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 <jgross@xxxxxxxx> 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@xxxxxxxxxx/ Considering that the patch is a bug fix, should this series be rebased on top of that? -- Eduardo
