From 3ab0c49fd6b1e80438d0a649584d292880112262 Mon Sep 17 00:00:00 2001 From: James Custer Date: Sun, 2 Nov 2014 12:16:38 -0600 Subject: [PATCH] x86: UV BAU: Increase maximum CPUs per socket/hub 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 Cc: Russ Anderson Link: http://lkml.kernel.org/r/1414952199-185319-1-git-send-email-jcuster@sgi.com Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/uv/uv_bau.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/uv/uv_bau.h b/arch/x86/include/asm/uv/uv_bau.h index 2d60a7813dfe..fc808b83fccb 100644 --- a/arch/x86/include/asm/uv/uv_bau.h +++ b/arch/x86/include/asm/uv/uv_bau.h @@ -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 -- 2.20.1