6.6-stable review patch. If anyone has any objections, please let me know.
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From: Tiezhu Yang yangtiezhu@loongson.cn
commit 29d44cce324dab2bd86c447071a596262e7109b6 upstream.
Currently, LoongArch LLVM does not support the constraint "o" and no plan to support it, it only supports the similar constraint "m", so change the constraints from "nor" in the "else" case to arch-specific "nmr" to avoid the build error such as "unexpected asm memory constraint" for LoongArch.
Fixes: 630301b0d59d ("selftests/bpf: Add basic USDT selftests") Suggested-by: Weining Lu luweining@loongson.cn Suggested-by: Li Chen chenli@loongson.cn Signed-off-by: Tiezhu Yang yangtiezhu@loongson.cn Signed-off-by: Daniel Borkmann daniel@iogearbox.net Reviewed-by: Huacai Chen chenhuacai@loongson.cn Cc: stable@vger.kernel.org Link: https://llvm.org/docs/LangRef.html#supported-constraint-code-list Link: https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/LoongArch/Loo... Link: https://lore.kernel.org/bpf/20241219111506.20643-1-yangtiezhu@loongson.cn Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/bpf/sdt.h | 2 ++ 1 file changed, 2 insertions(+)
--- a/tools/testing/selftests/bpf/sdt.h +++ b/tools/testing/selftests/bpf/sdt.h @@ -102,6 +102,8 @@ # define STAP_SDT_ARG_CONSTRAINT nZr # elif defined __arm__ # define STAP_SDT_ARG_CONSTRAINT g +# elif defined __loongarch__ +# define STAP_SDT_ARG_CONSTRAINT nmr # else # define STAP_SDT_ARG_CONSTRAINT nor # endif