diff options
| author |   Boqun Feng <boqun.feng@gmail.com> | 2026-01-06 11:40:34 +0800 |
|---|---|---|
| committer | Boqun Feng <boqun.feng@gmail.com> | 2026-01-09 19:01:41 +0800 |
| commit | cf4c3bc1445152c1949a4b5fef56d07579fadb1e (patch) | |
| tree | 5640afe9a9ec58b5d9393a5c4d9f27f7f6638b3d | |
| parent | rust: sync: atomic: Prepare AtomicOps macros for i8/i16 support (diff) | |
arch: um/x86: Select ARCH_SUPPORTS_ATOMIC_RMW for UML_X86
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
| -rw-r--r-- | arch/x86/um/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig index bdd7c8e39b01..44b12e45f9a0 100644 --- a/arch/x86/um/Kconfig +++ b/arch/x86/um/Kconfig @@ -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 |