diff options
Diffstat (limited to 'arch/powerpc/kvm/powerpc.c')
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 818 |
1 files changed, 818 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c new file mode 100644 index 00000000..00d7e345 --- /dev/null +++ b/arch/powerpc/kvm/powerpc.c @@ -0,0 +1,818 @@ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License, version 2, as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Copyright IBM Corp. 2007 + * + * Authors: Hollis Blanchard <hollisb@us.ibm.com> + * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> + */ + +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/kvm_host.h> +#include <linux/vmalloc.h> +#include <linux/hrtimer.h> +#include <linux/fs.h> +#include <linux/slab.h> +#include <asm/cputable.h> +#include <asm/uaccess.h> +#include <asm/kvm_ppc.h> +#include <asm/tlbflush.h> +#include <asm/cputhreads.h> +#include "timing.h" +#include "../mm/mmu_decl.h" + +#define CREATE_TRACE_POINTS +#include "trace.h" + +int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) +{ + return !(v->arch.shared->msr & MSR_WE) || + !!(v->arch.pending_exceptions) || + v->requests; +} + +int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) +{ + int nr = kvmppc_get_gpr(vcpu, 11); + int r; + unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); + unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); + unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); + unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); + unsigned long r2 = 0; + + if (!(vcpu->arch.shared->msr & MSR_SF)) { + /* 32 bit mode */ + param1 &= 0xffffffff; + param2 &= 0xffffffff; + param3 &= 0xffffffff; + param4 &= 0xffffffff; + } + + switch (nr) { + case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE: + { + vcpu->arch.magic_page_pa = param1; + vcpu->arch.magic_page_ea = param2; + + r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; + + r = HC_EV_SUCCESS; + break; + } + case HC_VENDOR_KVM | KVM_HC_FEATURES: + r = HC_EV_SUCCESS; +#if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500) + /* XXX Missing magic page on 44x */ + r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); +#endif + + /* Second return value is in r4 */ + break; + default: + r = HC_EV_UNIMPLEMENTED; + break; + } + + kvmppc_set_gpr(vcpu, 4, r2); + + return r; +} + +int kvmppc_sanity_check(struct kvm_vcpu *vcpu) +{ + int r = false; + + /* We have to know what CPU to virtualize */ + if (!vcpu->arch.pvr) + goto out; + + /* PAPR only works with book3s_64 */ + if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) + goto out; + +#ifdef CONFIG_KVM_BOOK3S_64_HV + /* HV KVM can only do PAPR mode for now */ + if (!vcpu->arch.papr_enabled) + goto out; +#endif + + r = true; + +out: + vcpu->arch.sane = r; + return r ? 0 : -EINVAL; +} + +int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) +{ + enum emulation_result er; + int r; + + er = kvmppc_emulate_instruction(run, vcpu); + switch (er) { + case EMULATE_DONE: + /* Future optimization: only reload non-volatiles if they were + * actually modified. */ + r = RESUME_GUEST_NV; + break; + case EMULATE_DO_MMIO: + run->exit_reason = KVM_EXIT_MMIO; + /* We must reload nonvolatiles because "update" load/store + * instructions modify register state. */ + /* Future optimization: only reload non-volatiles if they were + * actually modified. */ + r = RESUME_HOST_NV; + break; + case EMULATE_FAIL: + /* XXX Deliver Program interrupt to guest. */ + printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, + kvmppc_get_last_inst(vcpu)); + r = RESUME_HOST; + break; + default: + BUG(); + } + + return r; +} + +int kvm_arch_hardware_enable(void *garbage) +{ + return 0; +} + +void kvm_arch_hardware_disable(void *garbage) +{ +} + +int kvm_arch_hardware_setup(void) +{ + return 0; +} + +void kvm_arch_hardware_unsetup(void) +{ +} + +void kvm_arch_check_processor_compat(void *rtn) +{ + *(int *)rtn = kvmppc_core_check_processor_compat(); +} + +int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) +{ + if (type) + return -EINVAL; + + return kvmppc_core_init_vm(kvm); +} + +void kvm_arch_destroy_vm(struct kvm *kvm) +{ + unsigned int i; + struct kvm_vcpu *vcpu; + + kvm_for_each_vcpu(i, vcpu, kvm) + kvm_arch_vcpu_free(vcpu); + + mutex_lock(&kvm->lock); + for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) + kvm->vcpus[i] = NULL; + + atomic_set(&kvm->online_vcpus, 0); + + kvmppc_core_destroy_vm(kvm); + + mutex_unlock(&kvm->lock); +} + +void kvm_arch_sync_events(struct kvm *kvm) +{ +} + +int kvm_dev_ioctl_check_extension(long ext) +{ + int r; + + switch (ext) { +#ifdef CONFIG_BOOKE + case KVM_CAP_PPC_BOOKE_SREGS: +#else + case KVM_CAP_PPC_SEGSTATE: + case KVM_CAP_PPC_HIOR: + case KVM_CAP_PPC_PAPR: +#endif + case KVM_CAP_PPC_UNSET_IRQ: + case KVM_CAP_PPC_IRQ_LEVEL: + case KVM_CAP_ENABLE_CAP: + case KVM_CAP_ONE_REG: + r = 1; + break; +#ifndef CONFIG_KVM_BOOK3S_64_HV + case KVM_CAP_PPC_PAIRED_SINGLES: + case KVM_CAP_PPC_OSI: + case KVM_CAP_PPC_GET_PVINFO: +#ifdef CONFIG_KVM_E500 + case KVM_CAP_SW_TLB: +#endif + r = 1; + break; + case KVM_CAP_COALESCED_MMIO: + r = KVM_COALESCED_MMIO_PAGE_OFFSET; + break; +#endif +#ifdef CONFIG_KVM_BOOK3S_64_HV + case KVM_CAP_SPAPR_TCE: + r = 1; + break; + case KVM_CAP_PPC_SMT: + r = threads_per_core; + break; + case KVM_CAP_PPC_RMA: + r = 1; + /* PPC970 requires an RMA */ + if (cpu_has_feature(CPU_FTR_ARCH_201)) + r = 2; + break; + case KVM_CAP_SYNC_MMU: + r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; + break; +#endif + case KVM_CAP_NR_VCPUS: + /* + * Recommending a number of CPUs is somewhat arbitrary; we + * return the number of present CPUs for -HV (since a host + * will have secondary threads "offline"), and for other KVM + * implementations just count online CPUs. + */ +#ifdef CONFIG_KVM_BOOK3S_64_HV + r = num_present_cpus(); +#else + r = num_online_cpus(); +#endif + break; + case KVM_CAP_MAX_VCPUS: + r = KVM_MAX_VCPUS; + break; + default: + r = 0; + break; + } + return r; + +} + +long kvm_arch_dev_ioctl(struct file *filp, + unsigned int ioctl, unsigned long arg) +{ + return -EINVAL; +} + +void kvm_arch_free_memslot(struct kvm_memory_slot *free, + struct kvm_memory_slot *dont) +{ +} + +int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages) +{ + return 0; +} + +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, + int user_alloc) +{ + return kvmppc_core_prepare_memory_region(kvm, mem); +} + +void kvm_arch_commit_memory_region(struct kvm *kvm, + struct kvm_userspace_memory_region *mem, + struct kvm_memory_slot old, + int user_alloc) +{ + kvmppc_core_commit_memory_region(kvm, mem); +} + + +void kvm_arch_flush_shadow(struct kvm *kvm) +{ +} + +struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) +{ + struct kvm_vcpu *vcpu; + vcpu = kvmppc_core_vcpu_create(kvm, id); + if (!IS_ERR(vcpu)) { + vcpu->arch.wqp = &vcpu->wq; + kvmppc_create_vcpu_debugfs(vcpu, id); + } + return vcpu; +} + +void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) +{ + /* Make sure we're not using the vcpu anymore */ + hrtimer_cancel(&vcpu->arch.dec_timer); + tasklet_kill(&vcpu->arch.tasklet); + + kvmppc_remove_vcpu_debugfs(vcpu); + kvmppc_core_vcpu_free(vcpu); +} + +void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) +{ + kvm_arch_vcpu_free(vcpu); +} + +int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) +{ + return kvmppc_core_pending_dec(vcpu); +} + +/* + * low level hrtimer wake routine. Because this runs in hardirq context + * we schedule a tasklet to do the real work. + */ +enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) +{ + struct kvm_vcpu *vcpu; + + vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); + tasklet_schedule(&vcpu->arch.tasklet); + + return HRTIMER_NORESTART; +} + +int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) +{ + hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); + tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); + vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; + vcpu->arch.dec_expires = ~(u64)0; + +#ifdef CONFIG_KVM_EXIT_TIMING + mutex_init(&vcpu->arch.exit_timing_lock); +#endif + + return 0; +} + +void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) +{ + kvmppc_mmu_destroy(vcpu); +} + +void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) +{ +#ifdef CONFIG_BOOKE + /* + * vrsave (formerly usprg0) isn't used by Linux, but may + * be used by the guest. + * + * On non-booke this is associated with Altivec and + * is handled by code in book3s.c. + */ + mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); +#endif + kvmppc_core_vcpu_load(vcpu, cpu); + vcpu->cpu = smp_processor_id(); +} + +void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) +{ + kvmppc_core_vcpu_put(vcpu); +#ifdef CONFIG_BOOKE + vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); +#endif + vcpu->cpu = -1; +} + +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) +{ + kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); +} + +static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, + struct kvm_run *run) +{ + u64 uninitialized_var(gpr); + + if (run->mmio.len > sizeof(gpr)) { + printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); + return; + } + + if (vcpu->arch.mmio_is_bigendian) { + switch (run->mmio.len) { + case 8: gpr = *(u64 *)run->mmio.data; break; + case 4: gpr = *(u32 *)run->mmio.data; break; + case 2: gpr = *(u16 *)run->mmio.data; break; + case 1: gpr = *(u8 *)run->mmio.data; break; + } + } else { + /* Convert BE data from userland back to LE. */ + switch (run->mmio.len) { + case 4: gpr = ld_le32((u32 *)run->mmio.data); break; + case 2: gpr = ld_le16((u16 *)run->mmio.data); break; + case 1: gpr = *(u8 *)run->mmio.data; break; + } + } + + if (vcpu->arch.mmio_sign_extend) { + switch (run->mmio.len) { +#ifdef CONFIG_PPC64 + case 4: + gpr = (s64)(s32)gpr; + break; +#endif + case 2: + gpr = (s64)(s16)gpr; + break; + case 1: + gpr = (s64)(s8)gpr; + break; + } + } + + kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); + + switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { + case KVM_MMIO_REG_GPR: + kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); + break; + case KVM_MMIO_REG_FPR: + vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; + break; +#ifdef CONFIG_PPC_BOOK3S + case KVM_MMIO_REG_QPR: + vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; + break; + case KVM_MMIO_REG_FQPR: + vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; + vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; + break; +#endif + default: + BUG(); + } +} + +int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, + unsigned int rt, unsigned int bytes, int is_bigendian) +{ + if (bytes > sizeof(run->mmio.data)) { + printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, + run->mmio.len); + } + + run->mmio.phys_addr = vcpu->arch.paddr_accessed; + run->mmio.len = bytes; + run->mmio.is_write = 0; + + vcpu->arch.io_gpr = rt; + vcpu->arch.mmio_is_bigendian = is_bigendian; + vcpu->mmio_needed = 1; + vcpu->mmio_is_write = 0; + vcpu->arch.mmio_sign_extend = 0; + + return EMULATE_DO_MMIO; +} + +/* Same as above, but sign extends */ +int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, + unsigned int rt, unsigned int bytes, int is_bigendian) +{ + int r; + + r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian); + vcpu->arch.mmio_sign_extend = 1; + + return r; +} + +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; + + if (bytes > sizeof(run->mmio.data)) { + printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, + run->mmio.len); + } + + run->mmio.phys_addr = vcpu->arch.paddr_accessed; + run->mmio.len = bytes; + run->mmio.is_write = 1; + vcpu->mmio_needed = 1; + vcpu->mmio_is_write = 1; + + /* Store the value at the lowest bytes in 'data'. */ + if (is_bigendian) { + switch (bytes) { + case 8: *(u64 *)data = val; break; + case 4: *(u32 *)data = val; break; + case 2: *(u16 *)data = val; break; + case 1: *(u8 *)data = val; break; + } + } else { + /* Store LE value into 'data'. */ + switch (bytes) { + case 4: st_le32(data, val); break; + case 2: st_le16(data, val); break; + case 1: *(u8 *)data = val; break; + } + } + + return EMULATE_DO_MMIO; +} + +int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) +{ + int r; + sigset_t sigsaved; + + if (vcpu->sigset_active) + sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); + + if (vcpu->mmio_needed) { + if (!vcpu->mmio_is_write) + kvmppc_complete_mmio_load(vcpu, run); + vcpu->mmio_needed = 0; + } else if (vcpu->arch.dcr_needed) { + if (!vcpu->arch.dcr_is_write) + kvmppc_complete_dcr_load(vcpu, run); + vcpu->arch.dcr_needed = 0; + } else if (vcpu->arch.osi_needed) { + u64 *gprs = run->osi.gprs; + int i; + + for (i = 0; i < 32; i++) + kvmppc_set_gpr(vcpu, i, gprs[i]); + vcpu->arch.osi_needed = 0; + } else if (vcpu->arch.hcall_needed) { + int i; + + kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); + for (i = 0; i < 9; ++i) + kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); + vcpu->arch.hcall_needed = 0; + } + + r = kvmppc_vcpu_run(run, vcpu); + + if (vcpu->sigset_active) + sigprocmask(SIG_SETMASK, &sigsaved, NULL); + + return r; +} + +void kvm_vcpu_kick(struct kvm_vcpu *vcpu) +{ + int me; + int cpu = vcpu->cpu; + + me = get_cpu(); + if (waitqueue_active(vcpu->arch.wqp)) { + wake_up_interruptible(vcpu->arch.wqp); + vcpu->stat.halt_wakeup++; + } else if (cpu != me && cpu != -1) { + smp_send_reschedule(vcpu->cpu); + } + put_cpu(); +} + +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); + return 0; + } + + kvmppc_core_queue_external(vcpu, irq); + kvm_vcpu_kick(vcpu); + + return 0; +} + +static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, + struct kvm_enable_cap *cap) +{ + int r; + + if (cap->flags) + return -EINVAL; + + switch (cap->cap) { + case KVM_CAP_PPC_OSI: + r = 0; + vcpu->arch.osi_enabled = true; + break; + case KVM_CAP_PPC_PAPR: + r = 0; + vcpu->arch.papr_enabled = true; + break; +#ifdef CONFIG_KVM_E500 + case KVM_CAP_SW_TLB: { + struct kvm_config_tlb cfg; + void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; + + r = -EFAULT; + if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) + break; + + r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); + break; + } +#endif + default: + r = -EINVAL; + break; + } + + if (!r) + r = kvmppc_sanity_check(vcpu); + + return r; +} + +int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, + struct kvm_mp_state *mp_state) +{ + return -EINVAL; +} + +int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, + struct kvm_mp_state *mp_state) +{ + return -EINVAL; +} + +long kvm_arch_vcpu_ioctl(struct file *filp, + unsigned int ioctl, unsigned long arg) +{ + struct kvm_vcpu *vcpu = filp->private_data; + void __user *argp = (void __user *)arg; + long r; + + switch (ioctl) { + case KVM_INTERRUPT: { + struct kvm_interrupt irq; + r = -EFAULT; + if (copy_from_user(&irq, argp, sizeof(irq))) + goto out; + r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); + goto out; + } + + case KVM_ENABLE_CAP: + { + struct kvm_enable_cap cap; + r = -EFAULT; + if (copy_from_user(&cap, argp, sizeof(cap))) + goto out; + r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); + break; + } + + case KVM_SET_ONE_REG: + case KVM_GET_ONE_REG: + { + struct kvm_one_reg reg; + r = -EFAULT; + if (copy_from_user(®, argp, sizeof(reg))) + goto out; + if (ioctl == KVM_SET_ONE_REG) + r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); + else + r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); + break; + } + +#ifdef CONFIG_KVM_E500 + case KVM_DIRTY_TLB: { + struct kvm_dirty_tlb dirty; + r = -EFAULT; + if (copy_from_user(&dirty, argp, sizeof(dirty))) + goto out; + r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); + break; + } +#endif + + default: + r = -EINVAL; + } + +out: + return r; +} + +int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) +{ + return VM_FAULT_SIGBUS; +} + +static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) +{ + u32 inst_lis = 0x3c000000; + u32 inst_ori = 0x60000000; + u32 inst_nop = 0x60000000; + u32 inst_sc = 0x44000002; + u32 inst_imm_mask = 0xffff; + + /* + * The hypercall to get into KVM from within guest context is as + * follows: + * + * lis r0, r0, KVM_SC_MAGIC_R0@h + * ori r0, KVM_SC_MAGIC_R0@l + * sc + * nop + */ + pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask); + pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask); + pvinfo->hcall[2] = inst_sc; + pvinfo->hcall[3] = inst_nop; + + return 0; +} + +long kvm_arch_vm_ioctl(struct file *filp, + unsigned int ioctl, unsigned long arg) +{ + void __user *argp = (void __user *)arg; + long r; + + switch (ioctl) { + case KVM_PPC_GET_PVINFO: { + struct kvm_ppc_pvinfo pvinfo; + memset(&pvinfo, 0, sizeof(pvinfo)); + r = kvm_vm_ioctl_get_pvinfo(&pvinfo); + if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { + r = -EFAULT; + goto out; + } + + break; + } +#ifdef CONFIG_KVM_BOOK3S_64_HV + 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))) + goto out; + r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); + goto out; + } + + case KVM_ALLOCATE_RMA: { + struct kvm *kvm = filp->private_data; + struct kvm_allocate_rma rma; + + r = kvm_vm_ioctl_allocate_rma(kvm, &rma); + if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) + r = -EFAULT; + break; + } +#endif /* CONFIG_KVM_BOOK3S_64_HV */ + + default: + r = -ENOTTY; + } + +out: + return r; +} + +int kvm_arch_init(void *opaque) +{ + return 0; +} + +void kvm_arch_exit(void) +{ +} |