[PATCH v2 0/4] ACPI based NUMA support for ARM64

[zhaoshenglong@huawei.com (Shannon Zhao)]

On 2015/11/18 2:25, Ganapatrao Kulkarni wrote:
>  -v2 rebased on arm64-numa v7 patches.
>  http://www.spinics.net/lists/arm-kernel/msg460813.html
> 
>  -v1 initial patches from Hanjun Guo
> 
> Hanjun Guo (4):
>   acpi, numa: Use pr_fmt() instead of printk
>   acpi, numa: Replace ACPI_DEBUG_PRINT() with pr_debug()
>   arm64, acpi, numa: NUMA support based on SRAT and SLIT
>   acpi, numa: Enable ACPI based NUMA on ARM64
> 
>  arch/arm64/include/asm/acpi.h |   4 +
>  arch/arm64/kernel/Makefile    |   1 +
>  arch/arm64/kernel/acpi_numa.c | 215 ++++++++++++++++++++++++++++++++++++++++++
>  arch/arm64/mm/numa.c          |   7 +-
>  drivers/acpi/Kconfig          |   4 +-
>  drivers/acpi/numa.c           | 106 ++++++++++++---------
>  include/linux/acpi.h          |  15 +++
>  7 files changed, 306 insertions(+), 46 deletions(-)
>  create mode 100644 arch/arm64/kernel/acpi_numa.c
> 

I've tested this patch set on QEMU VM and guest prints below log:

ACPI: NUMA: SRAT: PXM 0 -> MPIDR 0x0 -> Node 0 cpu 1
ACPI: NUMA: SRAT: PXM 0 -> MPIDR 0x1 -> Node 0 cpu 2
ACPI: NUMA: SRAT: PXM 1 -> MPIDR 0x2 -> Node 1 cpu 3
ACPI: NUMA: SRAT: PXM 1 -> MPIDR 0x3 -> Node 1 cpu 4
ACPI: NUMA: SRAT: Node 0 PXM 0 [mem 0x40000000-0x5fffffff]
NUMA: Adding memblock [0x40000000 - 0x5fffffff] on node 0
ACPI: NUMA: SRAT: Node 1 PXM 1 [mem 0x60000000-0x7fffffff]
NUMA: Adding memblock [0x60000000 - 0x7fffffff] on node 1
Initmem setup node 0 [mem 0x40000000-0x5fffffff]
  NODE_DATA [mem 0x5fffe400-0x5fffffff]
Initmem setup node 1 [mem 0x60000000-0x7fffffff]
  NODE_DATA [mem 0x7effd400-0x7effefff]
Zone ranges:
  DMA      [mem 0x0000000040000000-0x000000007fffffff]
  Normal   empty
Movable zone start for each node
Early memory node ranges
  node   0: [mem 0x0000000040000000-0x000000005fffffff]
  node   1: [mem 0x0000000060000000-0x000000007fffffff]
Initmem setup node 0 [mem 0x0000000040000000-0x000000005fffffff]
Initmem setup node 1 [mem 0x0000000060000000-0x000000007fffffff]

So, Tested-by: Shannon Zhao <shannon.zhao@linaro.org>

-- 
Shannon