diff mbox series

[v2,4/5] KVM: s390: vsie: Move conditional reschedule

Message ID 20200403153050.20569-5-david@redhat.com (mailing list archive)
State New, archived
Headers show
Series KVM: s390: vsie: fixes and cleanups | expand

Commit Message

David Hildenbrand April 3, 2020, 3:30 p.m. UTC 
Let's move it to the outer loop, in case we ever run again into long
loops, trying to map the prefix. While at it, convert it to cond_resched().

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 arch/s390/kvm/vsie.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Christian Borntraeger April 6, 2020, 3:06 p.m. UTC | #1 
On 03.04.20 17:30, David Hildenbrand wrote:
> Let's move it to the outer loop, in case we ever run again into long
> loops, trying to map the prefix. While at it, convert it to cond_resched().
> 
> Signed-off-by: David Hildenbrand <david@redhat.com>

Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>


> ---
>  arch/s390/kvm/vsie.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
> index 4f6c22d72072..ef05b4e167fb 100644
> --- a/arch/s390/kvm/vsie.c
> +++ b/arch/s390/kvm/vsie.c
> @@ -1000,8 +1000,6 @@ static int do_vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
>  
>  	handle_last_fault(vcpu, vsie_page);
>  
> -	if (need_resched())
> -		schedule();
>  	if (test_cpu_flag(CIF_MCCK_PENDING))
>  		s390_handle_mcck();
>  
> @@ -1185,6 +1183,7 @@ static int vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
>  		    kvm_s390_vcpu_has_irq(vcpu, 0) ||
>  		    kvm_s390_vcpu_sie_inhibited(vcpu))
>  			break;
> +		cond_resched();
>  	}
>  
>  	if (rc == -EFAULT) {
>
Claudio Imbrenda April 7, 2020, 10:52 a.m. UTC | #2 
On Fri,  3 Apr 2020 17:30:49 +0200
David Hildenbrand <david@redhat.com> wrote:

> Let's move it to the outer loop, in case we ever run again into long
> loops, trying to map the prefix. While at it, convert it to
> cond_resched().
> 
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
>  arch/s390/kvm/vsie.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
> index 4f6c22d72072..ef05b4e167fb 100644
> --- a/arch/s390/kvm/vsie.c
> +++ b/arch/s390/kvm/vsie.c
> @@ -1000,8 +1000,6 @@ static int do_vsie_run(struct kvm_vcpu *vcpu,
> struct vsie_page *vsie_page) 
>  	handle_last_fault(vcpu, vsie_page);
>  
> -	if (need_resched())
> -		schedule();
>  	if (test_cpu_flag(CIF_MCCK_PENDING))
>  		s390_handle_mcck();
>  
> @@ -1185,6 +1183,7 @@ static int vsie_run(struct kvm_vcpu *vcpu,
> struct vsie_page *vsie_page) kvm_s390_vcpu_has_irq(vcpu, 0) ||
>  		    kvm_s390_vcpu_sie_inhibited(vcpu))
>  			break;
> +		cond_resched();
>  	}
>  
>  	if (rc == -EFAULT) {

Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
diff mbox series

Patch

diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c
index 4f6c22d72072..ef05b4e167fb 100644
--- a/arch/s390/kvm/vsie.c
+++ b/arch/s390/kvm/vsie.c
@@ -1000,8 +1000,6 @@  static int do_vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 
 	handle_last_fault(vcpu, vsie_page);
 
-	if (need_resched())
-		schedule();
 	if (test_cpu_flag(CIF_MCCK_PENDING))
 		s390_handle_mcck();
 
@@ -1185,6 +1183,7 @@  static int vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page)
 		    kvm_s390_vcpu_has_irq(vcpu, 0) ||
 		    kvm_s390_vcpu_sie_inhibited(vcpu))
 			break;
+		cond_resched();
 	}
 
 	if (rc == -EFAULT) {