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?
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