Re: [PATCH] use mmiowb in tg3.c

netdev

Re: [PATCH] use mmiowb in tg3.c

To:	Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Subject:	Re: [PATCH] use mmiowb in tg3.c
From:	<akepner@xxxxxxx>
Date:	Thu, 21 Oct 2004 18:33:22 -0700 (PDT)
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:	<1098407804.6071.22.camel@gaston>
Sender:	netdev-bounce@xxxxxxxxxxx

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? 

-- 
Arthur

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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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