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linux/arch
Mark Brown 577972f821 UPSTREAM: 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>

Bug: 233652475
Link: https://lore.kernel.org/all/20211214152714.2380849-1-broonie@kernel.org/
(cherry picked from commit 9be34be87c)
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Change-Id: I961472f606d6eb34f49832b96f69e2156419da79
2022-09-07 06:51:23 +00:00
..
2022-08-11 15:57:56 +02:00