From: Gleb Natapov <gleb@redhat.com>
To: Yang Zhang <yang.z.zhang@intel.com>
Cc: kvm@vger.kernel.org, mtosatti@redhat.com, xiantao.zhang@intel.com
Subject: Re: [PATCH v5 3/6] KVM : Calculate destination vcpu on interrupt injection
Date: Thu, 21 Mar 2013 13:48:05 +0200 [thread overview]
Message-ID: <20130321114805.GP3889@redhat.com> (raw)
In-Reply-To: <1363862964-25148-4-git-send-email-yang.z.zhang@intel.com>
On Thu, Mar 21, 2013 at 06:49:21PM +0800, Yang Zhang wrote:
> From: Yang Zhang <yang.z.zhang@Intel.com>
>
> Add a new parameter to know vcpus who received the interrupt.
>
> Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
> ---
> arch/x86/kvm/lapic.c | 21 ++++++++++++++++-----
> arch/x86/kvm/lapic.h | 5 +++--
> virt/kvm/ioapic.c | 2 +-
> virt/kvm/ioapic.h | 2 +-
> virt/kvm/irq_comm.c | 12 ++++++------
> 5 files changed, 27 insertions(+), 15 deletions(-)
>
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index d3e322a..5f6b1d0 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -433,10 +433,21 @@ int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu)
> static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
> int vector, int level, int trig_mode);
>
> -int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
> +static void kvm_set_irq_dest_map(struct kvm_vcpu *vcpu, unsigned long *dest_map)
> +{
> + if (!kvm_lapic_enabled(vcpu))
> + return;
Why this check here?
> + __set_bit(vcpu->vcpu_id, dest_map);
> +}
> +
> +int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq,
> + unsigned long *dest_map)
> {
> struct kvm_lapic *apic = vcpu->arch.apic;
>
> + if (dest_map)
> + kvm_set_irq_dest_map(vcpu, dest_map);
> +
> return __apic_accept_irq(apic, irq->delivery_mode, irq->vector,
> irq->level, irq->trig_mode);
> }
> @@ -611,7 +622,7 @@ int kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
> }
>
> bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
> - struct kvm_lapic_irq *irq, int *r)
> + struct kvm_lapic_irq *irq, int *r, unsigned long *dest_map)
> {
> struct kvm_apic_map *map;
> unsigned long bitmap = 1;
> @@ -622,7 +633,7 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
> *r = -1;
>
> if (irq->shorthand == APIC_DEST_SELF) {
> - *r = kvm_apic_set_irq(src->vcpu, irq);
> + *r = kvm_apic_set_irq(src->vcpu, irq, dest_map);
> return true;
> }
>
> @@ -667,7 +678,7 @@ bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
> continue;
> if (*r < 0)
> *r = 0;
> - *r += kvm_apic_set_irq(dst[i]->vcpu, irq);
> + *r += kvm_apic_set_irq(dst[i]->vcpu, irq, dest_map);
> }
>
> ret = true;
> @@ -852,7 +863,7 @@ static void apic_send_ipi(struct kvm_lapic *apic)
> irq.trig_mode, irq.level, irq.dest_mode, irq.delivery_mode,
> irq.vector);
>
> - kvm_irq_delivery_to_apic(apic->vcpu->kvm, apic, &irq);
> + kvm_irq_delivery_to_apic(apic->vcpu->kvm, apic, &irq, NULL);
> }
>
> static u32 apic_get_tmcct(struct kvm_lapic *apic)
> diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
> index 2c721b9..967519c 100644
> --- a/arch/x86/kvm/lapic.h
> +++ b/arch/x86/kvm/lapic.h
> @@ -55,11 +55,12 @@ void kvm_apic_set_version(struct kvm_vcpu *vcpu);
>
> int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest);
> int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda);
> -int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq);
> +int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq,
> + unsigned long *dest_map);
> int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type);
>
> bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,
> - struct kvm_lapic_irq *irq, int *r);
> + struct kvm_lapic_irq *irq, int *r, unsigned long *dest_map);
>
> u64 kvm_get_apic_base(struct kvm_vcpu *vcpu);
> void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data);
> diff --git a/virt/kvm/ioapic.c b/virt/kvm/ioapic.c
> index ed6f111..4767fa6 100644
> --- a/virt/kvm/ioapic.c
> +++ b/virt/kvm/ioapic.c
> @@ -217,7 +217,7 @@ static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq)
> irqe.level = 1;
> irqe.shorthand = 0;
>
> - return kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe);
> + return kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe, NULL);
> }
>
> int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
> diff --git a/virt/kvm/ioapic.h b/virt/kvm/ioapic.h
> index 6e5c88f..14e5289 100644
> --- a/virt/kvm/ioapic.h
> +++ b/virt/kvm/ioapic.h
> @@ -88,7 +88,7 @@ int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
> void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
> void kvm_ioapic_reset(struct kvm_ioapic *ioapic);
> int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
> - struct kvm_lapic_irq *irq);
> + struct kvm_lapic_irq *irq, unsigned long *dest_map);
> int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
> int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
> void kvm_ioapic_make_eoibitmap_request(struct kvm *kvm);
> diff --git a/virt/kvm/irq_comm.c b/virt/kvm/irq_comm.c
> index e9073cf..2f07d2e 100644
> --- a/virt/kvm/irq_comm.c
> +++ b/virt/kvm/irq_comm.c
> @@ -63,7 +63,7 @@ inline static bool kvm_is_dm_lowest_prio(struct kvm_lapic_irq *irq)
> }
>
> int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
> - struct kvm_lapic_irq *irq)
> + struct kvm_lapic_irq *irq, unsigned long *dest_map)
> {
> int i, r = -1;
> struct kvm_vcpu *vcpu, *lowest = NULL;
> @@ -74,7 +74,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
> irq->delivery_mode = APIC_DM_FIXED;
> }
>
> - if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r))
> + if (kvm_irq_delivery_to_apic_fast(kvm, src, irq, &r, dest_map))
> return r;
>
> kvm_for_each_vcpu(i, vcpu, kvm) {
> @@ -88,7 +88,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
> if (!kvm_is_dm_lowest_prio(irq)) {
> if (r < 0)
> r = 0;
> - r += kvm_apic_set_irq(vcpu, irq);
> + r += kvm_apic_set_irq(vcpu, irq, dest_map);
> } else if (kvm_lapic_enabled(vcpu)) {
> if (!lowest)
> lowest = vcpu;
> @@ -98,7 +98,7 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
> }
>
> if (lowest)
> - r = kvm_apic_set_irq(lowest, irq);
> + r = kvm_apic_set_irq(lowest, irq, dest_map);
>
> return r;
> }
> @@ -130,7 +130,7 @@ int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e,
>
> kvm_set_msi_irq(e, &irq);
>
> - return kvm_irq_delivery_to_apic(kvm, NULL, &irq);
> + return kvm_irq_delivery_to_apic(kvm, NULL, &irq, NULL);
> }
>
>
> @@ -142,7 +142,7 @@ static int kvm_set_msi_inatomic(struct kvm_kernel_irq_routing_entry *e,
>
> kvm_set_msi_irq(e, &irq);
>
> - if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r))
> + if (kvm_irq_delivery_to_apic_fast(kvm, NULL, &irq, &r, NULL))
> return r;
> else
> return -EWOULDBLOCK;
> --
> 1.7.1
--
Gleb.
next prev parent reply other threads:[~2013-03-21 11:48 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-21 10:49 [PATCH v5 0/6] Use eoi to track RTC interrupt delivery status Yang Zhang
2013-03-21 10:49 ` [PATCH v5 1/6] KVM: Add vcpu info to ioapic_update_eoi() Yang Zhang
2013-03-21 10:49 ` [PATCH v5 2/6] KVM: Introduce struct rtc_status Yang Zhang
2013-03-21 12:08 ` Gleb Natapov
2013-03-21 12:15 ` Zhang, Yang Z
2013-03-21 10:49 ` [PATCH v5 3/6] KVM : Calculate destination vcpu on interrupt injection Yang Zhang
2013-03-21 11:48 ` Gleb Natapov [this message]
2013-03-21 11:56 ` Zhang, Yang Z
2013-03-21 12:03 ` Gleb Natapov
2013-03-21 12:12 ` Zhang, Yang Z
2013-03-21 12:21 ` Gleb Natapov
2013-03-21 12:25 ` Zhang, Yang Z
2013-03-21 10:49 ` [PATCH v5 4/6] KVM: Add reset/restore rtc_status support Yang Zhang
2013-03-22 10:16 ` Marcelo Tosatti
2013-03-22 10:47 ` Zhang, Yang Z
2013-03-21 10:49 ` [PATCH v5 5/6] KVM: Force vmexit with virtual interrupt delivery Yang Zhang
2013-03-21 10:49 ` [PATCH v5 6/6] KVM: Use eoi to track RTC interrupt delivery status Yang Zhang
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