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    Subjectpatch "x86: MOVE PCI IO ECS code to x86/pci" breaks CPU hotplug
    Converting __cpuinit functions called out of init_amd() (and similar others)
    to __init (and making them subject of xxx_initcall() handling isn't valid, as
    they would no longer be called for hot plugged CPUs.

    Further, since it's likely that in virtualized environments the MSR write
    would at best be ignored, I'd also recommend using the fault-safe
    accessors here *and* check that the bit actually got set before setting
    PCI_HAS_IO_ECS (one would obviously have to BUG() when hot-plugged
    CPUs fail to set the bit when those available at boot successfully did so).


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      Last update: 2008-08-21 14:47    [W:0.021 / U:14.236 seconds]
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