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arch: um/x86: Select ARCH_SUPPORTS_ATOMIC_RMW for UML_X86

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x86 atomic instructions are used for um on UML_X86, therefore atomics
on UML_X86 support native atomic RmW as x86 does, hence select
ARCH_SUPPORTS_ATOMIC_RMW.

Reviewed-by: FUJITA Tomonori <fujita.tomonori@gmail.com>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Link: https://patch.msgid.link/20260106034034.60074-1-boqun.feng@gmail.com
This commit is contained in:
Boqun Feng
2026-01-06 11:40:34 +08:00
parent 2bb8c41e61
commit cf4c3bc144
1 changed files with 1 additions and 0 deletions
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1
arch/x86/um/Kconfig
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@@ -9,6 +9,7 @@ endmenu
config UML_X86
def_bool y
select ARCH_USE_QUEUED_RWLOCKS
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_USE_QUEUED_SPINLOCKS
select DCACHE_WORD_ACCESS
select HAVE_EFFICIENT_UNALIGNED_ACCESS