Messages in this thread | | | From | "David S. Miller" <> | Date | Mon, 4 Jun 2001 19:03:01 -0700 (PDT) | Subject | Re: Missing cache flush. |
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Jeff Garzik writes: > David Woodhouse wrote: > > I was pointed at Documentation/DMA-mapping.txt but that doesn't seem very > > helpful - it's very PCI-specific, and a quick perusal of pci_dma_sync() on > > i386 shows that it doesn't do what's required anyway. > > What should it do on i386? mb()?
The x86 doesn't have dumb caches, therefore it really doesn't need to flush anything. Maybe a mb(), but that is it.
Later, David S. Miller davem@redhat.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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