From 1191c94963f36b3f9631fcd1ec2e9296631b407e Mon Sep 17 00:00:00 2001 From: Jens Freimann Date: Thu, 18 Dec 2014 17:38:05 +0100 Subject: [PATCH] s390x/kvm: use ioctl KVM_S390_IRQ for vcpu interrupts KVM_S390_INT uses only two parameter fields. This is not enough to pass all required information for certain interrupts. A new ioctl KVM_S390_IRQ is available which allows us to inject all local interrupts as defined in the Principles of Operation. It takes a struct kvm_s390_irq as a parameter which can store interrupt payload data for all interrupts. Let's use the new ioctl for injecting vcpu interrupts. Tested-by: Thomas Huth Reviewed-by: Thomas Huth Reviewed-by: David Hildenbrand Signed-off-by: Jens Freimann Signed-off-by: Cornelia Huck --- target-s390x/kvm.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c index 8e65e43f02..43ad0094b6 100644 --- a/target-s390x/kvm.c +++ b/target-s390x/kvm.c @@ -124,6 +124,7 @@ const KVMCapabilityInfo kvm_arch_required_capabilities[] = { static int cap_sync_regs; static int cap_async_pf; static int cap_mem_op; +static int cap_s390_irq; static void *legacy_s390_alloc(size_t size, uint64_t *align); @@ -249,6 +250,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) cap_sync_regs = kvm_check_extension(s, KVM_CAP_SYNC_REGS); cap_async_pf = kvm_check_extension(s, KVM_CAP_ASYNC_PF); cap_mem_op = kvm_check_extension(s, KVM_CAP_S390_MEM_OP); + cap_s390_irq = kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ); kvm_s390_enable_cmma(s); @@ -827,10 +829,9 @@ static int s390_kvm_irq_to_interrupt(struct kvm_s390_irq *irq, return r; } -void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq) +static void inject_vcpu_irq_legacy(CPUState *cs, struct kvm_s390_irq *irq) { struct kvm_s390_interrupt kvmint = {}; - CPUState *cs = CPU(cpu); int r; r = s390_kvm_irq_to_interrupt(irq, &kvmint); @@ -846,6 +847,23 @@ void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq) } } +void kvm_s390_vcpu_interrupt(S390CPU *cpu, struct kvm_s390_irq *irq) +{ + CPUState *cs = CPU(cpu); + int r; + + if (cap_s390_irq) { + r = kvm_vcpu_ioctl(cs, KVM_S390_IRQ, irq); + if (!r) { + return; + } + error_report("KVM failed to inject interrupt %llx", irq->type); + exit(1); + } + + inject_vcpu_irq_legacy(cs, irq); +} + static void __kvm_s390_floating_interrupt(struct kvm_s390_irq *irq) { struct kvm_s390_interrupt kvmint = {}; -- 2.11.4.GIT