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.
--
Without deviation from the norm, progress is not possible.
