Re: [Xen-devel] [Minios-devel] [PATCH MINI-OS v2] xenbus: notify the other end when necessary

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>]

Samuel Thibault, le Mon 26 Oct 2015 18:11:04 +0100, a écrit :
> diff --git a/tools/ocaml/libs/xb/xb.ml b/tools/ocaml/libs/xb/xb.ml
> index 50944b5..33298d2 100644
> --- a/tools/ocaml/libs/xb/xb.ml
> +++ b/tools/ocaml/libs/xb/xb.ml
> @@ -91,10 +91,12 @@ let write_fd back con s len =
>       Unix.write back.fd s 0 len
>  
>  let write_mmap back con s len =
> -     let ws = Xs_ring.write back.mmap s len in
> -     if ws > 0 then
> +     let ws = ref (Xs_ring.write back.mmap s len) in
> +     if !ws < len then
> +             ws := !ws + Xs_ring.write back.mmap (String.sub s !ws 
> (len-!ws)) (len-!ws);
> +     if !ws > 0 then
>               back.eventchn_notify ();
> -     ws
> +     !ws
>  
>  let write con s len =
>       match con.backend with

Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
Not-tested-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>
Not-even-compiled-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxx>

Samuel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel