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ACPI: HMAT: preserve hmat_adist_nb notifier block

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Remove __meminitdata from hmat_adist_nb declaration preserving it even
when CONFIG_MEMORY_HOTPLUG is not set. Otherwise further notifier
registrations using register_mt_adistance_algorithm() will find a
notifier chain likely corrupted.

This is the case when cxl_region_probe() calls
register_mt_adistance_algorithm() what can happen when CXL regions
are dynamically created at any time from Type3 device(s) or when a Type2
device is initialized at its driver probe.

Fixes: 3718c02dbd ("acpi, hmat: calculate abstract distance with HMAT")
Signed-off-by: Alejandro Lucero <alucerop@amd.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
[ rjw: Subject tweak ]
Link: https://patch.msgid.link/20260716181114.35962-2-alejandro.lucero-palau@amd.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Alejandro Lucero 2026-07-16 19:11:14 +01:00 committed by Rafael J. Wysocki
parent 047c834d93
commit b1c75a77d4
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/numa/hmat.c
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@ -995,7 +995,7 @@ static int hmat_calculate_adistance(struct notifier_block *self,
return NOTIFY_STOP;
}
static struct notifier_block hmat_adist_nb __meminitdata = {
static struct notifier_block hmat_adist_nb = {
.notifier_call = hmat_calculate_adistance,
.priority = 100,
};