>>> On 09.01.16 at 14:43, <andrew.coop...@citrix.com> wrote: > 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.
range 1 4095 means CPUs 0...4094, i.e. afaict the range above is correct. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
