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[Xen-devel] [PATCH v5 3/8] vnuma xl.cfg.pod and idl config options

Signed-off-by: Elena Ufimtseva <ufimtseva@xxxxxxxxx>
 docs/man/xl.cfg.pod.5       |   64 ++++++++++++++++++++++++++++++++++++++++++-
 tools/libxl/libxl_types.idl |    6 +++-
 2 files changed, 68 insertions(+), 2 deletions(-)

diff --git a/docs/man/xl.cfg.pod.5 b/docs/man/xl.cfg.pod.5
index a94d037..cf98c2b 100644
--- a/docs/man/xl.cfg.pod.5
+++ b/docs/man/xl.cfg.pod.5
@@ -242,6 +242,66 @@ if the values of B<memory=> and B<maxmem=> differ.
 A "pre-ballooned" HVM guest needs a balloon driver, without a balloon driver
 it will crash.
+=item B<vnuma_nodes=N>
+Number of vNUMA nodes the guest will be initialized with on boot.
+=item B<vnuma_mem=[vmem1, vmem2, ...]>
+The vnode memory sizes defined in MBytes. If the sum of all vnode memories
+does not match the domain memory or not all the nodes defined here, will fail.
+If not specified, memory will be equally split between vnodes. Currently
+minimum vnode size is 64MB.
+Example: vnuma_mem=[1024, 1024, 2048, 2048]
+=item B<vdistance=[d1, d2]>
+Defines the distance table for vNUMA nodes. Distance for NUMA machines usually
+ represented by two dimensional array and all distance may be spcified in one
+line here, by rows. Distance can be specified as two numbers [d1, d2],
+where d1 is same node distance, d2 is a value for all other distances.
+If not specified, the defaul distance will be used, e.g. [10, 20].
+vnodes = 3
+vdistance=[10, 20]
+will expand to this distance table (this is default setting as well):
+[10, 20, 20]
+[20, 10, 20]
+[20, 20, 10]
+=item B<vnuma_vcpumap=[vcpu1, vcpu2, ...]>
+Defines vcpu to vnode mapping as a string of integers, representing node
+numbers. If not defined, the vcpus are interleaved over the virtual nodes.
+Current limitation: vNUMA nodes have to have at least one vcpu, otherwise
+default vcpu_to_vnode will be used.
+to map 4 vcpus to 2 nodes - 0,1 vcpu -> vnode1, 2,3 vcpu -> vnode2:
+vnuma_vcpumap = [0, 0, 1, 1]
+=item B<vnuma_vnodemap=[p1, p2, ..., pn]>
+vnode to pnode mapping. Can be configured if manual vnode allocation
+required. Will be only taken into effect on real NUMA machines and if
+memory or other constraints do not prevent it. If the mapping is ok,
+automatic NUMA placement will be disabled. If the mapping incorrect
+and vnuma_autoplacement is true, automatical numa placement will be used,
+otherwise fails to create domain.
+assume two node NUMA node machine:
+vnuma_vndoemap=[1, 0]
+first vnode will be placed on node 1, second on node0.
+=item B<vnuma_autoplacement=[0|1]>
+If enabled, automatically will find the best placement physical node candidate 
+each vnode if vnuma_vnodemap is incorrect or memory requirements prevent
+using it. Set to '0' by default.
 =head3 Event Actions
@@ -620,6 +680,7 @@ must be given in hexadecimal.
 It is recommended to use this option only for trusted VMs under
 administrator control.
 =item B<irqs=[ NUMBER, NUMBER, ... ]>
 Allow a guest to access specific physical IRQs.
@@ -701,7 +762,6 @@ it is safe to allow this to be enabled but you may wish to 
disable it
 =item B<pvh=BOOLEAN>
 Selects whether to run this PV guest in an HVM container. Default is 0.
@@ -944,6 +1004,7 @@ preceded by a 32b integer indicating the size of the next 
 =item B<tsc_mode="MODE">
 Specifies how the TSC (Time Stamp Counter) should be provided to the
 guest (X86 only). Specifying this option as a number is
 deprecated. Options are:
@@ -989,6 +1050,7 @@ i.e. set to UTC.
 Set the real time clock offset in seconds. False (0) by default.
 =item B<vpt_align=BOOLEAN>
 Specifies that periodic Virtual Platform Timers should be aligned to
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 52f1aa9..f9fb21e 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -313,7 +313,11 @@ libxl_domain_build_info = Struct("domain_build_info",[
     ("disable_migrate", libxl_defbool),
     ("cpuid",           libxl_cpuid_policy_list),
     ("blkdev_start",    string),
+    ("numa_memszs",     Array(uint64, "nr_nodes")),
+    ("cpu_to_node",     Array(uint32, "nr_nodemap")),
+    ("distance",        Array(uint32, "nr_dist")),
+    ("vnode_to_pnode",  Array(uint32, "nr_node_to_pnode")),
+    ("vnuma_autoplacement",  libxl_defbool),
     ("device_model_version", libxl_device_model_version),
     ("device_model_stubdomain", libxl_defbool),
     # if you set device_model you must set device_model_version too

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