Hi,
On 11/08/2021 11:24, Wei Chen wrote:
We need a Kconfig option to distinguish with ACPI based
NUMA. So we introduce the new Kconfig option:
DEVICE_TREE_NUMA in this patch for Arm64.
Signed-off-by: Wei Chen <[email protected]>
---
xen/arch/arm/Kconfig | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index ecfa6822e4..678cc98ea3 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -33,6 +33,16 @@ config ACPI
Advanced Configuration and Power Interface (ACPI) support for Xen is
an alternative to device tree on ARM64.
+config DEVICE_TREE_NUMA
The name suggests that NUMA should only be enabled for Device-Tree...
But the description looks generic.
However, I think the user should only have the choice to say whether
they want NUMA to be enabled or not. We should not give them the choice
to enable/disable the parsing for DT/ACPI.
So we should have a generic config that will then select DT (and ACPI in
the future).
+ bool "NUMA (Non-Uniform Memory Access) Support (UNSUPPORTED)" if
UNSUPPORTED
+ depends on ARM_64
+ select NUMA
+ ---help---
+
+ Non-Uniform Memory Access (NUMA) is a computer memory design used in
+ multiprocessing, where the memory access time depends on the memory
+ location relative to the processor.
+
Cheers,
--
Julien Grall
