[kvmtool PATCH 2/6] Add __KERNEL_DIV_ROUND_UP() macro

[Will Deacon]

On Mon, Jan 27, 2025 at 06:54:20PM +0530, Anup Patel wrote:
> The latest virtio_pci.h header from Linux-6.13 kernel requires
> __KERNEL_DIV_ROUND_UP() macro so define it conditionally in
> linux/kernel.h.
> 
> Signed-off-by: Anup Patel <apatel at ventanamicro.com>
> ---
>  include/linux/kernel.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/include/linux/kernel.h b/include/linux/kernel.h
> index 6c22f1c..df42d63 100644
> --- a/include/linux/kernel.h
> +++ b/include/linux/kernel.h
> @@ -8,6 +8,9 @@
>  #define round_down(x, y)	((x) & ~__round_mask(x, y))
>  
>  #define DIV_ROUND_UP(n,d) (((n) + (d) - 1) / (d))
> +#ifndef __KERNEL_DIV_ROUND_UP
> +#define __KERNEL_DIV_ROUND_UP(n,d)	DIV_ROUND_UP(n,d)
> +#endif

I'm happy to take this for now, but perhaps we should be pulling
in the uapi const.h header instead of rolling this ourselves? Ideally,
kernel.h would disappear altogether.

Will