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    SubjectRe: [PATCH] x86_64: fix dma_alloc_pages

    * Yinghai Lu <Yinghai.Lu@Sun.COM> wrote:

    > one system with two nodes and two ht links on every node. the bios
    > already have _pxm for two links.
    >
    > when no ram installed for node1 will have panic.
    >
    > reason: the device on second chain will get node = 1 from
    > dev_to_node...via pci_acpi_scan_root. but node1 doesn't have ram
    > installed. in dma_alloc_pages it will pass check with
    > first_node(node_online_map)... and will have problem with
    > __alloc_pages in alloc_pages_node.
    >
    > this patch will check the if the node is online..., if not will get
    > numa_node_id to get one node with ram.

    thanks, applied.

    Ingo


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