Hi All, I found a strange thing on ia64 platform. When I allocate pages using __get_free_pages() with GFP_DMA, sometimes the physical addresses of allocated pages fall beyond 4G. I am working on a device driver where the device does not support addresses above 4G and hence I have to implement bounce buffers. The bounce buffer code works fine on other architectures. But since I get 4G+ addresses on ia64, the code would not work. Any idea why should this happen? And any workaround if I _NEED_ addresses below 4G. The machine has 2G of physical memory. The dma mask for the driver is set to 64 bits using pci_set_dma_mask(). Thanks in advance, Adhiraj. - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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