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    SubjectRe: Fix "buggy BIOS check" when CPUs are hot removed
    On Fri, 04 Apr 2008 16:48:44 -0700 Alok Kataria <akataria@vmware.com> wrote:

    > Fixes a BUG in ACPI hotplugging.
    >
    > processor_device_array[pr->id] needs to be set to NULL when removing a
    > CPU. Else the "buggy BIOS check" in acpi_processor_start mistakenly
    > fires when a CPU is removed from the system and then later re-added.
    >
    > Signed-off-by: Alok N Kataria <akataria@vmware.com>
    > Signed-off-by: Dan Arai <arai@vmware.com>

    I assume this is also needed in 2.6.24.x?

    > diff --git a/drivers/acpi/processor_core.c
    > b/drivers/acpi/processor_core.c
    > index 61450f4..0f95f26 100644
    > --- a/drivers/acpi/processor_core.c
    > +++ b/drivers/acpi/processor_core.c
    > @@ -828,6 +828,7 @@ static int acpi_processor_remove(struct acpi_device
    > *device, int type)
    > }
    >
    > processors[pr->id] = NULL;
    > + processor_device_array[pr->id] = NULL;
    >
    > kfree(pr);
    >

    That set a new record for patch-manglement.


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