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x86/retpoline/crypto: Convert crypto assembler indirect jumps

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commit 9697fa39ef upstream.

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
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Woodhouse
2018-01-11 21:46:27 +00:00
committed by Greg Kroah-Hartman
parent 8f96937ee3
commit 2adc2f7444
4 changed files with 9 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
arch/x86/crypto/aesni-intel_asm.S
View File

@@ -32,6 +32,7 @@
#include <linux/linkage.h>
#include <asm/inst.h>
#include <asm/frame.h>
#include <asm/nospec-branch.h>
/*
* The following macros are used to move an (un)aligned 16 byte value to/from
@@ -2734,7 +2735,7 @@ ENTRY(aesni_xts_crypt8)
pxor INC, STATE4
movdqu IV, 0x30(OUTP)
call *%r11
CALL_NOSPEC %r11
movdqu 0x00(OUTP), INC
pxor INC, STATE1
@@ -2779,7 +2780,7 @@ ENTRY(aesni_xts_crypt8)
_aesni_gf128mul_x_ble()
movups IV, (IVP)
call *%r11
CALL_NOSPEC %r11
movdqu 0x40(OUTP), INC
pxor INC, STATE1

3
arch/x86/crypto/camellia-aesni-avx-asm_64.S
View File

@@ -17,6 +17,7 @@
#include <linux/linkage.h>
#include <asm/frame.h>
#include <asm/nospec-branch.h>
#define CAMELLIA_TABLE_BYTE_LEN 272
@@ -1224,7 +1225,7 @@ camellia_xts_crypt_16way:
vpxor 14 * 16(%rax), %xmm15, %xmm14;
vpxor 15 * 16(%rax), %xmm15, %xmm15;
call *%r9;
CALL_NOSPEC %r9;
addq $(16 * 16), %rsp;

3
arch/x86/crypto/camellia-aesni-avx2-asm_64.S
View File

@@ -12,6 +12,7 @@
#include <linux/linkage.h>
#include <asm/frame.h>
#include <asm/nospec-branch.h>
#define CAMELLIA_TABLE_BYTE_LEN 272
@@ -1337,7 +1338,7 @@ camellia_xts_crypt_32way:
vpxor 14 * 32(%rax), %ymm15, %ymm14;
vpxor 15 * 32(%rax), %ymm15, %ymm15;
call *%r9;
CALL_NOSPEC %r9;
addq $(16 * 32), %rsp;

3
arch/x86/crypto/crc32c-pcl-intel-asm_64.S
View File

@@ -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: