linux-kernel - Re: [PATCH v4 12/18] KVM: selftests: Keep track of the number of vCPUs for a VM

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Date:   Thu, 9 Sep 2021 05:22:17 +0000
From:   Oliver Upton <oupton@...gle.com>
To:     Raghavendra Rao Ananta <rananta@...gle.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, Marc Zyngier <maz@...nel.org>,
        Andrew Jones <drjones@...hat.com>,
        James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Peter Shier <pshier@...gle.com>,
        Ricardo Koller <ricarkol@...gle.com>,
        Reiji Watanabe <reijiw@...gle.com>,
        Jing Zhang <jingzhangos@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v4 12/18] KVM: selftests: Keep track of the number of
 vCPUs for a VM

On Thu, Sep 09, 2021 at 01:38:12AM +0000, Raghavendra Rao Ananta wrote:
> The host may want to know the number of vCPUs that were
> created for a particular VM (used in upcoming patches).
> Hence, include nr_vcpus as a part of 'struct kvm_vm' to
> keep track of vCPUs as and when they are added or
> deleted, and return to the caller via vm_get_nr_vcpus().
> 
> Signed-off-by: Raghavendra Rao Ananta <rananta@...gle.com>
> ---
>  tools/testing/selftests/kvm/include/kvm_util.h      | 1 +
>  tools/testing/selftests/kvm/lib/kvm_util.c          | 7 +++++++
>  tools/testing/selftests/kvm/lib/kvm_util_internal.h | 1 +
>  3 files changed, 9 insertions(+)

Shouldn't a test keep track/know how many vCPUs it has created?

--
Thanks,
Oliver