diff options
| author | Scott Wood <[email protected]> | 2019-10-12 02:00:54 -0500 |
|---|---|---|
| committer | Borislav Petkov <[email protected]> | 2019-10-17 18:04:51 +0200 |
| commit | 1edae1ae62589f28d00da186465a003e2a7f9c6c (patch) | |
| tree | 213493dec97626c3f43f7ffcca8a9285e2a750f3 /lib/memory-notifier-error-inject.c | |
| parent | 9d40b85bb46a99bc95dad3a07787da93b0a018e9 (diff) | |
x86/Kconfig: Enforce limit of 512 CPUs with MAXSMP and no CPUMASK_OFFSTACK
The help text of NR_CPUS says that the maximum number of CPUs supported
without CPUMASK_OFFSTACK is 512. However, NR_CPUS_RANGE_END allows this
limit to be bypassed by MAXSMP even if CPUMASK_OFFSTACK is not set.
This scenario can currently only happen in the RT tree, since it has
"select CPUMASK_OFFSTACK if !PREEMPT_RT_FULL" in MAXSMP. However,
even if we ignore the RT tree, checking for MAXSMP in addition to
CPUMASK_OFFSTACK is redundant.
Signed-off-by: Scott Wood <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Mike Travis <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: x86-ml <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Diffstat (limited to 'lib/memory-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions