Re: [PATCH] use mmiowb in tg3.c

netdev

Re: [PATCH] use mmiowb in tg3.c

To:	akepner@xxxxxxx
Subject:	Re: [PATCH] use mmiowb in tg3.c
From:	Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Date:	Fri, 22 Oct 2004 12:07:24 +1000
Cc:	"David S. Miller" <davem@xxxxxxxxxxxxx>, Jesse Barnes <jbarnes@xxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxx>, Linux Kernel list <linux-kernel@xxxxxxxxxxxxxxx>, netdev@xxxxxxxxxxx, Jeff Garzik <jgarzik@xxxxxxxxx>, gnb@xxxxxxx
In-reply-to:	<Pine.LNX.4.33.0410211826480.392-100000@xxxxxxxxxxxxxxxxxxxxx>
References:	<Pine.LNX.4.33.0410211826480.392-100000@xxxxxxxxxxxxxxxxxxxxx>
Sender:	netdev-bounce@xxxxxxxxxxx

On Fri, 2004-10-22 at 11:33, akepner@xxxxxxx wrote:
> On Fri, 22 Oct 2004, Benjamin Herrenschmidt wrote:
> 
> > ... 
> > Typically, our normal "light" write barrier doesn't reorder between 
> > cacheable
> > and non-cacheable (MMIO) stores, which is why we had to put some heavy sync
> > barrier in our MMIO writes macros.
> > ...
> 
> Do you mean "impose order" rather than "reorder" here? 

Right.

Ben.

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[PATCH] use mmiowb in tg3.c, Jesse Barnes Re: [PATCH] use mmiowb in tg3.c, David S. Miller Re: [PATCH] use mmiowb in tg3.c, Benjamin Herrenschmidt Re: [PATCH] use mmiowb in tg3.c, akepner Re: [PATCH] use mmiowb in tg3.c, Benjamin Herrenschmidt <= Re: [PATCH] use mmiowb in tg3.c, Jesse Barnes Re: [PATCH] use mmiowb in tg3.c, Paul Mackerras [PATCH] use mmiowb in tg3_poll, akepner

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