From: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
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@xxxxxxxxxxx>
Suggested-by: Li Chen <chenli@xxxxxxxxxxx>
Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx>
Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Reviewed-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://llvm.org/docs/LangRef.html#supported-constraint-code-list
Link: https://github.com/llvm/llvm-project/blob/main/llvm/lib/Target/LoongArch/LoongArchISelDAGToDAG.cpp#L172
Link: https://lore.kernel.org/bpf/20241219111506.20643-1-yangtiezhu@xxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
Patches currently in stable-queue which might be from yangtiezhu@xxxxxxxxxxx are
queue-6.1/selftests-bpf-use-asm-constraint-m-for-loongarch.patch
