Exit to userspace whenever the dirty quota is exhausted (i.e. dirty count equals/exceeds dirty quota) to request more dirty quota. Suggested-by: Shaju Abraham <shaju.abraham@xxxxxxxxxxx> Suggested-by: Manish Mishra <manish.mishra@xxxxxxxxxxx> Co-developed-by: Anurag Madnawat <anurag.madnawat@xxxxxxxxxxx> Signed-off-by: Anurag Madnawat <anurag.madnawat@xxxxxxxxxxx> Signed-off-by: Shivam Kumar <shivam.kumar1@xxxxxxxxxxx> --- arch/s390/kvm/kvm-s390.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index edfd4bbd0cba..2fe2933a7064 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -4343,6 +4343,15 @@ static int kvm_s390_handle_requests(struct kvm_vcpu *vcpu) goto retry; } + if (kvm_check_request(KVM_REQ_DIRTY_QUOTA_EXIT, vcpu)) { + struct kvm_run *run = vcpu->run; + + run->exit_reason = KVM_EXIT_DIRTY_QUOTA_EXHAUSTED; + run->dirty_quota_exit.count = vcpu->stat.generic.pages_dirtied; + run->dirty_quota_exit.quota = vcpu->dirty_quota; + return 1; + } + /* nothing to do, just clear the request */ kvm_clear_request(KVM_REQ_UNHALT, vcpu); /* we left the vsie handler, nothing to do, just clear the request */ -- 2.22.3