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alistair23-linux/arch/arm64/include/asm/vdso
Vincenzo Frascino 0df2c90eba arm64: vdso32: Detect binutils support for dmb ishld
Older versions of binutils (prior to 2.24) do not support the "ISHLD"
option for memory barrier instructions, which leads to a build failure
when assembling the vdso32 library.

Add a compilation time mechanism that detects if binutils supports those
instructions and configure the kernel accordingly.

Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Reported-by: Will Deacon <will@kernel.org>
Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>
2019-10-07 11:07:16 +01:00
..
compat_barrier.h arm64: vdso32: Detect binutils support for dmb ishld 2019-10-07 11:07:16 +01:00
compat_gettimeofday.h arm64: compat: vdso: Use legacy syscalls as fallback 2019-07-31 00:09:10 +02:00
gettimeofday.h arm64: Fix __arch_get_hw_counter() implementation 2019-06-26 14:26:54 +02:00
vsyscall.h arm64: vdso: Substitute gettimeofday() with C implementation 2019-06-22 21:21:06 +02:00