[PATCH v1 10/26] qemu: Move mem validation into post parse validator

[Michal Privoznik]

There is this function qemuDomainDefValidateMemoryHotplug() which
is called explicitly from hotplug path and the qemu's domain def
validator. This is not really necessary because we can move the
part that validates feature against qemuCaps into device
validator which is called implicitly (from qemu driver's POV).

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 src/qemu/qemu_domain.c   | 32 +-------------------------------
 src/qemu/qemu_validate.c | 16 +++++++++++++++-
 2 files changed, 16 insertions(+), 32 deletions(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 19a699540f..e705e8d8d5 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -8544,14 +8544,12 @@ qemuDomainDefValidateMemoryHotplugDevice(const virDomainMemoryDef *mem,
  */
 int
 qemuDomainDefValidateMemoryHotplug(const virDomainDef *def,
-                                   virQEMUCapsPtr qemuCaps,
+                                   virQEMUCapsPtr qemuCaps G_GNUC_UNUSED,
                                    const virDomainMemoryDef *mem)
 {
     unsigned int nmems = def->nmems;
     unsigned long long hotplugSpace;
     unsigned long long hotplugMemory = 0;
-    bool needPCDimmCap = false;
-    bool needNvdimmCap = false;
     size_t i;
 
     hotplugSpace = def->mem.max_memory - virDomainDefGetMemoryInitial(def);
@@ -8598,40 +8596,12 @@ qemuDomainDefValidateMemoryHotplug(const virDomainDef *def,
     for (i = 0; i < def->nmems; i++) {
         hotplugMemory += def->mems[i]->size;
 
-        switch (def->mems[i]->model) {
-        case VIR_DOMAIN_MEMORY_MODEL_DIMM:
-            needPCDimmCap = true;
-            break;
-
-        case VIR_DOMAIN_MEMORY_MODEL_NVDIMM:
-            needNvdimmCap = true;
-            break;
-
-        case VIR_DOMAIN_MEMORY_MODEL_NONE:
-        case VIR_DOMAIN_MEMORY_MODEL_LAST:
-            break;
-        }
-
         /* already existing devices don't need to be checked on hotplug */
         if (!mem &&
             qemuDomainDefValidateMemoryHotplugDevice(def->mems[i], def) < 0)
             return -1;
     }
 
-    if (needPCDimmCap &&
-        !virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_PC_DIMM)) {
-        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
-                       _("memory hotplug isn't supported by this QEMU binary"));
-        return -1;
-    }
-
-    if (needNvdimmCap &&
-        !virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_NVDIMM)) {
-        virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
-                       _("nvdimm isn't supported by this QEMU binary"));
-        return -1;
-    }
-
     if (hotplugMemory > hotplugSpace) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                        _("memory device total size exceeds hotplug space"));
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index 6f4662b25a..8ceea022d7 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -4595,7 +4595,16 @@ static int
 qemuValidateDomainDeviceDefMemory(virDomainMemoryDefPtr mem,
                                   virQEMUCapsPtr qemuCaps)
 {
-    if (mem->model == VIR_DOMAIN_MEMORY_MODEL_NVDIMM) {
+    switch (mem->model) {
+    case VIR_DOMAIN_MEMORY_MODEL_DIMM:
+        if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_PC_DIMM)) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+                           _("memory hotplug isn't supported by this QEMU binary"));
+            return -1;
+        }
+        break;
+
+    case VIR_DOMAIN_MEMORY_MODEL_NVDIMM:
         if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_NVDIMM)) {
             virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                            _("nvdimm isn't supported by this QEMU binary"));
@@ -4609,6 +4618,11 @@ qemuValidateDomainDeviceDefMemory(virDomainMemoryDefPtr mem,
                              "with this QEMU binary"));
             return -1;
         }
+        break;
+
+    case VIR_DOMAIN_MEMORY_MODEL_NONE:
+    case VIR_DOMAIN_MEMORY_MODEL_LAST:
+        break;
     }
 
     return 0;
-- 
2.26.2