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Subject[tip: x86/urgent] x86/platform/uv: Recognize UV5 hubless system identifier
The following commit has been merged into the x86/urgent branch of tip:

Commit-ID: 801284f9737883a2b2639bd494455a72c82fdedf
Gitweb: https://git.kernel.org/tip/801284f9737883a2b2639bd494455a72c82fdedf
Author: Mike Travis <mike.travis@hpe.com>
AuthorDate: Thu, 05 Nov 2020 16:27:41 -06:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Sat, 07 Nov 2020 11:17:39 +01:00

x86/platform/uv: Recognize UV5 hubless system identifier

Testing shows a problem in that UV5 hubless systems were not being
recognized. Add them to the list of OEM IDs checked.

Fixes: 6c7794423a998 ("Add UV5 direct references")
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201105222741.157029-4-mike.travis@hpe.com


---
arch/x86/kernel/apic/x2apic_uv_x.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 0f848d6..3115caa 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -389,13 +389,20 @@ static int __init uv_set_system_type(char *_oem_id, char *_oem_table_id)
/* (Not hubless), not a UV */
return 0;

+ /* Is UV hubless system */
+ uv_hubless_system = 0x01;
+
+ /* UV5 Hubless */
+ if (strncmp(uv_archtype, "NSGI5", 5) == 0)
+ uv_hubless_system |= 0x20;
+
/* UV4 Hubless: CH */
- if (strncmp(uv_archtype, "NSGI4", 5) == 0)
- uv_hubless_system = 0x11;
+ else if (strncmp(uv_archtype, "NSGI4", 5) == 0)
+ uv_hubless_system |= 0x10;

/* UV3 Hubless: UV300/MC990X w/o hub */
else
- uv_hubless_system = 0x9;
+ uv_hubless_system |= 0x8;

/* Copy APIC type */
uv_stringify(sizeof(oem_table_id), oem_table_id, _oem_table_id);
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