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    SubjectRe: [PATCH v4 09/10] acpi/numa/hmat: Register HMAT at device_initcall level
    On Mon, Jun 24, 2019 at 8:34 PM Dan Williams <dan.j.williams@intel.com> wrote:
    >
    > In preparation for registering device-dax instances for accessing EFI
    > specific-purpose memory, arrange for the HMAT registration to occur
    > later in the init process. Critically HMAT initialization needs to occur
    > after e820__reserve_resources_late() which is the point at which the
    > iomem resource tree is populated with "Application Reserved"
    > (IORES_DESC_APPLICATION_RESERVED). e820__reserve_resources_late()
    > happens at subsys_initcall time.
    >
    > Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
    > Cc: Len Brown <lenb@kernel.org>
    > Cc: Keith Busch <keith.busch@intel.com>
    > Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
    > Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
    > Signed-off-by: Dan Williams <dan.j.williams@intel.com>

    Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

    > ---
    > drivers/acpi/numa/hmat.c | 2 +-
    > 1 file changed, 1 insertion(+), 1 deletion(-)
    >
    > diff --git a/drivers/acpi/numa/hmat.c b/drivers/acpi/numa/hmat.c
    > index 2c220cb7b620..1d329c4af3bf 100644
    > --- a/drivers/acpi/numa/hmat.c
    > +++ b/drivers/acpi/numa/hmat.c
    > @@ -671,4 +671,4 @@ static __init int hmat_init(void)
    > acpi_put_table(tbl);
    > return 0;
    > }
    > -subsys_initcall(hmat_init);
    > +device_initcall(hmat_init);
    >

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