[RFC,3/6] KVM: s390: consider epoch index on hotplugged CPUs
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Message ID 20180207114647.6220-4-david@redhat.com
State New
Headers show

Commit Message

David Hildenbrand Feb. 7, 2018, 11:46 a.m. UTC
We must copy both, the epoch and the epoch_idx.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 arch/s390/kvm/kvm-s390.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Cornelia Huck Feb. 15, 2018, 1:09 p.m. UTC | #1
On Wed,  7 Feb 2018 12:46:44 +0100
David Hildenbrand <david@redhat.com> wrote:

> We must copy both, the epoch and the epoch_idx.
> 
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>  arch/s390/kvm/kvm-s390.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index b514ee427077..d007b737cd4d 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -2387,6 +2387,7 @@ void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
>  	mutex_lock(&vcpu->kvm->lock);
>  	preempt_disable();
>  	vcpu->arch.sie_block->epoch = vcpu->kvm->arch.epoch;
> +	vcpu->arch.sie_block->epdx = vcpu->kvm->arch.epdx;
>  	preempt_enable();
>  	mutex_unlock(&vcpu->kvm->lock);
>  	if (!kvm_is_ucontrol(vcpu->kvm)) {

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Christian Borntraeger Feb. 16, 2018, 9:50 a.m. UTC | #2
On 02/07/2018 12:46 PM, David Hildenbrand wrote:
> We must copy both, the epoch and the epoch_idx.
> 
> Signed-off-by: David Hildenbrand <david@redhat.com>

Thanks applied. Deserves a cc stable I think.

> ---
>  arch/s390/kvm/kvm-s390.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index b514ee427077..d007b737cd4d 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -2387,6 +2387,7 @@ void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
>  	mutex_lock(&vcpu->kvm->lock);
>  	preempt_disable();
>  	vcpu->arch.sie_block->epoch = vcpu->kvm->arch.epoch;
> +	vcpu->arch.sie_block->epdx = vcpu->kvm->arch.epdx;
>  	preempt_enable();
>  	mutex_unlock(&vcpu->kvm->lock);
>  	if (!kvm_is_ucontrol(vcpu->kvm)) {
>

Patch
diff mbox

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index b514ee427077..d007b737cd4d 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -2387,6 +2387,7 @@  void kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
 	mutex_lock(&vcpu->kvm->lock);
 	preempt_disable();
 	vcpu->arch.sie_block->epoch = vcpu->kvm->arch.epoch;
+	vcpu->arch.sie_block->epdx = vcpu->kvm->arch.epdx;
 	preempt_enable();
 	mutex_unlock(&vcpu->kvm->lock);
 	if (!kvm_is_ucontrol(vcpu->kvm)) {