diff options
| author |   David Woodhouse <dwmw@amazon.co.uk> | 2018-01-11 21:46:27 +0000 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2018-01-12 00:14:29 +0100 |
| commit | 9697fa39efd3fc3692f2949d4045f393ec58450b (patch) | |
| tree | a95b40eeca174c545bd1ddf60eefb54b1759db5a /arch/x86/crypto/crc32c-pcl-intel-asm_64.S | |
| parent | x86/spectre: Add boot time option to select Spectre v2 mitigation (diff) | |
| download | linux-dev-9697fa39efd3fc3692f2949d4045f393ec58450b.tar.xz linux-dev-9697fa39efd3fc3692f2949d4045f393ec58450b.zip | |
x86/retpoline/crypto: Convert crypto assembler indirect jumps
Convert all indirect jumps in crypto assembler code to use non-speculative
sequences when CONFIG_RETPOLINE is enabled.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: gnomes@lxorguk.ukuu.org.uk
Cc: Rik van Riel <riel@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: thomas.lendacky@amd.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Kees Cook <keescook@google.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Greg Kroah-Hartman <gregkh@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Link: https://lkml.kernel.org/r/1515707194-20531-6-git-send-email-dwmw@amazon.co.uk
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/crypto/crc32c-pcl-intel-asm_64.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S index 7a7de27c6f41..d9b734d0c8cc 100644 --- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S +++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S @@ -45,6 +45,7 @@ #include <asm/inst.h> #include <linux/linkage.h> +#include <asm/nospec-branch.h> ## ISCSI CRC 32 Implementation with crc32 and pclmulqdq Instruction @@ -172,7 +173,7 @@ continue_block: movzxw (bufp, %rax, 2), len lea crc_array(%rip), bufp lea (bufp, len, 1), bufp - jmp *bufp + JMP_NOSPEC bufp ################################################################ ## 2a) PROCESS FULL BLOCKS: |