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| author |   Mike Travis <mike.travis@hpe.com> | 2020-11-05 16:27:39 -0600 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2020-11-07 11:17:39 +0100 |
| commit | 1aec69ae56be28b5fd3c9daead5f3840c30153c8 (patch) | |
| tree | 4ab61b6ec4318c5109e883a49c5aacf5f3eed723 /arch | |
| parent | x86/speculation: Allow IBPB to be conditionally enabled on CPUs with always-on STIBP (diff) | |
| download | linux-dev-1aec69ae56be28b5fd3c9daead5f3840c30153c8.tar.xz linux-dev-1aec69ae56be28b5fd3c9daead5f3840c30153c8.zip | |
x86/platform/uv: Fix missing OEM_TABLE_ID
Testing shows a problem in that the OEM_TABLE_ID was missing for
hubless systems. This is used to determine the APIC type (legacy or
extended). Add the OEM_TABLE_ID to the early hubless processing.
Fixes: 1e61f5a95f191 ("Add and decode Arch Type in UVsystab")
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201105222741.157029-2-mike.travis@hpe.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/apic/x2apic_uv_x.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index 714233cee0b5..a5794794ea59 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -366,7 +366,7 @@ static int __init early_get_arch_type(void) return ret; } -static int __init uv_set_system_type(char *_oem_id) +static int __init uv_set_system_type(char *_oem_id, char *_oem_table_id) { /* Save OEM_ID passed from ACPI MADT */ uv_stringify(sizeof(oem_id), oem_id, _oem_id); @@ -394,6 +394,9 @@ static int __init uv_set_system_type(char *_oem_id) else uv_hubless_system = 0x9; + /* Copy APIC type */ + uv_stringify(sizeof(oem_table_id), oem_table_id, _oem_table_id); + pr_info("UV: OEM IDs %s/%s, SystemType %d, HUBLESS ID %x\n", oem_id, oem_table_id, uv_system_type, uv_hubless_system); return 0; @@ -456,7 +459,7 @@ static int __init uv_acpi_madt_oem_check(char *_oem_id, char *_oem_table_id) uv_cpu_info->p_uv_hub_info = &uv_hub_info_node0; /* If not UV, return. */ - if (likely(uv_set_system_type(_oem_id) == 0)) + if (uv_set_system_type(_oem_id, _oem_table_id) == 0) return 0; /* Save and Decode OEM Table ID */ |