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From: Henry Wang <Henry.Wang@arm.com>
To: xen-devel@lists.xenproject.org
Cc: Wei Chen <wei.chen@arm.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>,
	Bertrand Marquis <bertrand.marquis@arm.com>,
	Michal Orzel <michal.orzel@amd.com>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>,
	Henry Wang <Henry.Wang@arm.com>
Subject: [PATCH v6 16/17] xen/arm: Provide Kconfig options for Arm to enable NUMA
Date: Mon, 20 Nov 2023 10:54:30 +0800	[thread overview]
Message-ID: <20231120025431.14845-17-Henry.Wang@arm.com> (raw)
In-Reply-To: <20231120025431.14845-1-Henry.Wang@arm.com>

From: Wei Chen <wei.chen@arm.com>

Arm platforms support both ACPI and device tree. We don't
want users to select device tree NUMA or ACPI NUMA manually.
We hope users can just enable NUMA for Arm, and device tree
NUMA and ACPI NUMA can be selected depends on device tree
feature and ACPI feature status automatically. In this case,
these two kinds of NUMA support code can be co-exist in one
Xen binary. Xen can check feature flags to decide using
device tree or ACPI as NUMA based firmware.

So in this patch, we introduce a generic option:
CONFIG_ARM_NUMA for users to enable NUMA for Arm.
And one CONFIG_DEVICE_TREE_NUMA option for ARM_NUMA
to select when HAS_DEVICE_TREE option is enabled.
Once when ACPI NUMA for Arm is supported, ACPI_NUMA
can be selected here too.

Signed-off-by: Wei Chen <wei.chen@arm.com>
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
---
v5 -> v6:
- Rebase on top of staging without code changes.
v1 -> v5:
- Remove the condition of selecting DEVICE_TREE_NUMA.
---
 xen/arch/arm/Kconfig | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/xen/arch/arm/Kconfig b/xen/arch/arm/Kconfig
index 2939db429b..5ce6b20cf2 100644
--- a/xen/arch/arm/Kconfig
+++ b/xen/arch/arm/Kconfig
@@ -80,6 +80,17 @@ config ARM_EFI
 	  UEFI firmware. A UEFI stub is provided to allow Xen to
 	  be booted as an EFI application.
 
+config ARM_NUMA
+	bool "Arm NUMA (Non-Uniform Memory Access) Support (UNSUPPORTED)" if UNSUPPORTED
+	depends on HAS_DEVICE_TREE
+	select DEVICE_TREE_NUMA
+	help
+	  Enable Non-Uniform Memory Access (NUMA) for Arm architecutres
+
+config DEVICE_TREE_NUMA
+	bool
+	select NUMA
+
 config GICV3
 	bool "GICv3 driver"
 	depends on !NEW_VGIC
-- 
2.25.1



  parent reply	other threads:[~2023-11-20  3:06 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-20  2:54 [PATCH v6 00/17] Device tree based NUMA support for Arm Henry Wang
2023-11-20  2:54 ` [PATCH v6 01/17] xen/arm: use NR_MEM_BANKS to override default NR_NODE_MEMBLKS Henry Wang
2023-11-20  2:54 ` [PATCH v6 02/17] xen/arm: implement helpers to get and update NUMA status Henry Wang
2024-01-03 15:10   ` Julien Grall
2023-11-20  2:54 ` [PATCH v6 03/17] xen/arm: implement node distance helpers for Arm Henry Wang
2023-11-20  2:54 ` [PATCH v6 04/17] xen/arm: use arch_get_ram_range to get memory ranges from bootinfo Henry Wang
2023-11-20  2:54 ` [PATCH v6 05/17] xen/arm: build NUMA cpu_to_node map in dt_smp_init_cpus Henry Wang
2023-11-20  2:54 ` [PATCH v6 06/17] xen/arm: Add boot and secondary CPU to NUMA system Henry Wang
2023-11-20  2:54 ` [PATCH v6 07/17] xen/arm: introduce a helper to parse device tree processor node Henry Wang
2023-11-20  2:54 ` [PATCH v6 08/17] xen/arm: introduce a helper to parse device tree memory node Henry Wang
2023-11-20  2:54 ` [PATCH v6 09/17] xen/arm: introduce a helper to parse device tree NUMA distance map Henry Wang
2023-11-20  2:54 ` [PATCH v6 10/17] xen/arm: unified entry to parse all NUMA data from device tree Henry Wang
2023-11-20  2:54 ` [PATCH v6 11/17] xen/arm: keep guest still be NUMA unware Henry Wang
2023-11-20  2:54 ` [PATCH v6 12/17] xen/arm: enable device tree based NUMA in system init Henry Wang
2023-11-20  2:54 ` [PATCH v6 13/17] xen/arm: implement numa_node_to_arch_nid for device tree NUMA Henry Wang
2023-11-20  2:54 ` [PATCH v6 14/17] xen/arm: use CONFIG_NUMA to gate node_online_map in smpboot Henry Wang
2023-11-20  2:54 ` [PATCH v6 15/17] xen/arm: Set correct per-cpu cpu_core_mask Henry Wang
2023-11-20  2:54 ` Henry Wang [this message]
2023-11-20  2:54 ` [PATCH v6 17/17] docs: update numa command line to support Arm Henry Wang
2023-11-20  8:55   ` Jan Beulich
2023-11-20  8:57     ` Henry Wang
2023-11-30  1:06 ` [PATCH v6 00/17] Device tree based NUMA support for Arm Stefano Stabellini
2023-11-30  2:11   ` Henry Wang
2024-01-03 15:14 ` Julien Grall

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