This is a note to let you know that I've just added the patch titled crypto: x86/crc32c - fix building with clang ias to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: crypto-x86-crc32c-fix-building-with-clang-ias.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 44623b2818f4a442726639572f44fd9b6d0ef68c Mon Sep 17 00:00:00 2001 From: Arnd Bergmann <arnd@xxxxxxxx> Date: Wed, 27 May 2020 16:17:40 +0200 Subject: crypto: x86/crc32c - fix building with clang ias From: Arnd Bergmann <arnd@xxxxxxxx> commit 44623b2818f4a442726639572f44fd9b6d0ef68c upstream. The clang integrated assembler complains about movzxw: arch/x86/crypto/crc32c-pcl-intel-asm_64.S:173:2: error: invalid instruction mnemonic 'movzxw' It seems that movzwq is the mnemonic that it expects instead, and this is what objdump prints when disassembling the file. Fixes: 6a8ce1ef3940 ("crypto: crc32c - Optimize CRC32C calculation with PCLMULQDQ instruction") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Reviewed-by: Nathan Chancellor <natechancellor@xxxxxxxxx> Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> [jc: Fixed conflicts due to lack of 34fdce6981b9 ("x86: Change {JMP,CALL}_NOSPEC argument")] Signed-off-by: Jian Cai <jiancai@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/x86/crypto/crc32c-pcl-intel-asm_64.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S +++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S @@ -170,7 +170,7 @@ continue_block: ## branch into array lea jump_table(%rip), bufp - movzxw (bufp, %rax, 2), len + movzwq (bufp, %rax, 2), len lea crc_array(%rip), bufp lea (bufp, len, 1), bufp JMP_NOSPEC bufp Patches currently in stable-queue which might be from arnd@xxxxxxxx are queue-5.4/crypto-x86-crc32c-fix-building-with-clang-ias.patch