[PATCH] Add membar to bus dma PREWRITE operations
Marcel Moolenaar
marcel at xcllnt.net
Sat Sep 3 21:03:48 PDT 2005
On Sep 2, 2005, at 10:24 AM, John Baldwin wrote:
> --- //depot/vendor/freebsd/src/sys/alpha/alpha/busdma_machdep.c
> 2005/05/25
> 07:26:16
> +++ //depot/user/jhb/acpipci/alpha/alpha/busdma_machdep.c
> 2005/08/18 17:55:22
> @@ -891,6 +891,10 @@
> }
> }
> }
> +
> + /* Ensure any pending writes have drained. */
> + if (op & (BUS_DMASYNC_PREWRITE))
> + alpha_mb();
> }
>
> static void
Ok on -current.
--
Marcel Moolenaar USPA: A-39004 marcel at xcllnt.net
More information about the freebsd-alpha
mailing list