diff options
Diffstat (limited to 'arch/powerpc/kvm/powerpc.c')
-rw-r--r-- | arch/powerpc/kvm/powerpc.c | 133 |
1 files changed, 108 insertions, 25 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 934413cd3a1b..6316ee336e88 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -25,6 +25,7 @@ #include <linux/hrtimer.h> #include <linux/fs.h> #include <linux/slab.h> +#include <linux/file.h> #include <asm/cputable.h> #include <asm/uaccess.h> #include <asm/kvm_ppc.h> @@ -32,6 +33,7 @@ #include <asm/cputhreads.h> #include <asm/irqflags.h> #include "timing.h" +#include "irq.h" #include "../mm/mmu_decl.h" #define CREATE_TRACE_POINTS @@ -317,6 +319,7 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_ENABLE_CAP: case KVM_CAP_ONE_REG: case KVM_CAP_IOEVENTFD: + case KVM_CAP_DEVICE_CTRL: r = 1; break; #ifndef CONFIG_KVM_BOOK3S_64_HV @@ -326,6 +329,9 @@ int kvm_dev_ioctl_check_extension(long ext) #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) case KVM_CAP_SW_TLB: #endif +#ifdef CONFIG_KVM_MPIC + case KVM_CAP_IRQ_MPIC: +#endif r = 1; break; case KVM_CAP_COALESCED_MMIO: @@ -335,6 +341,10 @@ int kvm_dev_ioctl_check_extension(long ext) #ifdef CONFIG_PPC_BOOK3S_64 case KVM_CAP_SPAPR_TCE: case KVM_CAP_PPC_ALLOC_HTAB: + case KVM_CAP_PPC_RTAS: +#ifdef CONFIG_KVM_XICS + case KVM_CAP_IRQ_XICS: +#endif r = 1; break; #endif /* CONFIG_PPC_BOOK3S_64 */ @@ -411,18 +421,17 @@ int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) } int kvm_arch_prepare_memory_region(struct kvm *kvm, - struct kvm_memory_slot *memslot, - struct kvm_memory_slot old, - struct kvm_userspace_memory_region *mem, - bool user_alloc) + struct kvm_memory_slot *memslot, + struct kvm_userspace_memory_region *mem, + enum kvm_mr_change change) { return kvmppc_core_prepare_memory_region(kvm, memslot, mem); } void kvm_arch_commit_memory_region(struct kvm *kvm, - struct kvm_userspace_memory_region *mem, - struct kvm_memory_slot old, - bool user_alloc) + struct kvm_userspace_memory_region *mem, + const struct kvm_memory_slot *old, + enum kvm_mr_change change) { kvmppc_core_commit_memory_region(kvm, mem, old); } @@ -460,6 +469,16 @@ void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) tasklet_kill(&vcpu->arch.tasklet); kvmppc_remove_vcpu_debugfs(vcpu); + + switch (vcpu->arch.irq_type) { + case KVMPPC_IRQ_MPIC: + kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu); + break; + case KVMPPC_IRQ_XICS: + kvmppc_xics_free_icp(vcpu); + break; + } + kvmppc_core_vcpu_free(vcpu); } @@ -532,12 +551,6 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) #endif } -int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, - struct kvm_guest_debug *dbg) -{ - return -EINVAL; -} - static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, struct kvm_run *run) { @@ -612,6 +625,8 @@ static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, unsigned int rt, unsigned int bytes, int is_bigendian) { + int idx, ret; + if (bytes > sizeof(run->mmio.data)) { printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, run->mmio.len); @@ -627,8 +642,14 @@ int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, vcpu->mmio_is_write = 0; vcpu->arch.mmio_sign_extend = 0; - if (!kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, - bytes, &run->mmio.data)) { + idx = srcu_read_lock(&vcpu->kvm->srcu); + + ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, + bytes, &run->mmio.data); + + srcu_read_unlock(&vcpu->kvm->srcu, idx); + + if (!ret) { kvmppc_complete_mmio_load(vcpu, run); vcpu->mmio_needed = 0; return EMULATE_DONE; @@ -653,6 +674,7 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, u64 val, unsigned int bytes, int is_bigendian) { void *data = run->mmio.data; + int idx, ret; if (bytes > sizeof(run->mmio.data)) { printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, @@ -682,9 +704,14 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, } } - if (!kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, - bytes, &run->mmio.data)) { - kvmppc_complete_mmio_load(vcpu, run); + idx = srcu_read_lock(&vcpu->kvm->srcu); + + ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, + bytes, &run->mmio.data); + + srcu_read_unlock(&vcpu->kvm->srcu, idx); + + if (!ret) { vcpu->mmio_needed = 0; return EMULATE_DONE; } @@ -740,7 +767,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { if (irq->irq == KVM_INTERRUPT_UNSET) { - kvmppc_core_dequeue_external(vcpu, irq); + kvmppc_core_dequeue_external(vcpu); return 0; } @@ -770,7 +797,10 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, break; case KVM_CAP_PPC_EPR: r = 0; - vcpu->arch.epr_enabled = cap->args[0]; + if (cap->args[0]) + vcpu->arch.epr_flags |= KVMPPC_EPR_USER; + else + vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER; break; #ifdef CONFIG_BOOKE case KVM_CAP_PPC_BOOKE_WATCHDOG: @@ -791,6 +821,44 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, break; } #endif +#ifdef CONFIG_KVM_MPIC + case KVM_CAP_IRQ_MPIC: { + struct file *filp; + struct kvm_device *dev; + + r = -EBADF; + filp = fget(cap->args[0]); + if (!filp) + break; + + r = -EPERM; + dev = kvm_device_from_filp(filp); + if (dev) + r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]); + + fput(filp); + break; + } +#endif +#ifdef CONFIG_KVM_XICS + case KVM_CAP_IRQ_XICS: { + struct file *filp; + struct kvm_device *dev; + + r = -EBADF; + filp = fget(cap->args[0]); + if (!filp) + break; + + r = -EPERM; + dev = kvm_device_from_filp(filp); + if (dev) + r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]); + + fput(filp); + break; + } +#endif /* CONFIG_KVM_XICS */ default: r = -EINVAL; break; @@ -913,9 +981,22 @@ static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) return 0; } +int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, + bool line_status) +{ + if (!irqchip_in_kernel(kvm)) + return -ENXIO; + + irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, + irq_event->irq, irq_event->level, + line_status); + return 0; +} + long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { + struct kvm *kvm __maybe_unused = filp->private_data; void __user *argp = (void __user *)arg; long r; @@ -934,7 +1015,6 @@ long kvm_arch_vm_ioctl(struct file *filp, #ifdef CONFIG_PPC_BOOK3S_64 case KVM_CREATE_SPAPR_TCE: { struct kvm_create_spapr_tce create_tce; - struct kvm *kvm = filp->private_data; r = -EFAULT; if (copy_from_user(&create_tce, argp, sizeof(create_tce))) @@ -946,8 +1026,8 @@ long kvm_arch_vm_ioctl(struct file *filp, #ifdef CONFIG_KVM_BOOK3S_64_HV case KVM_ALLOCATE_RMA: { - struct kvm *kvm = filp->private_data; struct kvm_allocate_rma rma; + struct kvm *kvm = filp->private_data; r = kvm_vm_ioctl_allocate_rma(kvm, &rma); if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) @@ -956,7 +1036,6 @@ long kvm_arch_vm_ioctl(struct file *filp, } case KVM_PPC_ALLOCATE_HTAB: { - struct kvm *kvm = filp->private_data; u32 htab_order; r = -EFAULT; @@ -973,7 +1052,6 @@ long kvm_arch_vm_ioctl(struct file *filp, } case KVM_PPC_GET_HTAB_FD: { - struct kvm *kvm = filp->private_data; struct kvm_get_htab_fd ghf; r = -EFAULT; @@ -986,7 +1064,6 @@ long kvm_arch_vm_ioctl(struct file *filp, #ifdef CONFIG_PPC_BOOK3S_64 case KVM_PPC_GET_SMMU_INFO: { - struct kvm *kvm = filp->private_data; struct kvm_ppc_smmu_info info; memset(&info, 0, sizeof(info)); @@ -995,6 +1072,12 @@ long kvm_arch_vm_ioctl(struct file *filp, r = -EFAULT; break; } + case KVM_PPC_RTAS_DEFINE_TOKEN: { + struct kvm *kvm = filp->private_data; + + r = kvm_vm_ioctl_rtas_define_token(kvm, argp); + break; + } #endif /* CONFIG_PPC_BOOK3S_64 */ default: r = -ENOTTY; 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