diff options
| author | Laurent Vivier <lvivier@redhat.com> | 2017-03-21 11:25:42 +0100 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2017-03-22 11:32:42 +1100 |
| commit | 55641213fc81cdfc3bcd56c9e9991faa119201b2 (patch) | |
| tree | f48f41e82bdafedf094dfc0d03f55cbde2fb9c33 /hw/core | |
| parent | 55a19ad8b2d0797e3a8fe90ab99a9bb713824059 (diff) | |
numa,spapr: align default numa node memory size to 256MB
Since commit 224245b ("spapr: Add LMB DR connectors"), NUMA node
memory size must be aligned to 256MB (SPAPR_MEMORY_BLOCK_SIZE).
But when "-numa" option is provided without "mem" parameter,
the memory is equally divided between nodes, but 8MB aligned.
This can be not valid for pseries.
In that case we can have:
$ ./ppc64-softmmu/qemu-system-ppc64 -m 4G -numa node -numa node -numa node
qemu-system-ppc64: Node 0 memory size 0x55000000 is not aligned to 256 MiB
With this patch, we have:
(qemu) info numa
3 nodes
node 0 cpus: 0
node 0 size: 1280 MB
node 1 cpus:
node 1 size: 1280 MB
node 2 cpus:
node 2 size: 1536 MB
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/core')
| -rw-r--r-- | hw/core/machine.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/hw/core/machine.c b/hw/core/machine.c index 0d92672203..ada9eea483 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -396,6 +396,11 @@ static void machine_class_init(ObjectClass *oc, void *data) mc->default_ram_size = 128 * M_BYTE; mc->rom_file_has_mr = true; + /* numa node memory size aligned on 8MB by default. + * On Linux, each node's border has to be 8MB aligned + */ + mc->numa_mem_align_shift = 23; + object_class_property_add_str(oc, "accel", machine_get_accel, machine_set_accel, &error_abort); object_class_property_set_description(oc, "accel", |