diff options
| author | Mark Brown <broonie@kernel.org> | 2021-12-14 15:27:12 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2021-12-14 18:12:58 +0000 |
| commit | 9be34be87cc8d1afe3c3bc2e645b4dee512d9eda (patch) | |
| tree | 07006b3125d6a9bcee977cb2367d0b92d2c97819 /arch/arm64/crypto/aes-modes.S | |
| parent | 580b536b504fb13bea6e19e399e207e7253ca30a (diff) | |
| download | linux-9be34be87cc8d1afe3c3bc2e645b4dee512d9eda.tar.bz2 | |
arm64: Add macro version of the BTI instruction
BTI is only available from v8.5 so we need to encode it using HINT in
generic code and for older toolchains. Add an assembler macro based on
one written by Mark Rutland which lets us use the mnemonic and update
the existing users.
Suggested-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20211214152714.2380849-2-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/crypto/aes-modes.S')
| -rw-r--r-- | arch/arm64/crypto/aes-modes.S | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm64/crypto/aes-modes.S b/arch/arm64/crypto/aes-modes.S index b495de22bb38..ff01f0167ba2 100644 --- a/arch/arm64/crypto/aes-modes.S +++ b/arch/arm64/crypto/aes-modes.S @@ -363,15 +363,15 @@ ST5( mov v4.16b, vctr.16b ) adr x16, 1f sub x16, x16, x12, lsl #3 br x16 - hint 34 // bti c + bti c mov v0.d[0], vctr.d[0] - hint 34 // bti c + bti c mov v1.d[0], vctr.d[0] - hint 34 // bti c + bti c mov v2.d[0], vctr.d[0] - hint 34 // bti c + bti c mov v3.d[0], vctr.d[0] -ST5( hint 34 ) +ST5( bti c ) ST5( mov v4.d[0], vctr.d[0] ) 1: b 2f .previous |