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6a5b78b32d
Remove the deprecated (pre-ARMv7) compat barriers as they would not be used
on an ARMv8 system.
Fixes: a7f71a2c89 ("arm64: compat: Add vDSO")
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mips@vger.kernel.org
Cc: linux-kselftest@vger.kernel.org
Cc: Will Deacon <will.deacon@arm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Mark Salyzyn <salyzyn@android.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Huw Davies <huw@codeweavers.com>
Cc: Shijith Thotton <sthotton@marvell.com>
Cc: Andre Przywara <andre.przywara@arm.com>
Link: https://lkml.kernel.org/r/20190624140018.GD29120@arrakis.emea.arm.com
45 lines
922 B
C
45 lines
922 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2018 ARM Limited
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*/
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#ifndef __COMPAT_BARRIER_H
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#define __COMPAT_BARRIER_H
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#ifndef __ASSEMBLY__
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/*
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* Warning: This code is meant to be used with
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* ENABLE_COMPAT_VDSO only.
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*/
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#ifndef ENABLE_COMPAT_VDSO
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#error This header is meant to be used with ENABLE_COMPAT_VDSO only
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#endif
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#ifdef dmb
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#undef dmb
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#endif
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#define dmb(option) __asm__ __volatile__ ("dmb " #option : : : "memory")
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#if __LINUX_ARM_ARCH__ >= 8
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#define aarch32_smp_mb() dmb(ish)
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#define aarch32_smp_rmb() dmb(ishld)
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#define aarch32_smp_wmb() dmb(ishst)
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#else
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#define aarch32_smp_mb() dmb(ish)
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#define aarch32_smp_rmb() aarch32_smp_mb()
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#define aarch32_smp_wmb() dmb(ishst)
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#endif
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#undef smp_mb
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#undef smp_rmb
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#undef smp_wmb
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#define smp_mb() aarch32_smp_mb()
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#define smp_rmb() aarch32_smp_rmb()
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#define smp_wmb() aarch32_smp_wmb()
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#endif /* !__ASSEMBLY__ */
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#endif /* __COMPAT_BARRIER_H */
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