On Fri, Jun 1, 2012 at 10:31 AM, Sjur BRENDELAND <[email protected]> wrote: > if (virtio_has_feature(vdev, VIRTIO_CONSOLE_USE_DMA_MEM)) { > dma_addr_t dma; > buf = dma_alloc_coherent(dev, size, &dma, GFP_KERNEL); > } else > buf = kmalloc(count, GFP_KERNEL);
Something along those lines is also needed for remote processors which access memory via an IOMMU (e.g. OMAP4's M3 and DSP). Allocating the memory via the DMA API will seamlessly configure the relevant IOMMU as needed, and will make the buffers accessible to the remote processors. Thanks, Ohad. _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
