From: Thomas Huth <thuth(a)redhat.com>
It's been marked as deprecated in QEMU v2.6.0 already, so really nobody
should use the legacy "ivshmem" device anymore (but use ivshmem-plain or
ivshmem-doorbell instead). Time to remove the deprecated device now.
Belatedly also update a mention of the deprecated "ivshmem" in the file
docs/specs/ivshmem-spec.txt to "ivshmem-doorbell". Missed in commit
5400c02b90b ("ivshmem: Split ivshmem-plain, ivshmem-doorbell off ivshmem").
Signed-off-by: Thomas Huth <thuth(a)redhat.com>
Reviewed-by: Markus Armbruster <armbru(a)redhat.com>
Reviewed-by: Michael S. Tsirkin <mst(a)redhat.com>
Signed-off-by: Michael S. Tsirkin <mst(a)redhat.com>
---
docs/specs/ivshmem-spec.txt | 8 +-
hw/i386/pc_piix.c | 1 -
hw/misc/ivshmem.c | 210 +-----------------------------------
tests/ivshmem-test.c | 67 ++++--------
qemu-deprecated.texi | 5 -
scripts/device-crash-test | 1 -
6 files changed, 34 insertions(+), 258 deletions(-)
diff --git a/docs/specs/ivshmem-spec.txt b/docs/specs/ivshmem-spec.txt
index a1f5499796..042f7eae22 100644
--- a/docs/specs/ivshmem-spec.txt
+++ b/docs/specs/ivshmem-spec.txt
@@ -17,12 +17,16 @@ get interrupted by its peers.
There are two basic configurations:
-- Just shared memory: -device ivshmem-plain,memdev=HMB,...
+- Just shared memory:
+
+ -device ivshmem-plain,memdev=HMB,...
This uses host memory backend HMB. It should have option "share"
set.
-- Shared memory plus interrupts: -device ivshmem,chardev=CHR,vectors=N,...
+- Shared memory plus interrupts:
+
+ -device ivshmem-doorbell,chardev=CHR,vectors=N,...
An ivshmem server must already be running on the host. The device
connects to the server's UNIX domain socket via character device
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 5088e2f492..63c84e3827 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -715,7 +715,6 @@ static void pc_i440fx_1_2_machine_options(MachineClass *m)
PC_CPU_MODEL_IDS("1.2.0")
{ "nec-usb-xhci", "msi", "off" },
{ "nec-usb-xhci", "msix", "off" },
- { "ivshmem", "use64", "0" },
{ "qxl", "revision", "3" },
{ "qxl-vga", "revision", "3" },
{ "VGA", "mmio", "off" },
diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 8213659602..c7b6bbc974 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -112,13 +112,6 @@ typedef struct IVShmemState {
/* migration stuff */
OnOffAuto master;
Error *migration_blocker;
-
- /* legacy cruft */
- char *role;
- char *shmobj;
- char *sizearg;
- size_t legacy_size;
- uint32_t not_legacy_32bit;
} IVShmemState;
/* registers for the Inter-VM shared memory device */
@@ -529,17 +522,6 @@ static void process_msg_shmem(IVShmemState *s, int fd, Error **errp)
size = buf.st_size;
- /* Legacy cruft */
- if (s->legacy_size != SIZE_MAX) {
- if (size < s->legacy_size) {
- error_setg(errp, "server sent only %zd bytes of shared memory",
- (size_t)buf.st_size);
- close(fd);
- return;
- }
- size = s->legacy_size;
- }
-
/* mmap the region and map into the BAR2 */
memory_region_init_ram_from_fd(&s->server_bar2, OBJECT(s),
"ivshmem.bar2", size, true, fd, &local_err);
@@ -882,8 +864,6 @@ static void ivshmem_common_realize(PCIDevice *dev, Error **errp)
IVShmemState *s = IVSHMEM_COMMON(dev);
Error *err = NULL;
uint8_t *pci_conf;
- uint8_t attr = PCI_BASE_ADDRESS_SPACE_MEMORY |
- PCI_BASE_ADDRESS_MEM_PREFETCH;
Error *local_err = NULL;
/* IRQFD requires MSI */
@@ -903,10 +883,6 @@ static void ivshmem_common_realize(PCIDevice *dev, Error **errp)
pci_register_bar(dev, 0, PCI_BASE_ADDRESS_SPACE_MEMORY,
&s->ivshmem_mmio);
- if (s->not_legacy_32bit) {
- attr |= PCI_BASE_ADDRESS_MEM_TYPE_64;
- }
-
if (s->hostmem != NULL) {
IVSHMEM_DPRINTF("using hostmem\n");
@@ -964,7 +940,11 @@ static void ivshmem_common_realize(PCIDevice *dev, Error **errp)
}
vmstate_register_ram(s->ivshmem_bar2, DEVICE(s));
- pci_register_bar(PCI_DEVICE(s), 2, attr, s->ivshmem_bar2);
+ pci_register_bar(PCI_DEVICE(s), 2,
+ PCI_BASE_ADDRESS_SPACE_MEMORY |
+ PCI_BASE_ADDRESS_MEM_PREFETCH |
+ PCI_BASE_ADDRESS_MEM_TYPE_64,
+ s->ivshmem_bar2);
}
static void ivshmem_exit(PCIDevice *dev)
@@ -1084,13 +1064,6 @@ static Property ivshmem_plain_properties[] = {
DEFINE_PROP_END_OF_LIST(),
};
-static void ivshmem_plain_init(Object *obj)
-{
- IVShmemState *s = IVSHMEM_PLAIN(obj);
-
- s->not_legacy_32bit = 1;
-}
-
static void ivshmem_plain_realize(PCIDevice *dev, Error **errp)
{
IVShmemState *s = IVSHMEM_COMMON(dev);
@@ -1122,7 +1095,6 @@ static const TypeInfo ivshmem_plain_info = {
.name = TYPE_IVSHMEM_PLAIN,
.parent = TYPE_IVSHMEM_COMMON,
.instance_size = sizeof(IVShmemState),
- .instance_init = ivshmem_plain_init,
.class_init = ivshmem_plain_class_init,
};
@@ -1155,8 +1127,6 @@ static void ivshmem_doorbell_init(Object *obj)
IVShmemState *s = IVSHMEM_DOORBELL(obj);
s->features |= (1 << IVSHMEM_MSI);
- s->legacy_size = SIZE_MAX; /* whatever the server sends */
- s->not_legacy_32bit = 1;
}
static void ivshmem_doorbell_realize(PCIDevice *dev, Error **errp)
@@ -1189,181 +1159,11 @@ static const TypeInfo ivshmem_doorbell_info = {
.class_init = ivshmem_doorbell_class_init,
};
-static int ivshmem_load_old(QEMUFile *f, void *opaque, int version_id)
-{
- IVShmemState *s = opaque;
- PCIDevice *pdev = PCI_DEVICE(s);
- int ret;
-
- IVSHMEM_DPRINTF("ivshmem_load_old\n");
-
- if (version_id != 0) {
- return -EINVAL;
- }
-
- ret = ivshmem_pre_load(s);
- if (ret) {
- return ret;
- }
-
- ret = pci_device_load(pdev, f);
- if (ret) {
- return ret;
- }
-
- if (ivshmem_has_feature(s, IVSHMEM_MSI)) {
- msix_load(pdev, f);
- ivshmem_msix_vector_use(s);
- } else {
- s->intrstatus = qemu_get_be32(f);
- s->intrmask = qemu_get_be32(f);
- }
-
- return 0;
-}
-
-static bool test_msix(void *opaque, int version_id)
-{
- IVShmemState *s = opaque;
-
- return ivshmem_has_feature(s, IVSHMEM_MSI);
-}
-
-static bool test_no_msix(void *opaque, int version_id)
-{
- return !test_msix(opaque, version_id);
-}
-
-static const VMStateDescription ivshmem_vmsd = {
- .name = "ivshmem",
- .version_id = 1,
- .minimum_version_id = 1,
- .pre_load = ivshmem_pre_load,
- .post_load = ivshmem_post_load,
- .fields = (VMStateField[]) {
- VMSTATE_PCI_DEVICE(parent_obj, IVShmemState),
-
- VMSTATE_MSIX_TEST(parent_obj, IVShmemState, test_msix),
- VMSTATE_UINT32_TEST(intrstatus, IVShmemState, test_no_msix),
- VMSTATE_UINT32_TEST(intrmask, IVShmemState, test_no_msix),
-
- VMSTATE_END_OF_LIST()
- },
- .load_state_old = ivshmem_load_old,
- .minimum_version_id_old = 0
-};
-
-static Property ivshmem_properties[] = {
- DEFINE_PROP_CHR("chardev", IVShmemState, server_chr),
- DEFINE_PROP_STRING("size", IVShmemState, sizearg),
- DEFINE_PROP_UINT32("vectors", IVShmemState, vectors, 1),
- DEFINE_PROP_BIT("ioeventfd", IVShmemState, features, IVSHMEM_IOEVENTFD,
- false),
- DEFINE_PROP_BIT("msi", IVShmemState, features, IVSHMEM_MSI, true),
- DEFINE_PROP_STRING("shm", IVShmemState, shmobj),
- DEFINE_PROP_STRING("role", IVShmemState, role),
- DEFINE_PROP_UINT32("use64", IVShmemState, not_legacy_32bit, 1),
- DEFINE_PROP_END_OF_LIST(),
-};
-
-static void desugar_shm(IVShmemState *s)
-{
- Object *obj;
- char *path;
-
- obj = object_new("memory-backend-file");
- path = g_strdup_printf("/dev/shm/%s", s->shmobj);
- object_property_set_str(obj, path, "mem-path", &error_abort);
- g_free(path);
- object_property_set_int(obj, s->legacy_size, "size", &error_abort);
- object_property_set_bool(obj, true, "share", &error_abort);
- object_property_add_child(OBJECT(s), "internal-shm-backend", obj,
- &error_abort);
- object_unref(obj);
- user_creatable_complete(USER_CREATABLE(obj), &error_abort);
- s->hostmem = MEMORY_BACKEND(obj);
-}
-
-static void ivshmem_realize(PCIDevice *dev, Error **errp)
-{
- IVShmemState *s = IVSHMEM_COMMON(dev);
-
- if (!qtest_enabled()) {
- warn_report("ivshmem is deprecated, please use ivshmem-plain"
- " or ivshmem-doorbell instead");
- }
-
- if (qemu_chr_fe_backend_connected(&s->server_chr) + !!s->shmobj != 1) {
- error_setg(errp, "You must specify either 'shm' or 'chardev'");
- return;
- }
-
- if (s->sizearg == NULL) {
- s->legacy_size = 4 * MiB; /* 4 MB default */
- } else {
- int ret;
- uint64_t size;
-
- ret = qemu_strtosz_MiB(s->sizearg, NULL, &size);
- if (ret < 0 || (size_t)size != size || !is_power_of_2(size)) {
- error_setg(errp, "Invalid size %s", s->sizearg);
- return;
- }
- s->legacy_size = size;
- }
-
- /* check that role is reasonable */
- if (s->role) {
- if (strncmp(s->role, "peer", 5) == 0) {
- s->master = ON_OFF_AUTO_OFF;
- } else if (strncmp(s->role, "master", 7) == 0) {
- s->master = ON_OFF_AUTO_ON;
- } else {
- error_setg(errp, "'role' must be 'peer' or 'master'");
- return;
- }
- } else {
- s->master = ON_OFF_AUTO_AUTO;
- }
-
- if (s->shmobj) {
- desugar_shm(s);
- }
-
- /*
- * Note: we don't use INTx with IVSHMEM_MSI at all, so this is a
- * bald-faced lie then. But it's a backwards compatible lie.
- */
- pci_config_set_interrupt_pin(dev->config, 1);
-
- ivshmem_common_realize(dev, errp);
-}
-
-static void ivshmem_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
-
- k->realize = ivshmem_realize;
- k->revision = 0;
- dc->desc = "Inter-VM shared memory (legacy)";
- dc->props = ivshmem_properties;
- dc->vmsd = &ivshmem_vmsd;
-}
-
-static const TypeInfo ivshmem_info = {
- .name = TYPE_IVSHMEM,
- .parent = TYPE_IVSHMEM_COMMON,
- .instance_size = sizeof(IVShmemState),
- .class_init = ivshmem_class_init,
-};
-
static void ivshmem_register_types(void)
{
type_register_static(&ivshmem_common_info);
type_register_static(&ivshmem_plain_info);
type_register_static(&ivshmem_doorbell_info);
- type_register_static(&ivshmem_info);
}
type_init(ivshmem_register_types)
diff --git a/tests/ivshmem-test.c b/tests/ivshmem-test.c
index fe5eb304b1..4911b69317 100644
--- a/tests/ivshmem-test.c
+++ b/tests/ivshmem-test.c
@@ -291,20 +291,20 @@ static void *server_thread(void *data)
return NULL;
}
-static void setup_vm_with_server(IVState *s, int nvectors, bool msi)
+static void setup_vm_with_server(IVState *s, int nvectors)
{
- char *cmd = g_strdup_printf("-chardev socket,id=chr0,path=%s,nowait "
- "-device ivshmem%s,chardev=chr0,vectors=%d",
- tmpserver,
- msi ? "-doorbell" : ",size=1M,msi=off",
- nvectors);
+ char *cmd;
- setup_vm_cmd(s, cmd, msi);
+ cmd = g_strdup_printf("-chardev socket,id=chr0,path=%s,nowait "
+ "-device ivshmem-doorbell,chardev=chr0,vectors=%d",
+ tmpserver, nvectors);
+
+ setup_vm_cmd(s, cmd, true);
g_free(cmd);
}
-static void test_ivshmem_server(bool msi)
+static void test_ivshmem_server(void)
{
IVState state1, state2, *s1, *s2;
ServerThread thread;
@@ -327,9 +327,9 @@ static void test_ivshmem_server(bool msi)
thread.thread = g_thread_new("ivshmem-server", server_thread, &thread);
g_assert(thread.thread != NULL);
- setup_vm_with_server(&state1, nvectors, msi);
+ setup_vm_with_server(&state1, nvectors);
s1 = &state1;
- setup_vm_with_server(&state2, nvectors, msi);
+ setup_vm_with_server(&state2, nvectors);
s2 = &state2;
/* check got different VM ids */
@@ -340,38 +340,28 @@ static void test_ivshmem_server(bool msi)
g_assert_cmpint(vm1, !=, vm2);
/* check number of MSI-X vectors */
- if (msi) {
- ret = qpci_msix_table_size(s1->dev);
- g_assert_cmpuint(ret, ==, nvectors);
- }
+ ret = qpci_msix_table_size(s1->dev);
+ g_assert_cmpuint(ret, ==, nvectors);
/* TODO test behavior before MSI-X is enabled */
/* ping vm2 -> vm1 on vector 0 */
- if (msi) {
- ret = qpci_msix_pending(s1->dev, 0);
- g_assert_cmpuint(ret, ==, 0);
- } else {
- g_assert_cmpuint(in_reg(s1, INTRSTATUS), ==, 0);
- }
+ ret = qpci_msix_pending(s1->dev, 0);
+ g_assert_cmpuint(ret, ==, 0);
out_reg(s2, DOORBELL, vm1 << 16);
do {
g_usleep(10000);
- ret = msi ? qpci_msix_pending(s1->dev, 0) : in_reg(s1, INTRSTATUS);
+ ret = qpci_msix_pending(s1->dev, 0);
} while (ret == 0 && g_get_monotonic_time() < end_time);
g_assert_cmpuint(ret, !=, 0);
/* ping vm1 -> vm2 on vector 1 */
- if (msi) {
- ret = qpci_msix_pending(s2->dev, 1);
- g_assert_cmpuint(ret, ==, 0);
- } else {
- g_assert_cmpuint(in_reg(s2, INTRSTATUS), ==, 0);
- }
+ ret = qpci_msix_pending(s2->dev, 1);
+ g_assert_cmpuint(ret, ==, 0);
out_reg(s1, DOORBELL, vm2 << 16 | 1);
do {
g_usleep(10000);
- ret = msi ? qpci_msix_pending(s2->dev, 1) : in_reg(s2, INTRSTATUS);
+ ret = qpci_msix_pending(s2->dev, 1);
} while (ret == 0 && g_get_monotonic_time() < end_time);
g_assert_cmpuint(ret, !=, 0);
@@ -389,27 +379,17 @@ static void test_ivshmem_server(bool msi)
close(thread.pipe[0]);
}
-static void test_ivshmem_server_msi(void)
-{
- test_ivshmem_server(true);
-}
-
-static void test_ivshmem_server_irq(void)
-{
- test_ivshmem_server(false);
-}
-
#define PCI_SLOT_HP 0x06
static void test_ivshmem_hotplug(void)
{
const char *arch = qtest_get_arch();
- qtest_start("");
+ qtest_start("-object memory-backend-ram,size=1M,id=mb1");
- qtest_qmp_device_add("ivshmem",
- "iv1", "{'addr': %s, 'shm': %s, 'size': '1M'}",
- stringify(PCI_SLOT_HP), tmpshm);
+ qtest_qmp_device_add("ivshmem-plain", "iv1",
+ "{'addr': %s, 'memdev': 'mb1'}",
+ stringify(PCI_SLOT_HP));
if (strcmp(arch, "ppc64") != 0) {
qpci_unplug_acpi_device_test("iv1", PCI_SLOT_HP);
}
@@ -509,8 +489,7 @@ int main(int argc, char **argv)
if (g_test_slow()) {
qtest_add_func("/ivshmem/pair", test_ivshmem_pair);
if (strcmp(arch, "ppc64") != 0) {
- qtest_add_func("/ivshmem/server-msi", test_ivshmem_server_msi);
- qtest_add_func("/ivshmem/server-irq", test_ivshmem_server_irq);
+ qtest_add_func("/ivshmem/server", test_ivshmem_server);
}
}
diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi
index 81de5fc019..219206a836 100644
--- a/qemu-deprecated.texi
+++ b/qemu-deprecated.texi
@@ -126,11 +126,6 @@ documentation of ``query-hotpluggable-cpus'' for additional details.
@section System emulator devices
-@subsection ivshmem (since 2.6.0)
-
-The ``ivshmem'' device type is replaced by either the ``ivshmem-plain''
-or ``ivshmem-doorbell`` device types.
-
@subsection bluetooth (since 3.1)
The bluetooth subsystem is unmaintained since many years and likely bitrotten
diff --git a/scripts/device-crash-test b/scripts/device-crash-test
index e93a7c0c84..a835772ac5 100755
--- a/scripts/device-crash-test
+++ b/scripts/device-crash-test
@@ -83,7 +83,6 @@ ERROR_WHITELIST = [
{'device':'isa-ipmi-bt', 'expected':True}, # IPMI device requires a bmc attribute to be set
{'device':'isa-ipmi-kcs', 'expected':True}, # IPMI device requires a bmc attribute to be set
{'device':'isa-parallel', 'expected':True}, # Can't create serial device, empty char device
- {'device':'ivshmem', 'expected':True}, # You must specify either 'shm' or 'chardev'
{'device':'ivshmem-doorbell', 'expected':True}, # You must specify a 'chardev'
{'device':'ivshmem-plain', 'expected':True}, # You must specify a 'memdev'
{'device':'loader', 'expected':True}, # please include valid arguments
--
MST
