diff options
Diffstat (limited to 'usr/src/uts/i86pc/os/lgrpplat.c')
| -rw-r--r-- | usr/src/uts/i86pc/os/lgrpplat.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/usr/src/uts/i86pc/os/lgrpplat.c b/usr/src/uts/i86pc/os/lgrpplat.c index b46bbf849d..981398970e 100644 --- a/usr/src/uts/i86pc/os/lgrpplat.c +++ b/usr/src/uts/i86pc/os/lgrpplat.c @@ -2799,7 +2799,11 @@ lgrp_plat_process_sli(uint32_t domain_id, uchar_t *sli_info, /* * Read ACPI System Resource Affinity Table (SRAT) to determine which CPUs * and memory are local to each other in the same NUMA node and return number - * of nodes + * of nodes. + * + * The SRAT table pointer is populated during bootup by + * build_firmware_properties() in fakebop.c. Several motherboard and BIOS + * manufacturers are guilty of not having a SRAT table. */ static int lgrp_plat_process_srat(ACPI_TABLE_SRAT *tp, ACPI_TABLE_MSCT *mp, @@ -2816,9 +2820,15 @@ lgrp_plat_process_srat(ACPI_TABLE_SRAT *tp, ACPI_TABLE_MSCT *mp, /* * Nothing to do when no SRAT or disabled */ - if (tp == NULL || !lgrp_plat_srat_enable) + if (!lgrp_plat_srat_enable) return (-1); + if (tp == NULL) { + cmn_err(CE_WARN, "Couldn't read ACPI SRAT table from BIOS. " + "lgrp support will be limited to one group.\n"); + return (-1); + } + /* * Try to get domain information from MSCT table. * ACPI4.0: OSPM will use information provided by the MSCT only |