Sigh.
Seems that my mail script got confused by the # after stable. So please
strip down the cc list.
On 11/19/2015 09:37 AM, Christian Borntraeger wrote:
> From: David Hildenbrand <dahi@xxxxxxxxxxxxxxxxxx>
>
> For now, VCPUs were always created sequentially with incrementing
> VCPU ids. Therefore, the index in the VCPUs array matched the id.
>
> As sequential creation might change with cpu hotplug, let's use
> the correct lookup function to find a VCPU by id, not array index.
>
> Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> Signed-off-by: David Hildenbrand <dahi@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> [split stable/non-stable parts]
> Cc: stable@xxxxxxxxxxxxxxx # c3853a8: KVM: Provide function for VCPU lookup by id
> ---
> arch/s390/kvm/sigp.c | 8 ++------
> 1 file changed, 2 insertions(+), 6 deletions(-)
>
> diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
> index da690b6..081dbd0 100644
> --- a/arch/s390/kvm/sigp.c
> +++ b/arch/s390/kvm/sigp.c
> @@ -291,12 +291,8 @@ static int handle_sigp_dst(struct kvm_vcpu *vcpu, u8 order_code,
> u16 cpu_addr, u32 parameter, u64 *status_reg)
> {
> int rc;
> - struct kvm_vcpu *dst_vcpu;
> + struct kvm_vcpu *dst_vcpu = kvm_lookup_vcpu(vcpu->kvm, cpu_addr);
>
> - if (cpu_addr >= KVM_MAX_VCPUS)
> - return SIGP_CC_NOT_OPERATIONAL;
> -
> - dst_vcpu = kvm_get_vcpu(vcpu->kvm, cpu_addr);
> if (!dst_vcpu)
> return SIGP_CC_NOT_OPERATIONAL;
>
> @@ -478,7 +474,7 @@ int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu)
> trace_kvm_s390_handle_sigp_pei(vcpu, order_code, cpu_addr);
>
> if (order_code == SIGP_EXTERNAL_CALL) {
> - dest_vcpu = kvm_get_vcpu(vcpu->kvm, cpu_addr);
> + dest_vcpu = kvm_lookup_vcpu(vcpu->kvm, cpu_addr);
> BUG_ON(dest_vcpu == NULL);
>
> kvm_s390_vcpu_wakeup(dest_vcpu);
>
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