From: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> Monday, July 9, 2018 10:40 AM
> Commit 1268ed0c474a ("x86/hyper-v: Fix the circular dependency in IPI
> enlightenment") made cpumask_to_vpset() return '-1' when there is a CPU
> with unknown VP index in the supplied set. This needs to be checked before
> we pass 'nr_bank' to hypercall.
>
> Fixes: 1268ed0c474a ("x86/hyper-v: Fix the circular dependency in IPI enlightenment")
> Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
> ---
> arch/x86/hyperv/mmu.c | 2 ++
> 1 file changed, 2 insertions(+)
Reviewed-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
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