Messages in this thread | | | Date | Tue, 11 Jun 2002 08:57:11 -0700 | From | William Jhun <> | Subject | Re: PCI DMA to small buffers on cache-incoherent arch |
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On Tue, Jun 11, 2002 at 12:43:05AM -0700, David S. Miller wrote: > From: "David S. Miller" <davem@redhat.com> > Date: Tue, 11 Jun 2002 00:36:25 -0700 (PDT) > > The DMA_ALIGN attribute doesn't work, on some systems the PCI > cacheline size is determined at boot time not compile time. > > Another note, it could be per-PCI controller what this cacheline size > is. We'll need to pass in a pdev to the alignment interfaces to > do this correctly. > > So none of this can be done at compile time folks.
Why is this a problem? So you just make a static inline that takes the pdev and does the Right Thing at runtime... It's implementation- dependent whether it's a compile-time macro or a more elaborate inline... - 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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