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[07/10] crypto: x86/crc32c - Use RIP-relative addressing

Message ID 20230408152722.3975985-8-ardb@kernel.org (mailing list archive)
State Superseded
Delegated to: Herbert Xu
Headers show
Series crypto: x86 - avoid absolute references | expand

Commit Message

Ard Biesheuvel April 8, 2023, 3:27 p.m. UTC 
Prefer RIP-relative addressing where possible, which removes the need
for boot time relocation fixups.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 arch/x86/crypto/crc32c-pcl-intel-asm_64.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
index ec35915f0901a087..5f843dce77f1de66 100644
--- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
+++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
@@ -168,7 +168,8 @@  continue_block:
 	xor     crc2, crc2
 
 	## branch into array
-	mov	jump_table(,%rax,8), %bufp
+	leaq	jump_table(%rip), %bufp
+	mov	(%bufp,%rax,8), %bufp
 	JMP_NOSPEC bufp
 
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