[libvirt] [PATCH] RPC: Support up to 4096 cpus on the host and 256 in the guest

[Peter Krempa]

The RPC limits for cpu maps didn't allow to use libvirt on ultra big
boxes. This patch increases size of the limits to support a maximum of
4096 cpus on the host with the built-in maximum of 256 cpus per guest.
The full cpu map of such a system takes 128 kilobytes and the map for
vcpu pinning is 512 bytes long.
---
 src/remote/remote_protocol.x | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x
index 1ebbce7..a94e0db 100644
--- a/src/remote/remote_protocol.x
+++ b/src/remote/remote_protocol.x
@@ -82,13 +82,13 @@ const REMOTE_DOMAIN_ID_LIST_MAX = 16384;
 const REMOTE_DOMAIN_NAME_LIST_MAX = 16384;

 /* Upper limit on cpumap (bytes) passed to virDomainPinVcpu. */
-const REMOTE_CPUMAP_MAX = 256;
+const REMOTE_CPUMAP_MAX = 512;

 /* Upper limit on number of info fields returned by virDomainGetVcpus. */
-const REMOTE_VCPUINFO_MAX = 2048;
+const REMOTE_VCPUINFO_MAX = 4096;

 /* Upper limit on cpumaps (bytes) passed to virDomainGetVcpus. */
-const REMOTE_CPUMAPS_MAX = 16384;
+const REMOTE_CPUMAPS_MAX = 131072;

 /* Upper limit on migrate cookie. */
 const REMOTE_MIGRATE_COOKIE_MAX = 16384;
-- 
1.8.2.1