On 03/17/2015 10:19 PM, Peter Krempa wrote:
Add a few helpers that allow to operate with memory device definitions
on the domain config and use them to implement memory device coldplug in
the qemu driver.
---
Notes:
Version 2:
- no changes
src/conf/domain_conf.c | 100 +++++++++++++++++++++++++++++++++++++++++++++++
src/conf/domain_conf.h | 10 +++++
src/libvirt_private.syms | 4 ++
src/qemu/qemu_driver.c | 15 ++++++-
4 files changed, 127 insertions(+), 2 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 8c2234f..1a02e46 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -12811,6 +12811,106 @@ virDomainRNGRemove(virDomainDefPtr def,
}
+static int
+virDomainMemoryFindByDefInternal(virDomainDefPtr def,
+ virDomainMemoryDefPtr mem,
+ bool allowAddressFallback)
+{
+ size_t i;
+
+ for (i = 0; i < def->nmems; i++) {
+ virDomainMemoryDefPtr tmp = def->mems[i];
+
+ /* address, if present */
+ if (allowAddressFallback) {
+ if (tmp->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
+ continue;
+ } else {
+ if (mem->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
+ !virDomainDeviceInfoAddressIsEqual(&tmp->info, &mem->info))
+ continue;
+ }
+
+ /* alias, if present */
+ if (mem->info.alias &&
+ STRNEQ_NULLABLE(tmp->info.alias, mem->info.alias))
+ continue;
+
+ /* target info -> always present */
+ if (tmp->model != mem->model ||
+ tmp->targetNode != mem->targetNode ||
+ tmp->size != mem->size)
I have tested your series with our qemu memory hot remove patch series,
here would be a possible error.
When hotplug a memory device, its size has been aligned. So the compare for
size here would fail possiblely.
Thanks,
Zhu
+ continue;
+
+ /* source stuff -> match with device */
+ if (tmp->pagesize != mem->pagesize)
+ continue;
+
+ if (!virBitmapEqual(tmp->sourceNodes, mem->sourceNodes))
+ continue;
+
+ break;
+ }
+
+ if (i == def->nmems)
+ return -1;
+
+ return i;
+}
+
+
+int
+virDomainMemoryFindByDef(virDomainDefPtr def,
+ virDomainMemoryDefPtr mem)
+{
+ return virDomainMemoryFindByDefInternal(def, mem, false);
+}
+
[...]
--
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