Re: [PATCH v2] x86/io: Define readq()/writeq() to use 64-bit type

[Thomas Gleixner]

On Thu, 3 May 2018, Andy Shevchenko wrote:
>  #ifdef CONFIG_X86_64
>  
> -build_mmio_read(readq, "q", unsigned long, "=r", :"memory")
> -build_mmio_read(__readq, "q", unsigned long, "=r", )
> -build_mmio_write(writeq, "q", unsigned long, "r", :"memory")
> -build_mmio_write(__writeq, "q", unsigned long, "r", )
> +build_mmio_read(readq, "q", unsigned long long, "=r", :"memory")
> +build_mmio_read(__readq, "q", unsigned long long, "=r", )
> +build_mmio_write(writeq, "q", unsigned long long, "r", :"memory")
> +build_mmio_write(__writeq, "q", unsigned long long, "r", )

What's wrong with u64 which we use for expressing io access to a 64bit wide
resource?

Thanks,

        tglx