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Date: Wed, 02 May 2007 16:30:36 -0400 From: Jeff Garzik <jeff@...zik.org> To: Michael Chan <mchan@...adcom.com> CC: David Miller <davem@...emloft.net>, netdev <netdev@...r.kernel.org> Subject: Re: [PATCH 3/20][BNX2]: Add 40-bit DMA workaround for 5708. Michael Chan wrote: > If CONFIG_HIGHMEM is not set, > wouldn't the device get > 32-bit DMA addresses that it cannot handle? No -- presuming your PCI device's DMA mask is set correctly. > I know that there are 64-bit systems without IOMMUs. That's why we need [...] > needed or not. These systems without IOMMU must support 32-bit only > cards, right? How do they do that if they are not using CONFIG_HIGHMEM? pci_set_dma_mask() Jeff - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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