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Message-Id: <20251120-2-v1-2-705bdc440550@linux.dev> Date: Thu, 20 Nov 2025 15:45:45 +0800 From: George Guo <dongtai.guo@...ux.dev> To: Huacai Chen <chenhuacai@...nel.org>, WANG Xuerui <kernel@...0n.name> Cc: loongarch@...ts.linux.dev, linux-kernel@...r.kernel.org, George Guo <dongtai.guo@...ux.dev>, George Guo <guodongtai@...inos.cn> Subject: [PATCH 2/2] 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 5b1116733d881bc2b1b43fb93f20367add4dbc54..6fb2c253969f9ddece5478920423d7326c3ec046 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_JUMP_LABEL select HAVE_ARCH_JUMP_LABEL_RELATIVE @@ -140,6 +141,7 @@ 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 -- 2.48.1
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