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    SubjectRe: [PATCH RFC] x86/acpi: don't ignore I/O APICs just because there's no local APIC
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    doesn't XEN support per cpu irq vector?

    got sth from XEN 3.3 / SLES 11

    igb 0000:81:00.0: PCI INT A -> GSI 95 (level, low) -> IRQ 95
    igb 0000:81:00.0: setting latency timer to 64
    igb 0000:81:00.0: Intel(R) Gigabit Ethernet Network Connection
    igb 0000:81:00.0: eth9: (PCIe:2.5Gb/s:Width x4) 00:21:28:3a:d8:0e
    igb 0000:81:00.0: eth9: PBA No: ffffff-0ff
    igb 0000:81:00.0: Using MSI-X interrupts. 4 rx queue(s), 4 tx queue(s)
    vendor=8086 device=3420
    (XEN) irq.c:847: dom0: invalid pirq 94 or vector -28
    igb 0000:81:00.1: PCI INT B -> GSI 94 (level, low) -> IRQ 94
    igb 0000:81:00.1: setting latency timer to 64
    (XEN) physdev.c:87: dom0: map irq with wrong vector -28
    map irq failed
    (XEN) physdev.c:87: dom0: map irq with wrong vector -28
    map irq failed

    the system need a lot of MSI-X normally.. with current mainline tree
    kernel, it will need about 360 irq...

    YH


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