linux-kernel - [PATCH v7 11/12] acpi/numa/hmat: Register HMAT at device

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Date:   Tue, 15 Oct 2019 18:00:25 -0700
From:   Dan Williams <dan.j.williams@...el.com>
To:     mingo@...hat.com
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>, Keith Busch <kbusch@...nel.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        peterz@...radead.org, vishal.l.verma@...el.com,
        ard.biesheuvel@...aro.org, x86@...nel.org,
        linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org
Subject: [PATCH v7 11/12] acpi/numa/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" <rjw@...ysocki.net>
Cc: Len Brown <lenb@...nel.org>
Cc: Keith Busch <kbusch@...nel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Reviewed-by: Dave Hansen <dave.hansen@...ux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.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 8f9a28a870b0..4707eb9dd07b 100644
--- a/drivers/acpi/numa/hmat.c
+++ b/drivers/acpi/numa/hmat.c
@@ -748,4 +748,4 @@ static __init int hmat_init(void)
 	acpi_put_table(tbl);
 	return 0;
 }
-subsys_initcall(hmat_init);
+device_initcall(hmat_init);