On 03.09.21 18:05, Eduardo Habkost wrote: > On Fri, Sep 03, 2021 at 03:08:04PM +0200, Juergen Gross wrote: >> In order to support high vcpu numbers per guest don't use on stack >> vcpu bitmasks. As all those currently used bitmasks are not used in >> functions subject to recursion it is fairly easy to replace them with >> percpu bitmasks. >> >> Disable preemption while such a bitmask is being used in order to >> avoid double usage in case we'd switch cpus. >> >> Signed-off-by: Juergen Gross > > Note that there's another patch that will introduce another > KVM_MAX_VCPUS bitmap variable on the stack: > https://lore.kernel.org/lkml/20210827092516.1027264-7-vkuznets@redhat.com/ > > Considering that the patch is a bug fix, should this series be > rebased on top of that? > Yes, I can do that. Juergen