src/patches/suse-2.6.27.31/patches.arch/acpi_srat-pxm-rev-store.patch

   1 From: Kurt Garloff <garloff@suse.de>
   2 Subject: Store SRAT table revision
   3 References: bnc#503038
   4
   5 In SRAT v1, we had 8bit proximity domain (PXM) fields; SRAT v2 provides
   6 32bits for these. The new fields were reserved before.
   7 According to the ACPI spec, the OS must disregrard reserved fields.
   8 In order to know whether or not, we must know what version the SRAT
   9 table has.
  10
  11 This patch stores the SRAT table revision for later consumption
  12 by arch specific __init functions.
  13
  14 This is patch 1/3.
  15
  16 Signed-off-by: Kurt Garloff <garloff@suse.de>
  17
  18 ---
  19  drivers/acpi/numa.c      |    3 +++
  20  include/acpi/acpi_numa.h |    1 +
  21  2 files changed, 4 insertions(+)
  22
  23 --- a/drivers/acpi/numa.c
  24 +++ b/drivers/acpi/numa.c
  25 @@ -43,6 +43,8 @@ static int pxm_to_node_map[MAX_PXM_DOMAI
  26  static int node_to_pxm_map[MAX_NUMNODES]
  27                                 = { [0 ... MAX_NUMNODES - 1] = PXM_INVAL };
  28
  29 +unsigned char acpi_srat_revision __initdata;
  30 +
  31  int pxm_to_node(int pxm)
  32  {
  33         if (pxm < 0)
  34 @@ -225,6 +227,7 @@ static int __init acpi_parse_srat(struct
  35                 return -EINVAL;
  36
  37         srat = (struct acpi_table_srat *)table;
  38 +       acpi_srat_revision = srat->header.revision;
  39
  40         return 0;
  41  }
  42 --- a/include/acpi/acpi_numa.h
  43 +++ b/include/acpi/acpi_numa.h
  44 @@ -15,6 +15,7 @@ extern int pxm_to_node(int);
  45  extern int node_to_pxm(int);
  46  extern void __acpi_map_pxm_to_node(int, int);
  47  extern int acpi_map_pxm_to_node(int);
  48 +extern unsigned char acpi_srat_revision;
  49
  50  #endif                         /* CONFIG_ACPI_NUMA */
  51  #endif                         /* __ACP_NUMA_H */