OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ACPI: HMAT: Fix handling of changes from ACPI 6.2 to ACPI 6.3 

In ACPI 6.3, the Memory Proximity Domain Attributes Structure
changed substantially.  One of those changes was that the flag
for "Memory Proximity Domain field is valid" was deprecated.

This was because the field "Proximity Domain for the Memory"
became a required field and hence having a validity flag makes
no sense.

So the correct logic is to always assume the field is there.
Current code assumes it never is.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Jonathan Cameron 2020-09-30 22:05:45 +08:00 committed by Rafael J. Wysocki
parent 01aabca2fd
commit 2c5b9bde95
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/acpi/numa/hmat.c
View File

@ -424,7 +424,8 @@ static int __init hmat_parse_proximity_domain(union acpi_subtable_headers *heade
pr_info("HMAT: Memory Flags:%04x Processor Domain:%u Memory Domain:%u\n",
p->flags, p->processor_PD, p->memory_PD);
if (p->flags & ACPI_HMAT_MEMORY_PD_VALID && hmat_revision == 1) {
if ((hmat_revision == 1 && p->flags & ACPI_HMAT_MEMORY_PD_VALID) ||
hmat_revision > 1) {
target = find_mem_target(p->memory_PD);
if (!target) {
pr_debug("HMAT: Memory Domain missing from SRAT\n");