Hi Alex,
Can you please apply following patches:
[PATCH 1/4] Introduce a common kvm requests handler
[PATCH 2/4] KVM: PPC: booke: Add watchdog emulation
[PATCH 3/4] booke: Added ONE_REG interface for IAC/DAC debug registers
[PATCH 3/3] Enable kvm emulated watchdog
[PATCH 2/3] Registered timer reset handler
[PATCH 1/3] Synchronize the linux-headers
Thanks
-Bharat
> -----Original Message-----
> From: Bhushan Bharat-R65777
> Sent: Thursday, August 09, 2012 12:08 PM
> To: kvm-ppc@xxxxxxxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; agraf@xxxxxxx
> Cc: Bhushan Bharat-R65777
> Subject: [PATCH 1/4] Introduce a common kvm requests handler
>
> Added a common requests handler which is called before returning to guest.
> This returns non zero value when some request demands exit to userspace.
>
> Signed-off-by: Bharat Bhushan <bharat.bhushan@xxxxxxxxxxxxx>
> ---
> arch/powerpc/kvm/booke.c | 45 +++++++++++++++++++++++++++++++++------------
> 1 files changed, 33 insertions(+), 12 deletions(-)
>
> diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index
> d25a097..6ebff80 100644
> --- a/arch/powerpc/kvm/booke.c
> +++ b/arch/powerpc/kvm/booke.c
> @@ -412,18 +412,30 @@ static void update_timer_ints(struct kvm_vcpu *vcpu)
> kvmppc_core_dequeue_dec(vcpu);
> }
>
> +/*
> + * This function handle all requests when returning to guest. This
> +return
> + * non zero value when some request demands exit to userspace.
> + */
> +static int kvmppc_handle_requests(struct kvm_vcpu *vcpu) {
> + int ret = 0;
> +
> + if (!vcpu->requests)
> + return 0;
> +
> + if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu)) {
> + smp_mb();
> + update_timer_ints(vcpu);
> + }
> +
> + return ret;
> +}
> +
> static void kvmppc_core_check_exceptions(struct kvm_vcpu *vcpu) {
> unsigned long *pending = &vcpu->arch.pending_exceptions;
> unsigned int priority;
>
> - if (vcpu->requests) {
> - if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu)) {
> - smp_mb();
> - update_timer_ints(vcpu);
> - }
> - }
> -
> priority = __ffs(*pending);
> while (priority < BOOKE_IRQPRIO_MAX) {
> if (kvmppc_booke_irqprio_deliver(vcpu, priority)) @@ -479,10
> +491,15 @@ static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu)
> }
>
> if (signal_pending(current)) {
> + vcpu->run->exit_reason = KVM_EXIT_INTR;
> r = 1;
> break;
> }
>
> + r = kvmppc_handle_requests(vcpu);
> + if (r)
> + break;
> +
> if (kvmppc_core_prepare_to_enter(vcpu)) {
> /* interrupts got enabled in between, so we
> are back at square 1 */
> @@ -511,8 +528,10 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct
> kvm_vcpu *vcpu)
>
> local_irq_disable();
> if (kvmppc_prepare_to_enter(vcpu)) {
> - kvm_run->exit_reason = KVM_EXIT_INTR;
> - ret = -EINTR;
> + if (kvm_run->exit_reason == KVM_EXIT_INTR)
> + ret = -EINTR;
> + else
> + ret = 0;
> goto out;
> }
>
> @@ -972,9 +991,11 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu
> *vcpu,
> if (!(r & RESUME_HOST)) {
> local_irq_disable();
> if (kvmppc_prepare_to_enter(vcpu)) {
> - run->exit_reason = KVM_EXIT_INTR;
> - r = (-EINTR << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
> - kvmppc_account_exit(vcpu, SIGNAL_EXITS);
> + if (run->exit_reason == KVM_EXIT_INTR) {
> + r = (-EINTR << 2) | RESUME_HOST | (r &
> RESUME_FLAG_NV);
> + kvmppc_account_exit(vcpu, SIGNAL_EXITS);
> + } else
> + r = RESUME_HOST | (r & RESUME_FLAG_NV);
> }
> }
>
> --
> 1.7.0.4
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