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Date:   Thu, 30 May 2019 15:59:58 -0700
From:   Dan Williams <>
Cc:     "Rafael J. Wysocki" <>,
        Len Brown <>,
        Keith Busch <>,
        Jonathan Cameron <>,,,,,,
Subject: [PATCH v2 7/8] acpi/hmat: Register HMAT at device_initcall level

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" <>
Cc: Len Brown <>
Cc: Keith Busch <>
Cc: Jonathan Cameron <>
Signed-off-by: Dan Williams <>
 drivers/acpi/hmat.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/hmat.c b/drivers/acpi/hmat.c
index 2c220cb7b620..1d329c4af3bf 100644
--- a/drivers/acpi/hmat.c
+++ b/drivers/acpi/hmat.c
@@ -671,4 +671,4 @@ static __init int hmat_init(void)
 	return 0;

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