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x86: UV BAU: Increase maximum CPUs per socket/hub

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We have encountered hardware with 18 cores/socket that gives 36 CPUs/socket
with hyperthreading enabled. This exceeds the current MAX_CPUS_PER_SOCKET
causing a failure in get_cpu_topology. Increase MAX_CPUS_PER_SOCKET to 64
and MAX_CPUS_PER_UVHUB to 128.

Signed-off-by: James Custer <jcuster@sgi.com>
Cc: Russ Anderson <rja@sgi.com>
Link: http://lkml.kernel.org/r/1414952199-185319-1-git-send-email-jcuster@sgi.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
James Custer 2014-11-02 12:16:38 -06:00 • committed by Thomas Gleixner
parent fa2a79ce6a
commit 3ab0c49fd6
1 changed files with 2 additions and 2 deletions
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4
arch/x86/include/asm/uv/uv_bau.h
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@ -33,8 +33,8 @@
* Each of the descriptors is 64 bytes in size (8*64 = 512 bytes in a set).
*/
#define MAX_CPUS_PER_UVHUB 64
#define MAX_CPUS_PER_SOCKET 32
#define MAX_CPUS_PER_UVHUB 128
#define MAX_CPUS_PER_SOCKET 64
#define ADP_SZ 64 /* hardware-provided max. */
#define UV_CPUS_PER_AS 32 /* hardware-provided max. */
#define ITEMS_PER_DESC 8