| Date | Fri, 11 Feb 2022 16:34:40 +0000 | From | Sean Christopherson <> | Subject | Re: [PATCH 07/49] KVM: x86: replace bitmap_weight with bitmap_empty where appropriate |
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On Thu, Feb 10, 2022, Yury Norov wrote: > In some places kvm/hyperv.c code calls bitmap_weight() to check if any bit > of a given bitmap is set. It's better to use bitmap_empty() in that case > because bitmap_empty() stops traversing the bitmap as soon as it finds > first set bit, while bitmap_weight() counts all bits unconditionally. > > Signed-off-by: Yury Norov <yury.norov@gmail.com> > Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com> > ---
Reviewed-by: Sean Christopherson <seanjc@google.com>
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