Re: [PATCH][RFC] asm-generic:remove calling flush_write_buffers()in dma_sync_*_for_cpu

[Joerg Roedel]

On Mon, Jun 29, 2009 at 08:10:26PM +0100, Alan Cox wrote:
> > X86_OOSTORE is defined for (MWINCHIP3D || MWINCHIPC6) && MTRR. I am not sure if
> > these chips have sfence.
> > It would also help to know what OOSTORE exactly means in the context of that
> > chip.
> 
> Non uncached stores may be visible out of order on the bus.

Ah ok, thanks. I think we should document that somewhere. A help text for the
Kconfig entry comes to my mind for that purpose. I will send a patch for this.

	Joerg

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