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[PW_SID:1069108] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION#1644

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[PW_SID:1069108] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION#1644
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@linux-riscv-bot linux-riscv-bot commented Mar 19, 2026

PR for series 1069108 applied to workflow

Name: mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE and cleanup CONFIG_MIGRATION
URL: https://patchwork.kernel.org/project/linux-riscv/list/?series=1069108
Version: 1

David Hildenbrand (Arm) added 2 commits March 19, 2026 08:41
mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE
7f332f9 
All architectures that select CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE also
select CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG. So we can just remove
CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE.

For CONFIG_MIGRATION, make it depend on CONFIG_MEMORY_HOTREMOVE instead,
and make CONFIG_MEMORY_HOTREMOVE select CONFIG_MIGRATION (just like
CONFIG_CMA and CONFIG_COMPACTION already do).

We'll clean up CONFIG_MIGRATION next.

Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>
mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION
d4e87b0 
CONFIG_MEMORY_HOTREMOVE, CONFIG_COMPACTION and CONFIG_CMA all select
CONFIG_MIGRATION, because they require it to work (users).

Only CONFIG_NUMA_BALANCING and CONFIG_BALLOON_MIGRATION depend on
CONFIG_MIGRATION. CONFIG_BALLOON_MIGRATION is not an actual user, but
an implementation of migration support, so the dependency is correct
(CONFIG_BALLOON_MIGRATION does not make any sense without
CONFIG_MIGRATION).

However, kconfig-language.rst  clearly states "In general use select only
for non-visible symbols". So far CONFIG_MIGRATION is user-visible ...
and the dependencies rather confusing.

The whole reason why CONFIG_MIGRATION is user-visible is because of
CONFIG_NUMA: some users might want CONFIG_NUMA but not page migration
support.

Let's clean all that up by introducing a dedicated CONFIG_NUMA_MIGRATION
config option for that purpose only. Make CONFIG_NUMA_BALANCING that so
far depended on CONFIG_NUMA && CONFIG_MIGRATION to depend on
CONFIG_MIGRATION instead. CONFIG_NUMA_MIGRATION will depend on
CONFIG_NUMA && CONFIG_MMU.

CONFIG_NUMA_MIGRATION is user-visible and will default to "y". We
use that default so new configs will automatically enable it, just
like it was the case with CONFIG_MIGRATION. The downside is that
some configs that used to have CONFIG_MIGRATION=n might get it
re-enabled by CONFIG_NUMA_MIGRATION=y, which shouldn't be a problem.

CONFIG_MIGRATION is now a non-visible config option. Any code that
select CONFIG_MIGRATION (as before) must depend directly or indirectly
on CONFIG_MMU.

CONFIG_NUMA_MIGRATION is responsible for any NUMA migration code, which is
mempolicy migration code, memory-tiering code, and move_pages() code in
migrate.c. CONFIG_NUMA_BALANCING uses its functionality.

Note that this implies that with CONFIG_NUMA_MIGRATION=n, move_pages() will
not be available even though CONFIG_MIGRATION=y, which is an expected
change.

In migrate.c, we can remove the CONFIG_NUMA check as both
CONFIG_NUMA_MIGRATION and CONFIG_NUMA_BALANCING depend on it.

With this change, CONFIG_MIGRATION is an internal config, all users of
migration selects CONFIG_MIGRATION, and only CONFIG_BALLOON_MIGRATION
depends on it.

Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
Signed-off-by: Linux RISC-V bot <linux.riscv.bot@gmail.com>
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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 135.90 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1029.34 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1386.97 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 25.82 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 26.66 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 2.11 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 83.73 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.25 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
kdoc
Desc: Detects for kdoc errors
Duration: 0.88 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
module-param
Desc: Detect module_param changes
Duration: 0.30 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.24 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 1: "[1/2] mm: remove CONFIG_ARCH_ENABLE_MEMORY_HOTREMOVE"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.31 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
build-rv32-defconfig
Desc: Builds riscv32 defconfig
Duration: 135.18 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
build-rv64-clang-allmodconfig
Desc: Builds riscv64 allmodconfig with Clang, and checks for errors and added warnings
Duration: 1139.37 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
build-rv64-gcc-allmodconfig
Desc: Builds riscv64 allmodconfig with GCC, and checks for errors and added warnings
Duration: 1648.62 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
build-rv64-nommu-k210-defconfig
Desc: Builds riscv64 defconfig with NOMMU for K210
Duration: 25.17 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
build-rv64-nommu-k210-virt
Desc: Builds riscv64 defconfig with NOMMU for the virt platform
Duration: 26.78 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
checkpatch
Desc: Runs checkpatch.pl on the patch
Duration: 1.81 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
dtb-warn-rv64
Desc: Checks for Device Tree warnings/errors
Duration: 84.60 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
header-inline
Desc: Detects static functions without inline keyword in header files
Duration: 0.26 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
kdoc
Desc: Detects for kdoc errors
Duration: 0.94 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
module-param
Desc: Detect module_param changes
Duration: 0.30 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
verify-fixes
Desc: Verifies that the Fixes: tags exist
Duration: 0.25 seconds
Result: PASS

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linux-riscv-bot commented Mar 19, 2026

Patch 2: "[2/2] mm: introduce CONFIG_NUMA_MIGRATION and simplify CONFIG_MIGRATION"
verify-signedoff
Desc: Verifies that Signed-off-by: tags are correct
Duration: 0.32 seconds
Result: PASS

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