On 08/01/2016 23:17, Doug Goldstein wrote: > Introduce an option where the user can modifiy the maximum number of > supported physical CPUs. > > CC: Ian Campbell <ian.campb...@citrix.com> > CC: Stefano Stabellini <stefano.stabell...@citrix.com> > CC: Keir Fraser <k...@xen.org> > CC: Jan Beulich <jbeul...@suse.com> > CC: Andrew Cooper <andrew.coop...@citrix.com> > Signed-off-by: Doug Goldstein <car...@cardoe.com> > --- > This patch can probably be squashed together with the next one but I > broke it out with the hope that someone can check the wording on the > option and also double check the range. > --- > xen/arch/Kconfig | 8 ++++++++ > xen/arch/arm/Kconfig | 2 ++ > xen/arch/x86/Kconfig | 2 ++ > 3 files changed, 12 insertions(+) > create mode 100644 xen/arch/Kconfig > > diff --git a/xen/arch/Kconfig b/xen/arch/Kconfig > new file mode 100644 > index 0000000..791d577 > --- /dev/null > +++ b/xen/arch/Kconfig > @@ -0,0 +1,8 @@ > + > +config NR_CPUS > + int "Maximum number of CPUs" > + range 1 4095
4094 Recursive spinlocks have 12 bit bitfield for cpu, using -1 as a sentinel. There might be other restrictions, but none currently come to mind. > + default "256" if X86 > + default "128" if ARM > + ---help--- > + Specifies the maximum number of CPUs which Xen will support. "of physical CPUs" This will help avoid confusion with virtual cpu limits. ~Andrew _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
