, addr);
ACPI_ASSERT_CMP(dsdt_table.header.signature, "DSDT");
/* Place DSDT first */
/* Since DSDT isn't in RSDT, add DSDT to ASL test tables list manually */
g_array_append_val(data->tables, dsdt_table);
}
static void test_acpi_tables(test_data *data)
/* Load all tables and add to test list directly RSDT referenced tables */
static void fetch_rsdt_referenced_tables(test_data *data)
{
int tables_nr = data->rsdt_tables_nr - 1; /* fadt is first */
int i;
@ -252,9 +255,10 @@ static void test_acpi_tables(test_data *data)
AcpiSdtTable ssdt_table;
uint32_t addr;
memset(&ssdt_table, 0, sizeof(ssdt_table));
addr = le32_to_cpu(data->rsdt_tables_addr[i + 1]); /* fadt is first */
test_dst_table(&ssdt_table, addr);
fetch_table(&ssdt_table, addr);
/* Add table to ASL test tables list */
g_array_append_val(data->tables, ssdt_table);
}
}
@ -425,6 +429,7 @@ try_again:
return exp_tables;
}
/* test the list of tables in @data->tables against reference tables */
static void test_acpi_asl(test_data *data)
{
int i;
@ -636,13 +641,14 @@ static void test_acpi_one(const char *params, test_data *data)
boot_sector_test();
data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
test_acpi_rsdp_address(data);
test_acpi_rsdp_table(data);
test_acpi_rsdt_table(data);
test_acpi_fadt_table(data);
test_acpi_facs_table(data);
test_acpi_dsdt_table(data);
test_acpi_tables(data);
fetch_rsdt_referenced_tables(data);
if (iasl) {
if (getenv(ACPI_REBUILD_EXPECTED_AML)) {
@ -810,6 +816,28 @@ static void test_acpi_piix4_tcg_memhp(void)
free_test_data(&data);
}
static void test_acpi_q35_tcg_numamem(void)
{
test_data data;
memset(&data, 0, sizeof(data));
data.machine = MACHINE_Q35;
data.variant = ".numamem";
test_acpi_one(" -numa node -numa node,mem=128", &data);
free_test_data(&data);
}
static void test_acpi_piix4_tcg_numamem(void)
{
test_data data;
memset(&data, 0, sizeof(data));
data.machine = MACHINE_PC;
data.variant = ".numamem";
test_acpi_one(" -numa node -numa node,mem=128", &data);
free_test_data(&data);
}
int main(int argc, char *argv[])
{
const char *arch = qtest_get_arch();
@ -832,6 +860,8 @@ int main(int argc, char *argv[])
qtest_add_func("acpi/q35/cpuhp", test_acpi_q35_tcg_cphp);
qtest_add_func("acpi/piix4/memhp", test_acpi_piix4_tcg_memhp);
qtest_add_func("acpi/q35/memhp", test_acpi_q35_tcg_memhp);
qtest_add_func("acpi/piix4/numamem", test_acpi_piix4_tcg_numamem);
qtest_add_func("acpi/q35/numamem", test_acpi_q35_tcg_numamem);
}
ret = g_test_run();
boot_sector_cleanup(disk);

171
tests/vhost-user-test.c
View File

@ -55,6 +55,7 @@
/*********** FROM hw/virtio/vhost-user.c *************************************/
#define VHOST_MEMORY_MAX_NREGIONS 8
#define VHOST_MAX_VIRTQUEUES 0x100
#define VHOST_USER_F_PROTOCOL_FEATURES 30
#define VHOST_USER_PROTOCOL_F_MQ 0
@ -141,6 +142,8 @@ enum {
typedef struct TestServer {
QPCIBus *bus;
QVirtioPCIDevice *dev;
QVirtQueue *vq[VHOST_MAX_VIRTQUEUES];
gchar *socket_path;
gchar *mig_path;
gchar *chr_name;
@ -155,33 +158,51 @@ typedef struct TestServer {
bool test_fail;
int test_flags;
int queues;
QGuestAllocator *alloc;
} TestServer;
static const char *tmpfs;
static const char *root;
static void init_virtio_dev(TestServer *s)
static void init_virtio_dev(TestServer *s, uint32_t features_mask)
{
QVirtioPCIDevice *dev;
uint32_t features;
int i;
s->bus = qpci_init_pc(NULL);
g_assert_nonnull(s->bus);
dev = qvirtio_pci_device_find(s->bus, VIRTIO_ID_NET);
g_assert_nonnull(dev);
s->dev = qvirtio_pci_device_find(s->bus, VIRTIO_ID_NET);
g_assert_nonnull(s->dev);
qvirtio_pci_device_enable(dev);
qvirtio_reset(&dev->vdev);
qvirtio_set_acknowledge(&dev->vdev);
qvirtio_set_driver(&dev->vdev);
qvirtio_pci_device_enable(s->dev);
qvirtio_reset(&s->dev->vdev);
qvirtio_set_acknowledge(&s->dev->vdev);
qvirtio_set_driver(&s->dev->vdev);
features = qvirtio_get_features(&dev->vdev);
features = features & VIRTIO_NET_F_MAC;
qvirtio_set_features(&dev->vdev, features);
s->alloc = pc_alloc_init();
qvirtio_set_driver_ok(&dev->vdev);
qvirtio_pci_device_free(dev);
for (i = 0; i < s->queues * 2; i++) {
s->vq[i] = qvirtqueue_setup(&s->dev->vdev, s->alloc, i);
}
features = qvirtio_get_features(&s->dev->vdev);
features = features & features_mask;
qvirtio_set_features(&s->dev->vdev, features);
qvirtio_set_driver_ok(&s->dev->vdev);
}
static void uninit_virtio_dev(TestServer *s)
{
int i;
for (i = 0; i < s->queues * 2; i++) {
qvirtqueue_cleanup(s->dev->vdev.bus, s->vq[i], s->alloc);
}
pc_alloc_uninit(s->alloc);
qvirtio_pci_device_free(s->dev);
}
static void wait_for_fds(TestServer *s)
@ -617,6 +638,30 @@ GSourceFuncs test_migrate_source_funcs = {
.check = test_migrate_source_check,
};
static void test_read_guest_mem(void)
{
TestServer *server = NULL;
char *qemu_cmd = NULL;
QTestState *s = NULL;
server = test_server_new("test");
test_server_listen(server);
qemu_cmd = GET_QEMU_CMD(server);
s = qtest_start(qemu_cmd);
g_free(qemu_cmd);
init_virtio_dev(server, 1u << VIRTIO_NET_F_MAC);
read_guest_mem(server);
uninit_virtio_dev(server);
qtest_quit(s);
test_server_free(server);
}
static void test_migrate(void)
{
TestServer *s = test_server_new("src");
@ -636,7 +681,7 @@ static void test_migrate(void)
from = qtest_start(cmd);
g_free(cmd);
init_virtio_dev(s);
init_virtio_dev(s, 1u << VIRTIO_NET_F_MAC);
wait_for_fds(s);
size = get_log_size(s);
g_assert_cmpint(size, ==, (2 * 1024 * 1024) / (VHOST_LOG_PAGE * 8));
@ -689,6 +734,8 @@ static void test_migrate(void)
read_guest_mem(dest);
uninit_virtio_dev(s);
g_source_destroy(source);
g_source_unref(source);
@ -756,7 +803,7 @@ static void test_reconnect_subprocess(void)
qtest_start(cmd);
g_free(cmd);
init_virtio_dev(s);
init_virtio_dev(s, 1u << VIRTIO_NET_F_MAC);
wait_for_fds(s);
wait_for_rings_started(s, 2);
@ -767,6 +814,8 @@ static void test_reconnect_subprocess(void)
wait_for_fds(s);
wait_for_rings_started(s, 2);
uninit_virtio_dev(s);
qtest_end();
test_server_free(s);
return;
@ -792,10 +841,12 @@ static void test_connect_fail_subprocess(void)
qtest_start(cmd);
g_free(cmd);
init_virtio_dev(s);
init_virtio_dev(s, 1u << VIRTIO_NET_F_MAC);
wait_for_fds(s);
wait_for_rings_started(s, 2);
uninit_virtio_dev(s);
qtest_end();
test_server_free(s);
}
@ -820,10 +871,12 @@ static void test_flags_mismatch_subprocess(void)
qtest_start(cmd);
g_free(cmd);
init_virtio_dev(s);
init_virtio_dev(s, 1u << VIRTIO_NET_F_MAC);
wait_for_fds(s);
wait_for_rings_started(s, 2);
uninit_virtio_dev(s);
qtest_end();
test_server_free(s);
}
@ -839,79 +892,30 @@ static void test_flags_mismatch(void)
#endif
static QVirtioPCIDevice *virtio_net_pci_init(QPCIBus *bus, int slot)
{
QVirtioPCIDevice *dev;
dev = qvirtio_pci_device_find(bus, VIRTIO_ID_NET);
g_assert(dev != NULL);
g_assert_cmphex(dev->vdev.device_type, ==, VIRTIO_ID_NET);
qvirtio_pci_device_enable(dev);
qvirtio_reset(&dev->vdev);
qvirtio_set_acknowledge(&dev->vdev);
qvirtio_set_driver(&dev->vdev);
return dev;
}
static void driver_init(QVirtioDevice *dev)
{
uint32_t features;
features = qvirtio_get_features(dev);
features = features & ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
(1u << VIRTIO_RING_F_EVENT_IDX));
qvirtio_set_features(dev, features);
qvirtio_set_driver_ok(dev);
}
#define PCI_SLOT 0x04
static void test_multiqueue(void)
{
const int queues = 2;
TestServer *s = test_server_new("mq");
QVirtioPCIDevice *dev;
QPCIBus *bus;
QVirtQueuePCI *vq[queues * 2];
QGuestAllocator *alloc;
char *cmd;
int i;
s->queues = queues;
uint32_t features_mask = ~(QVIRTIO_F_BAD_FEATURE |
(1u << VIRTIO_RING_F_INDIRECT_DESC) |
(1u << VIRTIO_RING_F_EVENT_IDX));
s->queues = 2;
test_server_listen(s);
cmd = g_strdup_printf(QEMU_CMD_MEM QEMU_CMD_CHR QEMU_CMD_NETDEV ",queues=%d "
"-device virtio-net-pci,netdev=net0,mq=on,vectors=%d",
512, 512, root, s->chr_name,
s->socket_path, "", s->chr_name,
queues, queues * 2 + 2);
s->queues, s->queues * 2 + 2);
qtest_start(cmd);
g_free(cmd);
bus = qpci_init_pc(NULL);
dev = virtio_net_pci_init(bus, PCI_SLOT);
init_virtio_dev(s, features_mask);
alloc = pc_alloc_init();
for (i = 0; i < queues * 2; i++) {
vq[i] = (QVirtQueuePCI *)qvirtqueue_setup(&dev->vdev, alloc, i);
}
wait_for_rings_started(s, s->queues * 2);
driver_init(&dev->vdev);
wait_for_rings_started(s, queues * 2);
uninit_virtio_dev(s);
/* End test */
for (i = 0; i < queues * 2; i++) {
qvirtqueue_cleanup(dev->vdev.bus, &vq[i]->vq, alloc);
}
pc_alloc_uninit(alloc);
qvirtio_pci_device_disable(dev);
g_free(dev->pdev);
g_free(dev);
qpci_free_pc(bus);
qtest_end();
test_server_free(s);
@ -919,10 +923,7 @@ static void test_multiqueue(void)
int main(int argc, char **argv)
{
QTestState *s = NULL;
TestServer *server = NULL;
const char *hugefs;
char *qemu_cmd = NULL;
int ret;
char template[] = "/tmp/vhost-test-XXXXXX";
GMainLoop *loop;
@ -947,20 +948,11 @@ int main(int argc, char **argv)
root = tmpfs;
}
server = test_server_new("test");
test_server_listen(server);
loop = g_main_loop_new(NULL, FALSE);
/* run the main loop thread so the chardev may operate */
thread = g_thread_new(NULL, thread_function, loop);
qemu_cmd = GET_QEMU_CMD(server);
s = qtest_start(qemu_cmd);
g_free(qemu_cmd);
init_virtio_dev(server);
qtest_add_data_func("/vhost-user/read-guest-mem", server, read_guest_mem);
qtest_add_func("/vhost-user/read-guest-mem", test_read_guest_mem);
qtest_add_func("/vhost-user/migrate", test_migrate);
qtest_add_func("/vhost-user/multiqueue", test_multiqueue);
@ -978,12 +970,7 @@ int main(int argc, char **argv)
ret = g_test_run();
if (s) {
qtest_quit(s);
}
/* cleanup */
test_server_free(server);
/* finish the helper thread and dispatch pending sources */
g_main_loop_quit(loop);

5
util/event_notifier-posix.c
View File

@ -29,6 +29,7 @@ void event_notifier_init_fd(EventNotifier *e, int fd)
{
e->rfd = fd;
e->wfd = fd;
e->cleanup = NULL;
}
#endif
@ -65,6 +66,7 @@ int event_notifier_init(EventNotifier *e, int active)
e->rfd = fds[0];
e->wfd = fds[1];
}
e->cleanup = NULL;
if (active) {
event_notifier_set(e);
}
@ -80,10 +82,11 @@ void event_notifier_cleanup(EventNotifier *e)
{
if (e->rfd != e->wfd) {
close(e->rfd);
e->rfd = -1;
}
close(e->wfd);
e->rfd = -1;
e->wfd = -1;
e->cleanup = NULL;
}
int event_notifier_get_fd(const EventNotifier *e)

2
util/event_notifier-win32.c
View File

@ -19,6 +19,7 @@ int event_notifier_init(EventNotifier *e, int active)
{
e->event = CreateEvent(NULL, TRUE, FALSE, NULL);
assert(e->event);
e->cleanup = NULL;
return 0;
}
@ -26,6 +27,7 @@ void event_notifier_cleanup(EventNotifier *e)
{
CloseHandle(e->event);
e->event = NULL;
e->cleanup = NULL;
}
HANDLE event_notifier_get_handle(EventNotifier *e)