diff options
| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2014-03-12 12:40:31 +0100 |
|---|---|---|
| committer | Cornelia Huck <cornelia.huck@de.ibm.com> | 2014-06-10 09:50:27 +0200 |
| commit | bbd8bb8e3245cf6fc6d12b10b3320ab183adb866 (patch) | |
| tree | 22a30379a02d6d83be2f11bc432f81e82d4953eb | |
| parent | de13d2161473d02ae97ec0f8e4503147554892dd (diff) | |
| download | qemu-bbd8bb8e3245cf6fc6d12b10b3320ab183adb866.tar.gz | |
s390x/kvm: inject via flic
Try to inject floating interrupts via the flic if it is available.
This allows us to inject the full range of floating interrupts.
Reviewed-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
| -rw-r--r-- | hw/intc/s390_flic_kvm.c | 10 | ||||
| -rw-r--r-- | target-s390x/cpu.h | 1 | ||||
| -rw-r--r-- | target-s390x/kvm.c | 19 |
3 files changed, 29 insertions, 1 deletions
diff --git a/hw/intc/s390_flic_kvm.c b/hw/intc/s390_flic_kvm.c index a734094292..b471e7a41e 100644 --- a/hw/intc/s390_flic_kvm.c +++ b/hw/intc/s390_flic_kvm.c @@ -117,6 +117,16 @@ static int flic_enqueue_irqs(void *buf, uint64_t len, return rc ? -errno : 0; } +int kvm_s390_inject_flic(struct kvm_s390_irq *irq) +{ + static KVMS390FLICState *flic; + + if (unlikely(!flic)) { + flic = KVM_S390_FLIC(s390_get_flic()); + } + return flic_enqueue_irqs(irq, sizeof(*irq), flic); +} + /** * __get_all_irqs - store all pending irqs in buffer * @flic: pointer to flic device state diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 9982c35fc2..b13761d925 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -365,6 +365,7 @@ void kvm_s390_virtio_irq(int config_change, uint64_t token); void kvm_s390_service_interrupt(uint32_t parm); void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq); void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq); +int kvm_s390_inject_flic(struct kvm_s390_irq *irq); #else static inline void kvm_s390_reset_vcpu(S390CPU *cpu) { diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index a2133ff1ce..a1a4cc2cab 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -623,7 +623,7 @@ void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq) } } -void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq) +static void __kvm_s390_floating_interrupt(struct kvm_s390_irq *irq) { struct kvm_s390_interrupt kvmint = {}; int r; @@ -641,6 +641,23 @@ void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq) } } +void kvm_s390_floating_interrupt(struct kvm_s390_irq *irq) +{ + static bool use_flic = true; + int r; + + if (use_flic) { + r = kvm_s390_inject_flic(irq); + if (r == -ENOSYS) { + use_flic = false; + } + if (!r) { + return; + } + } + __kvm_s390_floating_interrupt(irq); +} + void kvm_s390_virtio_irq(int config_change, uint64_t token) { struct kvm_s390_irq irq = { |