On Fri, Jun 10, 2016 at 10:17:19AM +0200, Alexander Gordeev wrote:
> Cc: Andrew Jones <drjones@xxxxxxxxxx>
> Cc: Thomas Huth <thuth@xxxxxxxxxx>
> Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx>
>
> Signed-off-by: Alexander Gordeev <agordeev@xxxxxxxxxx>
> ---
> lib/asm-generic/barrier.h | 21 +++++++++++++++++++++
> lib/asm-generic/io.h | 11 +----------
> lib/ppc64/asm/barrier.h | 4 ++++
> 3 files changed, 26 insertions(+), 10 deletions(-)
> create mode 100644 lib/asm-generic/barrier.h
> create mode 100644 lib/ppc64/asm/barrier.h
Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx>
>
> diff --git a/lib/asm-generic/barrier.h b/lib/asm-generic/barrier.h
> new file mode 100644
> index 000000000000..21c88e9184c5
> --- /dev/null
> +++ b/lib/asm-generic/barrier.h
> @@ -0,0 +1,21 @@
> +#ifndef _ASM_BARRIER_H_
> +#define _ASM_BARRIER_H_
> +/*
> + * asm-generic/barrier.h
> + *
> + * Copyright (C) 2016, Red Hat Inc, Alexander Gordeev <agordeev@xxxxxxxxxx>
> + *
> + * This work is licensed under the terms of the GNU LGPL, version 2.
> + */
> +
> +#ifndef mb
> +#define mb() asm volatile("":::"memory")
> +#endif
> +#ifndef rmb
> +#define rmb() asm volatile("":::"memory")
> +#endif
> +#ifndef wmb
> +#define wmb() asm volatile("":::"memory")
> +#endif
> +
> +#endif /* _ASM_BARRIER_H_ */
> diff --git a/lib/asm-generic/io.h b/lib/asm-generic/io.h
> index 41756dbf01bb..24725c3cd786 100644
> --- a/lib/asm-generic/io.h
> +++ b/lib/asm-generic/io.h
> @@ -11,6 +11,7 @@
> */
> #include "libcflat.h"
> #include "asm/page.h"
> +#include "asm/barrier.h"
>
> #ifndef __raw_readb
> static inline u8 __raw_readb(const volatile void *addr)
> @@ -127,16 +128,6 @@ static inline u64 __bswap64(u64 x)
> ({ u64 __r = !__cpu_is_be() ? __bswap64(x) : ((u64)x); __r; })
> #define cpu_to_be64 be64_to_cpu
>
> -#ifndef mb
> -#define mb() asm volatile("":::"memory")
> -#endif
> -#ifndef rmb
> -#define rmb() asm volatile("":::"memory")
> -#endif
> -#ifndef wmb
> -#define wmb() asm volatile("":::"memory")
> -#endif
> -
> #define readb(addr) \
> ({ u8 __r = __raw_readb(addr); rmb(); __r; })
> #define readw(addr) \
> diff --git a/lib/ppc64/asm/barrier.h b/lib/ppc64/asm/barrier.h
> new file mode 100644
> index 000000000000..5c772ded52e2
> --- /dev/null
> +++ b/lib/ppc64/asm/barrier.h
> @@ -0,0 +1,4 @@
> +#ifndef _ASMPPC64_BARRIER_H_
> +#define _ASMPPC64_BARRIER_H_
> +#include <asm-generic/barrier.h>
> +#endif
> --
> 1.8.3.1
>
> --
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