[v4,09/10] acpi/numa/hmat: Register HMAT at device_initcall level
diff mbox series

Message ID 156140042119.2951909.7727308817426477621.stgit@dwillia2-desk3.amr.corp.intel.com
State New, archived
Headers show
Series
  • EFI Specific Purpose Memory Support
Related show

Commit Message

Dan Williams June 24, 2019, 6:20 p.m. UTC
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>
---
 drivers/acpi/numa/hmat.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Rafael J. Wysocki July 3, 2019, 11:12 a.m. UTC | #1
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);
>

Patch
diff mbox series

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);