[PATCHv2 2/4] qemu: Implement shared memory device cold (un)plug

[Luyao Huang <lhuang@xxxxxxxxxx>]

Add support for using the attach/detach device APIs on the inactive
configuration to add/del shared memory devices.

Signed-off-by: Luyao Huang <lhuang@xxxxxxxxxx>
---
 src/libvirt_private.syms |  1 +
 src/qemu/qemu_driver.c   | 21 +++++++++++++++++++--
 2 files changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 88c2c53..c89d27a 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -451,6 +451,7 @@ virDomainSaveStatus;
 virDomainSaveXML;
 virDomainSeclabelTypeFromString;
 virDomainSeclabelTypeToString;
+virDomainShmemDefFree;
 virDomainShmemFind;
 virDomainShmemInsert;
 virDomainShmemRemove;
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 65ccf99..5ded9ef 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -8174,6 +8174,15 @@ qemuDomainAttachDeviceConfig(virQEMUCapsPtr qemuCaps,
         dev->data.memory = NULL;
         break;
 
+    case VIR_DOMAIN_DEVICE_SHMEM:
+        if (virDomainShmemInsert(vmdef, dev->data.shmem) < 0)
+            return -1;
+        dev->data.shmem = NULL;
+
+        if (qemuDomainAssignAddresses(vmdef, qemuCaps, NULL) < 0)
+            return -1;
+        break;
+
     case VIR_DOMAIN_DEVICE_INPUT:
     case VIR_DOMAIN_DEVICE_SOUND:
     case VIR_DOMAIN_DEVICE_VIDEO:
@@ -8183,7 +8192,6 @@ qemuDomainAttachDeviceConfig(virQEMUCapsPtr qemuCaps,
     case VIR_DOMAIN_DEVICE_SMARTCARD:
     case VIR_DOMAIN_DEVICE_MEMBALLOON:
     case VIR_DOMAIN_DEVICE_NVRAM:
-    case VIR_DOMAIN_DEVICE_SHMEM:
     case VIR_DOMAIN_DEVICE_REDIRDEV:
     case VIR_DOMAIN_DEVICE_NONE:
     case VIR_DOMAIN_DEVICE_TPM:
@@ -8310,6 +8318,16 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef,
         virDomainMemoryDefFree(virDomainMemoryRemove(vmdef, idx));
         break;
 
+    case VIR_DOMAIN_DEVICE_SHMEM:
+        if ((idx = virDomainShmemFind(vmdef, dev->data.shmem, true)) < 0) {
+            virReportError(VIR_ERR_OPERATION_FAILED, "%s",
+                           _("no matching shared memory device was found"));
+            return -1;
+        }
+
+        virDomainShmemDefFree(virDomainShmemRemove(vmdef, idx));
+        break;
+
     case VIR_DOMAIN_DEVICE_INPUT:
     case VIR_DOMAIN_DEVICE_SOUND:
     case VIR_DOMAIN_DEVICE_VIDEO:
@@ -8319,7 +8337,6 @@ qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef,
     case VIR_DOMAIN_DEVICE_SMARTCARD:
     case VIR_DOMAIN_DEVICE_MEMBALLOON:
     case VIR_DOMAIN_DEVICE_NVRAM:
-    case VIR_DOMAIN_DEVICE_SHMEM:
     case VIR_DOMAIN_DEVICE_REDIRDEV:
     case VIR_DOMAIN_DEVICE_NONE:
     case VIR_DOMAIN_DEVICE_TPM:
-- 
1.8.3.1

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