On 18/11/22 2:14 am, Marc Zyngier wrote:
On Sun, 13 Nov 2022 17:05:10 +0000,
Shivam Kumar <shivam.kumar1@xxxxxxxxxxx> wrote:
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/arm64/kvm/arm.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 94d33e296e10..850024982dd9 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -746,6 +746,15 @@ static int check_vcpu_requests(struct kvm_vcpu *vcpu)
if (kvm_check_request(KVM_REQ_SUSPEND, vcpu))
return kvm_vcpu_suspend(vcpu);
+
+ 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 0;
+ }
}
return 1;
As pointed out by others, this should be common code. This would
definitely avoid the difference in behaviour between architectures.
M.
Ack.
Thanks,
Shivam
