netdev - Re: [PATCH net v3.16]r8169: Keep minimum barrier on coherent allocation

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Message-ID: <20160301205032.GA30997@electric-eye.fr.zoreil.com>
Date:	Tue, 1 Mar 2016 21:50:32 +0100
From:	Francois Romieu <romieu@...zoreil.com>
To:	Corcodel Marian <asd@...ian1000.go.ro>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH net v3.16]r8169: Keep minimum barrier on coherent
 allocation

Corcodel Marian <asd@...ian1000.go.ro> :
> This patch add 256 Bytes barrier on rx/tx coherent allocations.

It does not make much sense unless you want to use a non power of two
value for NUM_.._DESC or a value < 16 with some strange kernel where
dma_alloc_coherent does not provide page alignment.

-- 
Ueimor