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Re: some question about wmb in mips

To: loody <>
Subject: Re: some question about wmb in mips
From: Ralf Baechle <>
Date: Tue, 31 Aug 2010 16:33:04 +0200
Cc: "Maciej W. Rozycki" <>, Linux MIPS Mailing List <>
In-reply-to: <>
Original-recipient: rfc822;
References: <> <> <> <> <>
User-agent: Mutt/1.5.20 (2009-12-10)
On Mon, Aug 30, 2010 at 09:58:27PM +0800, loody wrote:

> after reading the DMA api document and check the source code.
> I found mips seems not implement "dma map ops", but x86 has implemented it.
> What are they used for and why mips don't implement it?

This is useful for multiple sets of methods on more complicated systems.
Right now we just don't need that.


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