diff options
Diffstat (limited to 'arch/loongarch/kvm/vcpu.c')
-rw-r--r-- | arch/loongarch/kvm/vcpu.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c index b16fe2913e11..73d0c2b9c1a5 100644 --- a/arch/loongarch/kvm/vcpu.c +++ b/arch/loongarch/kvm/vcpu.c @@ -13,6 +13,23 @@ #define CREATE_TRACE_POINTS #include "trace.h" +const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { + KVM_GENERIC_VCPU_STATS(), + STATS_DESC_COUNTER(VCPU, int_exits), + STATS_DESC_COUNTER(VCPU, idle_exits), + STATS_DESC_COUNTER(VCPU, cpucfg_exits), + STATS_DESC_COUNTER(VCPU, signal_exits), +}; + +const struct kvm_stats_header kvm_vcpu_stats_header = { + .name_size = KVM_STATS_NAME_SIZE, + .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc), + .id_offset = sizeof(struct kvm_stats_header), + .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE, + .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE + + sizeof(kvm_vcpu_stats_desc), +}; + /* * kvm_check_requests - check and handle pending vCPU requests * @@ -141,6 +158,109 @@ static int kvm_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu) return RESUME_GUEST; } +int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu) +{ + return !!(vcpu->arch.irq_pending) && + vcpu->arch.mp_state.mp_state == KVM_MP_STATE_RUNNABLE; +} + +int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) +{ + return kvm_vcpu_exiting_guest_mode(vcpu) == IN_GUEST_MODE; +} + +bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu) +{ + return false; +} + +vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) +{ + return VM_FAULT_SIGBUS; +} + +int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, + struct kvm_translation *tr) +{ + return -EINVAL; +} + +int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) +{ + return kvm_pending_timer(vcpu) || + kvm_read_hw_gcsr(LOONGARCH_CSR_ESTAT) & (1 << INT_TI); +} + +int kvm_arch_vcpu_dump_regs(struct kvm_vcpu *vcpu) +{ + int i; + + kvm_debug("vCPU Register Dump:\n"); + kvm_debug("\tPC = 0x%08lx\n", vcpu->arch.pc); + kvm_debug("\tExceptions: %08lx\n", vcpu->arch.irq_pending); + + for (i = 0; i < 32; i += 4) { + kvm_debug("\tGPR%02d: %08lx %08lx %08lx %08lx\n", i, + vcpu->arch.gprs[i], vcpu->arch.gprs[i + 1], + vcpu->arch.gprs[i + 2], vcpu->arch.gprs[i + 3]); + } + + kvm_debug("\tCRMD: 0x%08lx, ESTAT: 0x%08lx\n", + kvm_read_hw_gcsr(LOONGARCH_CSR_CRMD), + kvm_read_hw_gcsr(LOONGARCH_CSR_ESTAT)); + + kvm_debug("\tERA: 0x%08lx\n", kvm_read_hw_gcsr(LOONGARCH_CSR_ERA)); + + return 0; +} + +int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, + struct kvm_mp_state *mp_state) +{ + *mp_state = vcpu->arch.mp_state; + + return 0; +} + +int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, + struct kvm_mp_state *mp_state) +{ + int ret = 0; + + switch (mp_state->mp_state) { + case KVM_MP_STATE_RUNNABLE: + vcpu->arch.mp_state = *mp_state; + break; + default: + ret = -EINVAL; + } + + return ret; +} + +int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, + struct kvm_guest_debug *dbg) +{ + return -EINVAL; +} + +/** + * kvm_migrate_count() - Migrate timer. + * @vcpu: Virtual CPU. + * + * Migrate hrtimer to the current CPU by cancelling and restarting it + * if the hrtimer is active. + * + * Must be called when the vCPU is migrated to a different CPU, so that + * the timer can interrupt the guest at the new CPU, and the timer irq can + * be delivered to the vCPU. + */ +static void kvm_migrate_count(struct kvm_vcpu *vcpu) +{ + if (hrtimer_cancel(&vcpu->arch.swtimer)) + hrtimer_restart(&vcpu->arch.swtimer); +} + static int _kvm_getcsr(struct kvm_vcpu *vcpu, unsigned int id, u64 *val) { unsigned long gintc; |