This exit code means that this vCPU wants to inject an interrupt using userspace-emulated controller.
The code is designed to be as much arch-agnostic as possible. Therefore, it has IRQ number and level as parameters (encoded in struct kvm_irq_level). Currently it will be used only by ARM architecture, whose implementation of virtual timer works as if it was edge-sensitive (despite on real hardware timer IRQ is level-sensitive). Therefore, level value is actually reserved for implementing hypothetical level-sensitive IRQs. In this case this exit code would indicate transition of the line to the specified level. Signed-off-by: Pavel Fedin <[email protected]> --- include/uapi/linux/kvm.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 4b60056..57f6fb7 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -183,6 +183,7 @@ struct kvm_s390_skeys { #define KVM_EXIT_EPR 23 #define KVM_EXIT_SYSTEM_EVENT 24 #define KVM_EXIT_S390_STSI 25 +#define KVM_EXIT_IRQ 26 /* For KVM_EXIT_INTERNAL_ERROR */ /* Emulate instruction failed. */ @@ -329,6 +330,8 @@ struct kvm_run { __u8 sel1; __u16 sel2; } s390_stsi; + /* KVM_EXIT_IRQ */ + struct kvm_irq_level irq; /* Fix the size of the union. */ char padding[256]; }; -- 2.4.4 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
