[PATCH loongarch-next 4/4] LoongArch: Enable 128-bit atomics cmpxchg support

[George Guo <dongtai.guo@linux.dev>]

From: George Guo <guodongtai@kylinos.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@kylinos.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