[PATCH] arm64/sve: Add a comment documenting the binutils needed for SVE asm

[Mark Brown]

At some point it would be nice to avoid the need to manually encode SVE
instructions, add a note of the binutils version required to save looking
it up.

Signed-off-by: Mark Brown <broonie at kernel.org>
---
 arch/arm64/include/asm/fpsimdmacros.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/include/asm/fpsimdmacros.h b/arch/arm64/include/asm/fpsimdmacros.h
index 059204477ce6..00a2c0b69c2b 100644
--- a/arch/arm64/include/asm/fpsimdmacros.h
+++ b/arch/arm64/include/asm/fpsimdmacros.h
@@ -94,6 +94,7 @@
 .endm
 
 /* SVE instruction encodings for non-SVE-capable assemblers */
+/* (pre binutils 2.28, all kernel capable clang versions support SVE) */
 
 /* STR (vector): STR Z\nz, [X\nxbase, #\offset, MUL VL] */
 .macro _sve_str_v nz, nxbase, offset=0
-- 
2.20.1