Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio,acpi: features, fixes, cleanups.

vdpa support
virtio-mem support
a handy script for disassembling acpi tables
misc fixes and cleanups

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

# gpg: Signature made Tue 07 Jul 2020 13:00:35 BST
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# 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: (41 commits)
  vhost-vdpa: introduce vhost-vdpa net client
  vhost-vdpa: introduce vhost-vdpa backend
  vhost_net: introduce set_config & get_config
  vhost: implement vhost_force_iommu method
  vhost: introduce new VhostOps vhost_force_iommu
  vhost: implement vhost_vq_get_addr method
  vhost: introduce new VhostOps vhost_vq_get_addr
  vhost: implement vhost_dev_start method
  vhost: introduce new VhostOps vhost_dev_start
  vhost: check the existence of vhost_set_iotlb_callback
  virtio-pci: implement queue_enabled method
  virtio-bus: introduce queue_enabled method
  vhost_net: use the function qemu_get_peer
  net: introduce qemu_get_peer
  MAINTAINERS: add VT-d entry
  docs: vhost-user: add Virtio status protocol feature
  tests/acpi: remove stale allowed tables
  numa: Auto-enable NUMA when any memory devices are possible
  virtio-mem: Exclude unplugged memory during migration
  virtio-mem: Add trace events
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	hw/arm/virt.c
#	hw/virtio/trace-events

5 files changed, 42 insertions, 28 deletions

diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
index c93f32f657..03e347b207 100644
--- a/hw/i386/Kconfig
+++ b/hw/i386/Kconfig
@@ -35,6 +35,7 @@ config PC
     select ACPI_PCI
     select ACPI_VMGENID
     select VIRTIO_PMEM_SUPPORTED
+    select VIRTIO_MEM_SUPPORTED
 
 config PC_PCI
     bool
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index 5e931975a0..81d0888930 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -464,6 +464,7 @@ static void microvm_class_init(ObjectClass *oc, void *data)
     mc->max_cpus = 288;
     mc->has_hotpluggable_cpus = false;
     mc->auto_enable_numa_with_memhp = false;
+    mc->auto_enable_numa_with_memdev = false;
     mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
     mc->nvdimm_supported = false;
     mc->default_ram_id = "microvm.ram";
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 4af9679d03..61acc9e530 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -88,6 +88,7 @@
 #include "hw/net/ne2000-isa.h"
 #include "standard-headers/asm-x86/bootparam.h"
 #include "hw/virtio/virtio-pmem-pci.h"
+#include "hw/virtio/virtio-mem-pci.h"
 #include "hw/mem/memory-device.h"
 #include "sysemu/replay.h"
 #include "qapi/qmp/qerror.h"
@@ -1637,19 +1638,20 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
     numa_cpu_pre_plug(cpu_slot, dev, errp);
 }
 
-static void pc_virtio_pmem_pci_pre_plug(HotplugHandler *hotplug_dev,
-                                        DeviceState *dev, Error **errp)
+static void pc_virtio_md_pci_pre_plug(HotplugHandler *hotplug_dev,
+                                      DeviceState *dev, Error **errp)
 {
     HotplugHandler *hotplug_dev2 = qdev_get_bus_hotplug_handler(dev);
     Error *local_err = NULL;
 
-    if (!hotplug_dev2) {
+    if (!hotplug_dev2 && dev->hotplugged) {
         /*
          * Without a bus hotplug handler, we cannot control the plug/unplug
-         * order. This should never be the case on x86, however better add
-         * a safety net.
+         * order. We should never reach this point when hotplugging on x86,
+         * however, better add a safety net.
          */
-        error_setg(errp, "virtio-pmem-pci not supported on this bus.");
+        error_setg(errp, "hotplug of virtio based memory devices not supported"
+                   " on this bus.");
         return;
     }
     /*
@@ -1658,14 +1660,14 @@ static void pc_virtio_pmem_pci_pre_plug(HotplugHandler *hotplug_dev,
      */
     memory_device_pre_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev), NULL,
                            &local_err);
-    if (!local_err) {
+    if (!local_err && hotplug_dev2) {
         hotplug_handler_pre_plug(hotplug_dev2, dev, &local_err);
     }
     error_propagate(errp, local_err);
 }
 
-static void pc_virtio_pmem_pci_plug(HotplugHandler *hotplug_dev,
-                                    DeviceState *dev, Error **errp)
+static void pc_virtio_md_pci_plug(HotplugHandler *hotplug_dev,
+                                  DeviceState *dev, Error **errp)
 {
     HotplugHandler *hotplug_dev2 = qdev_get_bus_hotplug_handler(dev);
     Error *local_err = NULL;
@@ -1676,24 +1678,26 @@ static void pc_virtio_pmem_pci_plug(HotplugHandler *hotplug_dev,
      * device bits.
      */
     memory_device_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
-    hotplug_handler_plug(hotplug_dev2, dev, &local_err);
-    if (local_err) {
-        memory_device_unplug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
+    if (hotplug_dev2) {
+        hotplug_handler_plug(hotplug_dev2, dev, &local_err);
+        if (local_err) {
+            memory_device_unplug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
+        }
     }
     error_propagate(errp, local_err);
 }
 
-static void pc_virtio_pmem_pci_unplug_request(HotplugHandler *hotplug_dev,
-                                              DeviceState *dev, Error **errp)
+static void pc_virtio_md_pci_unplug_request(HotplugHandler *hotplug_dev,
+                                            DeviceState *dev, Error **errp)
 {
-    /* We don't support virtio pmem hot unplug */
-    error_setg(errp, "virtio pmem device unplug not supported.");
+    /* We don't support hot unplug of virtio based memory devices */
+    error_setg(errp, "virtio based memory devices cannot be unplugged.");
 }
 
-static void pc_virtio_pmem_pci_unplug(HotplugHandler *hotplug_dev,
-                                      DeviceState *dev, Error **errp)
+static void pc_virtio_md_pci_unplug(HotplugHandler *hotplug_dev,
+                                    DeviceState *dev, Error **errp)
 {
-    /* We don't support virtio pmem hot unplug */
+    /* We don't support hot unplug of virtio based memory devices */
 }
 
 static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
@@ -1703,8 +1707,9 @@ static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
         pc_memory_pre_plug(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
         pc_cpu_pre_plug(hotplug_dev, dev, errp);
-    } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
-        pc_virtio_pmem_pci_pre_plug(hotplug_dev, dev, errp);
+    } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
+               object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
+        pc_virtio_md_pci_pre_plug(hotplug_dev, dev, errp);
     }
 }
 
@@ -1715,8 +1720,9 @@ static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev,
         pc_memory_plug(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
         pc_cpu_plug(hotplug_dev, dev, errp);
-    } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
-        pc_virtio_pmem_pci_plug(hotplug_dev, dev, errp);
+    } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
+               object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
+        pc_virtio_md_pci_plug(hotplug_dev, dev, errp);
     }
 }
 
@@ -1727,8 +1733,9 @@ static void pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
         pc_memory_unplug_request(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
         pc_cpu_unplug_request_cb(hotplug_dev, dev, errp);
-    } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
-        pc_virtio_pmem_pci_unplug_request(hotplug_dev, dev, errp);
+    } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
+               object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
+        pc_virtio_md_pci_unplug_request(hotplug_dev, dev, errp);
     } else {
         error_setg(errp, "acpi: device unplug request for not supported device"
                    " type: %s", object_get_typename(OBJECT(dev)));
@@ -1742,8 +1749,9 @@ static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
         pc_memory_unplug(hotplug_dev, dev, errp);
     } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
         pc_cpu_unplug_cb(hotplug_dev, dev, errp);
-    } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
-        pc_virtio_pmem_pci_unplug(hotplug_dev, dev, errp);
+    } else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
+               object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
+        pc_virtio_md_pci_unplug(hotplug_dev, dev, errp);
     } else {
         error_setg(errp, "acpi: device unplug for not supported device"
                    " type: %s", object_get_typename(OBJECT(dev)));
@@ -1755,7 +1763,8 @@ static HotplugHandler *pc_get_hotplug_handler(MachineState *machine,
 {
     if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) ||
         object_dynamic_cast(OBJECT(dev), TYPE_CPU) ||
-        object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
+        object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI) ||
+        object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MEM_PCI)) {
         return HOTPLUG_HANDLER(machine);
     }
 
@@ -1966,6 +1975,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     mc->get_default_cpu_node_id = x86_get_default_cpu_node_id;
     mc->possible_cpu_arch_ids = x86_possible_cpu_arch_ids;
     mc->auto_enable_numa_with_memhp = true;
+    mc->auto_enable_numa_with_memdev = true;
     mc->has_hotpluggable_cpus = true;
     mc->default_boot_order = "cad";
     mc->hot_add_cpu = pc_hot_add_cpu;
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 1d832b2878..fae487f57d 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -444,6 +444,7 @@ static void pc_i440fx_5_0_machine_options(MachineClass *m)
     m->numa_mem_supported = true;
     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
+    m->auto_enable_numa_with_memdev = false;
 }
 
 DEFINE_I440FX_MACHINE(v5_0, "pc-i440fx-5.0", NULL,
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 047ea8db28..acd6d405f0 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -372,6 +372,7 @@ static void pc_q35_5_0_machine_options(MachineClass *m)
     m->numa_mem_supported = true;
     compat_props_add(m->compat_props, hw_compat_5_0, hw_compat_5_0_len);
     compat_props_add(m->compat_props, pc_compat_5_0, pc_compat_5_0_len);
+    m->auto_enable_numa_with_memhp = false;
 }
 
 DEFINE_Q35_MACHINE(v5_0, "pc-q35-5.0", NULL,