Re: [PATCH 35/37] KVM: PPC: booke: Support perfmon interrupts
On 25.02.2012, at 00:33, Scott Wood wrote: On 02/24/2012 08:26 AM, Alexander Graf wrote: When during guest context we get a performance monitor interrupt, we currently bail out and oops. Let's route it to its correct handler instead. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/booke.c |4 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 7adef28..423701b 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -677,6 +677,10 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, r = RESUME_GUEST; break; +case BOOKE_INTERRUPT_PERFORMANCE_MONITOR: +r = RESUME_GUEST; +break; + case BOOKE_INTERRUPT_HV_PRIV: r = emulation_exit(run, vcpu); break; Why do we need to call timer_interrupt() explicitly, but can rely on automatic retriggering for perfmon? We don't rely on automatic retriggering for perfmon. There are 2 different places where we need to handle an incoming exit code - the reinject code path and the big switch over all exits code path. This one deals with the latter. Alex ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
[PATCH 35/37] KVM: PPC: booke: Support perfmon interrupts
When during guest context we get a performance monitor interrupt, we currently bail out and oops. Let's route it to its correct handler instead. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/booke.c |4 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 7adef28..423701b 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -677,6 +677,10 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, r = RESUME_GUEST; break; + case BOOKE_INTERRUPT_PERFORMANCE_MONITOR: + r = RESUME_GUEST; + break; + case BOOKE_INTERRUPT_HV_PRIV: r = emulation_exit(run, vcpu); break; -- 1.6.0.2 ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: [PATCH 35/37] KVM: PPC: booke: Support perfmon interrupts
On 02/24/2012 08:26 AM, Alexander Graf wrote: When during guest context we get a performance monitor interrupt, we currently bail out and oops. Let's route it to its correct handler instead. Signed-off-by: Alexander Graf ag...@suse.de --- arch/powerpc/kvm/booke.c |4 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 7adef28..423701b 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -677,6 +677,10 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, r = RESUME_GUEST; break; + case BOOKE_INTERRUPT_PERFORMANCE_MONITOR: + r = RESUME_GUEST; + break; + case BOOKE_INTERRUPT_HV_PRIV: r = emulation_exit(run, vcpu); break; Why do we need to call timer_interrupt() explicitly, but can rely on automatic retriggering for perfmon? -Scott ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
