You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
53 lines
1.5 KiB
53 lines
1.5 KiB
From: Kurt Garloff <garloff@suse.de>
|
|
Subject: Store SRAT table revision
|
|
References: bnc#503038
|
|
Patch-mainline: not yet
|
|
|
|
In SRAT v1, we had 8bit proximity domain (PXM) fields; SRAT v2 provides
|
|
32bits for these. The new fields were reserved before.
|
|
According to the ACPI spec, the OS must disregrard reserved fields.
|
|
In order to know whether or not, we must know what version the SRAT
|
|
table has.
|
|
|
|
This patch stores the SRAT table revision for later consumption
|
|
by arch specific __init functions.
|
|
|
|
This is patch 1/3.
|
|
|
|
Signed-off-by: Kurt Garloff <garloff@suse.de>
|
|
|
|
---
|
|
drivers/acpi/numa.c | 3 +++
|
|
include/acpi/acpi_numa.h | 1 +
|
|
2 files changed, 4 insertions(+)
|
|
|
|
--- a/drivers/acpi/numa.c
|
|
+++ b/drivers/acpi/numa.c
|
|
@@ -45,6 +45,8 @@ static int pxm_to_node_map[MAX_PXM_DOMAI
|
|
static int node_to_pxm_map[MAX_NUMNODES]
|
|
= { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
|
|
|
|
+unsigned char acpi_srat_revision __initdata;
|
|
+
|
|
int pxm_to_node(int pxm)
|
|
{
|
|
if (pxm < 0)
|
|
@@ -259,6 +261,7 @@ static int __init acpi_parse_srat(struct
|
|
return -EINVAL;
|
|
|
|
srat = (struct acpi_table_srat *)table;
|
|
+ acpi_srat_revision = srat->header.revision;
|
|
|
|
return 0;
|
|
}
|
|
--- a/include/acpi/acpi_numa.h
|
|
+++ b/include/acpi/acpi_numa.h
|
|
@@ -15,6 +15,7 @@ extern int pxm_to_node(int);
|
|
extern int node_to_pxm(int);
|
|
extern void __acpi_map_pxm_to_node(int, int);
|
|
extern int acpi_map_pxm_to_node(int);
|
|
+extern unsigned char acpi_srat_revision;
|
|
|
|
#endif /* CONFIG_ACPI_NUMA */
|
|
#endif /* __ACP_NUMA_H */
|