[PATCH 06/10] arm/arm64: kvm: Set vcpu->cpu to -1 on vcpu_put

[Marc Zyngier]

On 12/12/13 19:55, Christoffer Dall wrote:
> The arch-generic KVM code expects the cpu field of a vcpu to be -1 if
> the vcpu is no longer assigned to a cpu.  This is used for the optimized
> make_all_cpus_request path and will be used by the vgic code to check
> that no vcpus are running.
> 
> Signed-off-by: Christoffer Dall <christoffer.dall at linaro.org>

Acked-by: Marc Zyngier <marc.zyngier at arm.com>

	M.

> ---
> Changelog[v4]:
>  - New in series
> 
>  arch/arm/kvm/arm.c | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
> index f290b22..b92ff6d3 100644
> --- a/arch/arm/kvm/arm.c
> +++ b/arch/arm/kvm/arm.c
> @@ -342,6 +342,13 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
>  
>  void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
>  {
> +	/*
> +	 * The arch-generic KVM code expects the cpu field of a vcpu to be -1
> +	 * if the vcpu is no longer assigned to a cpu.  This is used for the
> +	 * optimized make_all_cpus_request path.
> +	 */
> +	vcpu->cpu = -1;
> +
>  	kvm_arm_set_running_vcpu(NULL);
>  }
>  
> 


-- 
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