summaryrefslogtreecommitdiffstats
path: root/Documentation/s390
diff options
context:
space:
mode:
authorThomas Gleixner <tglx@linutronix.de>2016-05-10 09:20:33 +0200
committerThomas Gleixner <tglx@linutronix.de>2016-05-10 09:28:31 +0200
commit8d415ee225a3d15d3e3029524350e8237a4de7b8 (patch)
tree7352acadefca3b72f6f3d374f2d5436dd4468cb9 /Documentation/s390
parent4abac0d0bbc628df5f26845fe05ffc6b3a6533dd (diff)
downloadlinux-8d415ee225a3d15d3e3029524350e8237a4de7b8.tar.bz2
x86/topology: Set x86_max_cores to 1 for CONFIG_SMP=n
Josef reported that the uncore driver trips over with CONFIG_SMP=n because x86_max_cores is 16 instead of 12. The reason is, that for SMP=n the extended topology detection is a NOOP and the cache leaf is used to determine the number of cores. That's wrong in two aspects: 1) The cache leaf enumerates the maximum addressable number of cores in the package, which is obviously not correct 2) UP has no business with topology bits at all. Make intel_num_cpu_cores() return 1 for CONFIG_SMP=n Reported-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: kernel-team <Kernel-team@fb.com> Cc: Kan Liang <kan.liang@intel.com> Link: http://lkml.kernel.org/r/761b4a2a-0332-7954-f030-c6639f949612@fb.com
Diffstat (limited to 'Documentation/s390')
0 files changed, 0 insertions, 0 deletions