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

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@linaro.org

Acked-by: Marc Zyngier marc.zyngier@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);

}