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

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 714233c..a579479 100644 (file)
--- 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 */