diff options
| -rw-r--r-- | hw/ppc.c | 11 | ||||
| -rw-r--r-- | target-ppc/kvm.c | 37 | ||||
| -rw-r--r-- | target-ppc/kvm_ppc.h | 13 |
3 files changed, 59 insertions, 2 deletions
@@ -28,6 +28,8 @@ #include "nvram.h" #include "qemu-log.h" #include "loader.h" +#include "kvm.h" +#include "kvm_ppc.h" //#define PPC_DEBUG_IRQ //#define PPC_DEBUG_TB @@ -50,6 +52,8 @@ static void cpu_ppc_tb_start (CPUState *env); static void ppc_set_irq (CPUState *env, int n_IRQ, int level) { + unsigned int old_pending = env->pending_interrupts; + if (level) { env->pending_interrupts |= 1 << n_IRQ; cpu_interrupt(env, CPU_INTERRUPT_HARD); @@ -58,6 +62,13 @@ static void ppc_set_irq (CPUState *env, int n_IRQ, int level) if (env->pending_interrupts == 0) cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); } + + if (old_pending != env->pending_interrupts) { +#ifdef CONFIG_KVM + kvmppc_set_interrupt(env, n_IRQ, level); +#endif + } + LOG_IRQ("%s: %p n_IRQ %d level %d => pending %08" PRIx32 "req %08x\n", __func__, env, n_IRQ, level, env->pending_interrupts, env->interrupt_request); diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c index 14d6365ee2..5cacef7b58 100644 --- a/target-ppc/kvm.c +++ b/target-ppc/kvm.c @@ -37,6 +37,9 @@ do { } while (0) #endif +static int cap_interrupt_unset = false; +static int cap_interrupt_level = false; + /* XXX We have a race condition where we actually have a level triggered * interrupt, but the infrastructure can't expose that yet, so the guest * takes but ignores it, goes to sleep and never gets notified that there's @@ -55,6 +58,18 @@ static void kvm_kick_env(void *env) int kvm_arch_init(KVMState *s, int smp_cpus) { +#ifdef KVM_CAP_PPC_UNSET_IRQ + cap_interrupt_unset = kvm_check_extension(s, KVM_CAP_PPC_UNSET_IRQ); +#endif +#ifdef KVM_CAP_PPC_IRQ_LEVEL + cap_interrupt_level = kvm_check_extension(s, KVM_CAP_PPC_IRQ_LEVEL); +#endif + + if (!cap_interrupt_level) { + fprintf(stderr, "KVM: Couldn't find level irq capability. Expect the " + "VM to stall at times!\n"); + } + return 0; } @@ -178,6 +193,23 @@ int kvm_arch_get_registers(CPUState *env) return 0; } +int kvmppc_set_interrupt(CPUState *env, int irq, int level) +{ + unsigned virq = level ? KVM_INTERRUPT_SET_LEVEL : KVM_INTERRUPT_UNSET; + + if (irq != PPC_INTERRUPT_EXT) { + return 0; + } + + if (!kvm_enabled() || !cap_interrupt_unset || !cap_interrupt_level) { + return 0; + } + + kvm_vcpu_ioctl(env, KVM_INTERRUPT, &virq); + + return 0; +} + #if defined(TARGET_PPCEMB) #define PPC_INPUT_INT PPC40x_INPUT_INT #elif defined(TARGET_PPC64) @@ -193,7 +225,8 @@ int kvm_arch_pre_run(CPUState *env, struct kvm_run *run) /* PowerPC Qemu tracks the various core input pins (interrupt, critical * interrupt, reset, etc) in PPC-specific env->irq_input_state. */ - if (run->ready_for_interrupt_injection && + if (!cap_interrupt_level && + run->ready_for_interrupt_injection && (env->interrupt_request & CPU_INTERRUPT_HARD) && (env->irq_input_state & (1<<PPC_INPUT_INT))) { @@ -201,7 +234,7 @@ int kvm_arch_pre_run(CPUState *env, struct kvm_run *run) * future KVM could cache it in-kernel to avoid a heavyweight exit * when reading the UIC. */ - irq = -1U; + irq = KVM_INTERRUPT_SET; dprintf("injected interrupt %d\n", irq); r = kvm_vcpu_ioctl(env, KVM_INTERRUPT, &irq); diff --git a/target-ppc/kvm_ppc.h b/target-ppc/kvm_ppc.h index 65e31c9b9e..911b19e378 100644 --- a/target-ppc/kvm_ppc.h +++ b/target-ppc/kvm_ppc.h @@ -16,5 +16,18 @@ int kvmppc_read_host_property(const char *node_path, const char *prop, uint32_t kvmppc_get_tbfreq(void); int kvmppc_get_hypercall(CPUState *env, uint8_t *buf, int buf_len); +int kvmppc_set_interrupt(CPUState *env, int irq, int level); + +#ifndef KVM_INTERRUPT_SET +#define KVM_INTERRUPT_SET -1 +#endif + +#ifndef KVM_INTERRUPT_UNSET +#define KVM_INTERRUPT_UNSET -2 +#endif + +#ifndef KVM_INTERRUPT_SET_LEVEL +#define KVM_INTERRUPT_SET_LEVEL -3 +#endif #endif /* __KVM_PPC_H__ */ |