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| author | Linus Walleij <linus.walleij@linaro.org> | 2021-03-25 17:13:04 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2021-03-25 21:05:46 +0300 |
| commit | 4f30ba1cce36d413c46097c1f3f96891c662a6d6 (patch) | |
| tree | 0a9b073f1ebb4ef388f262c6b940cc1b034a545d | |
| parent | 9eef29d8c31bdb8d6254b99e3dc741c75832fd6b (diff) | |
| download | linux-4f30ba1cce36d413c46097c1f3f96891c662a6d6.tar.xz | |
arm64: barrier: Remove spec_bar() macro
The spec_bar() macro was introduced in
commit bd4fb6d270bc ("arm64: Add support for SB barrier and patch in over DSB; ISB sequences")
as a way for C to insert a speculation barrier and was then
used in one single place: set_fs().
Later on
commit 3d2403fd10a1 ("arm64: uaccess: remove set_fs()")
deleted set_fs() altogether and as noted in the commit
on the new path the regular sb() assembly macro will
be used.
Delete the remnant.
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210325141304.1607595-1-linus.walleij@linaro.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
| -rw-r--r-- | arch/arm64/include/asm/barrier.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h index c3009b0e5239..bab29932d21b 100644 --- a/arch/arm64/include/asm/barrier.h +++ b/arch/arm64/include/asm/barrier.h @@ -25,10 +25,6 @@ #define psb_csync() asm volatile("hint #17" : : : "memory") #define csdb() asm volatile("hint #20" : : : "memory") -#define spec_bar() asm volatile(ALTERNATIVE("dsb nsh\nisb\n", \ - SB_BARRIER_INSN"nop\n", \ - ARM64_HAS_SB)) - #ifdef CONFIG_ARM64_PSEUDO_NMI #define pmr_sync() \ do { \ |