[PATCH] arch: um/x86: Select ARCH_SUPPORTS_ATOMIC_RMW for UML_X86

[FUJITA Tomonori]

On Tue,  6 Jan 2026 11:40:34 +0800
Boqun Feng <boqun.feng at gmail.com> wrote:

> 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.
> 
> Signed-off-by: Boqun Feng <boqun.feng at gmail.com>

Reviewed-by: FUJITA Tomonori <fujita.tomonori at gmail.com>