[PATCH v2 16/18] arm64: crypto: disable LTO for aes-ce-cipher.c
From: mark.rutland@arm.com (Mark Rutland)
Date: 2017-11-20 15:20:21
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On Wed, Nov 15, 2017 at 01:34:26PM -0800, Sami Tolvanen wrote:
CONFIG_LTO_CLANG requires the use of clang's integrated assembler, which doesn't understand the inline assembly in aes-ce-cipher.c. Disable LTO for the file to work around the issue.
Could you elaborate on what the integrated asembler doesn't like? It's not entirely clear at a glance, as the asm in that file doesn't seem to do anything that obscure. Is it a bug? Thanks, Mark.
quoted hunk ↗ jump to hunk
Acked-by: Ard Biesheuvel <redacted> Signed-off-by: Sami Tolvanen <samitolvanen@google.com> --- arch/arm64/crypto/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)diff --git a/arch/arm64/crypto/Makefile b/arch/arm64/crypto/Makefile index b5edc5918c28..af08508521a3 100644 --- a/arch/arm64/crypto/Makefile +++ b/arch/arm64/crypto/Makefile@@ -24,7 +24,7 @@ obj-$(CONFIG_CRYPTO_CRC32_ARM64_CE) += crc32-ce.o crc32-ce-y:= crc32-ce-core.o crc32-ce-glue.o obj-$(CONFIG_CRYPTO_AES_ARM64_CE) += aes-ce-cipher.o -CFLAGS_aes-ce-cipher.o += -march=armv8-a+crypto +CFLAGS_aes-ce-cipher.o += -march=armv8-a+crypto $(DISABLE_LTO_CLANG) obj-$(CONFIG_CRYPTO_AES_ARM64_CE_CCM) += aes-ce-ccm.o aes-ce-ccm-y := aes-ce-ccm-glue.o aes-ce-ccm-core.o-- 2.15.0.448.gf294e3d99a-goog