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Message-ID: <20251229063408.34340-5-dongtai.guo@linux.dev> Date: Mon, 29 Dec 2025 14:34:08 +0800 From: George Guo <dongtai.guo@...ux.dev> To: hengqi.chen@...il.com Cc: chenhuacai@...nel.org, dongtai.guo@...ux.dev, guodongtai@...inos.cn, kernel@...0n.name, lianyangyang@...inos.cn, linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev, r@....cc, xry111@...111.site Subject: [PATCH loongarch-next 4/4] LoongArch: Enable 128-bit atomics cmpxchg support From: George Guo <guodongtai@...inos.cn> Add select HAVE_CMPXCHG_DOUBLE and select HAVE_ALIGNED_STRUCT_PAGE in Kconfig to enable 128-bit atomic cmpxchg support on LoongArch. Signed-off-by: George Guo <guodongtai@...inos.cn> --- arch/loongarch/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 730f34214519..d4de823276d1 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -114,6 +114,7 @@ config LOONGARCH select GENERIC_TIME_VSYSCALL select GPIOLIB select HAS_IOPORT + select HAVE_ALIGNED_STRUCT_PAGE select HAVE_ARCH_AUDITSYSCALL select HAVE_ARCH_BITREVERSE select HAVE_ARCH_JUMP_LABEL @@ -141,6 +142,7 @@ config LOONGARCH select HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS select HAVE_DYNAMIC_FTRACE_WITH_REGS select HAVE_EBPF_JIT + select HAVE_CMPXCHG_DOUBLE select HAVE_EFFICIENT_UNALIGNED_ACCESS if !ARCH_STRICT_ALIGN select HAVE_EXIT_THREAD select HAVE_GENERIC_TIF_BITS -- 2.49.0
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