| /* | |
| * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved. | |
| * | |
| * Authors: | |
| * Alexander Graf <agraf@suse.de> | |
| * Kevin Wolf <mail@kevin-wolf.de> | |
| * | |
| * Description: | |
| * This file is derived from arch/powerpc/kvm/44x.c, | |
| * by Hollis Blanchard <hollisb@us.ibm.com>. | |
| * | |
| * 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. | |
| */ | |
| #include <linux/kvm_host.h> | |
| #include <linux/err.h> | |
| #include <linux/export.h> | |
| #include <linux/slab.h> | |
| #include <linux/module.h> | |
| #include <linux/miscdevice.h> | |
| #include <asm/reg.h> | |
| #include <asm/cputable.h> | |
| #include <asm/cacheflush.h> | |
| #include <asm/tlbflush.h> | |
| #include <asm/uaccess.h> | |
| #include <asm/io.h> | |
| #include <asm/kvm_ppc.h> | |
| #include <asm/kvm_book3s.h> | |
| #include <asm/mmu_context.h> | |
| #include <asm/page.h> | |
| #include <linux/gfp.h> | |
| #include <linux/sched.h> | |
| #include <linux/vmalloc.h> | |
| #include <linux/highmem.h> | |
| #include "book3s.h" | |
| #include "trace.h" | |
| #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU | |
| /* #define EXIT_DEBUG */ | |
| struct kvm_stats_debugfs_item debugfs_entries[] = { | |
| { "exits", VCPU_STAT(sum_exits) }, | |
| { "mmio", VCPU_STAT(mmio_exits) }, | |
| { "sig", VCPU_STAT(signal_exits) }, | |
| { "sysc", VCPU_STAT(syscall_exits) }, | |
| { "inst_emu", VCPU_STAT(emulated_inst_exits) }, | |
| { "dec", VCPU_STAT(dec_exits) }, | |
| { "ext_intr", VCPU_STAT(ext_intr_exits) }, | |
| { "queue_intr", VCPU_STAT(queue_intr) }, | |
| { "halt_successful_poll", VCPU_STAT(halt_successful_poll), }, | |
| { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), }, | |
| { "halt_wakeup", VCPU_STAT(halt_wakeup) }, | |
| { "pf_storage", VCPU_STAT(pf_storage) }, | |
| { "sp_storage", VCPU_STAT(sp_storage) }, | |
| { "pf_instruc", VCPU_STAT(pf_instruc) }, | |
| { "sp_instruc", VCPU_STAT(sp_instruc) }, | |
| { "ld", VCPU_STAT(ld) }, | |
| { "ld_slow", VCPU_STAT(ld_slow) }, | |
| { "st", VCPU_STAT(st) }, | |
| { "st_slow", VCPU_STAT(st_slow) }, | |
| { NULL } | |
| }; | |
| void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu) | |
| { | |
| if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) { | |
| ulong pc = kvmppc_get_pc(vcpu); | |
| if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS) | |
| kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK); | |
| vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK; | |
| } | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real); | |
| static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu) | |
| { | |
| if (!is_kvmppc_hv_enabled(vcpu->kvm)) | |
| return to_book3s(vcpu)->hior; | |
| return 0; | |
| } | |
| static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, | |
| unsigned long pending_now, unsigned long old_pending) | |
| { | |
| if (is_kvmppc_hv_enabled(vcpu->kvm)) | |
| return; | |
| if (pending_now) | |
| kvmppc_set_int_pending(vcpu, 1); | |
| else if (old_pending) | |
| kvmppc_set_int_pending(vcpu, 0); | |
| } | |
| static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu) | |
| { | |
| ulong crit_raw; | |
| ulong crit_r1; | |
| bool crit; | |
| if (is_kvmppc_hv_enabled(vcpu->kvm)) | |
| return false; | |
| crit_raw = kvmppc_get_critical(vcpu); | |
| crit_r1 = kvmppc_get_gpr(vcpu, 1); | |
| /* Truncate crit indicators in 32 bit mode */ | |
| if (!(kvmppc_get_msr(vcpu) & MSR_SF)) { | |
| crit_raw &= 0xffffffff; | |
| crit_r1 &= 0xffffffff; | |
| } | |
| /* Critical section when crit == r1 */ | |
| crit = (crit_raw == crit_r1); | |
| /* ... and we're in supervisor mode */ | |
| crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR); | |
| return crit; | |
| } | |
| void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags) | |
| { | |
| kvmppc_unfixup_split_real(vcpu); | |
| kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu)); | |
| kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags); | |
| kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec); | |
| vcpu->arch.mmu.reset_msr(vcpu); | |
| } | |
| static int kvmppc_book3s_vec2irqprio(unsigned int vec) | |
| { | |
| unsigned int prio; | |
| switch (vec) { | |
| case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break; | |
| case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break; | |
| case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break; | |
| case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break; | |
| case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break; | |
| case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break; | |
| case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break; | |
| case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break; | |
| case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break; | |
| case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break; | |
| case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break; | |
| case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break; | |
| case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break; | |
| case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break; | |
| case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break; | |
| case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break; | |
| case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL; break; | |
| default: prio = BOOK3S_IRQPRIO_MAX; break; | |
| } | |
| return prio; | |
| } | |
| void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu, | |
| unsigned int vec) | |
| { | |
| unsigned long old_pending = vcpu->arch.pending_exceptions; | |
| clear_bit(kvmppc_book3s_vec2irqprio(vec), | |
| &vcpu->arch.pending_exceptions); | |
| kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions, | |
| old_pending); | |
| } | |
| void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec) | |
| { | |
| vcpu->stat.queue_intr++; | |
| set_bit(kvmppc_book3s_vec2irqprio(vec), | |
| &vcpu->arch.pending_exceptions); | |
| #ifdef EXIT_DEBUG | |
| printk(KERN_INFO "Queueing interrupt %x\n", vec); | |
| #endif | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio); | |
| void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags) | |
| { | |
| /* might as well deliver this straight away */ | |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags); | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_core_queue_program); | |
| void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu) | |
| { | |
| kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec); | |
| int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu) | |
| { | |
| return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions); | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec); | |
| void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) | |
| { | |
| kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER); | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec); | |
| void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, | |
| struct kvm_interrupt *irq) | |
| { | |
| unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL; | |
| if (irq->irq == KVM_INTERRUPT_SET_LEVEL) | |
| vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL; | |
| kvmppc_book3s_queue_irqprio(vcpu, vec); | |
| } | |
| void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu) | |
| { | |
| kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); | |
| kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL); | |
| } | |
| void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar, | |
| ulong flags) | |
| { | |
| kvmppc_set_dar(vcpu, dar); | |
| kvmppc_set_dsisr(vcpu, flags); | |
| kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE); | |
| } | |
| void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags) | |
| { | |
| u64 msr = kvmppc_get_msr(vcpu); | |
| msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT); | |
| msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT); | |
| kvmppc_set_msr_fast(vcpu, msr); | |
| kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE); | |
| } | |
| static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, | |
| unsigned int priority) | |
| { | |
| int deliver = 1; | |
| int vec = 0; | |
| bool crit = kvmppc_critical_section(vcpu); | |
| switch (priority) { | |
| case BOOK3S_IRQPRIO_DECREMENTER: | |
| deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; | |
| vec = BOOK3S_INTERRUPT_DECREMENTER; | |
| break; | |
| case BOOK3S_IRQPRIO_EXTERNAL: | |
| case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: | |
| deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; | |
| vec = BOOK3S_INTERRUPT_EXTERNAL; | |
| break; | |
| case BOOK3S_IRQPRIO_SYSTEM_RESET: | |
| vec = BOOK3S_INTERRUPT_SYSTEM_RESET; | |
| break; | |
| case BOOK3S_IRQPRIO_MACHINE_CHECK: | |
| vec = BOOK3S_INTERRUPT_MACHINE_CHECK; | |
| break; | |
| case BOOK3S_IRQPRIO_DATA_STORAGE: | |
| vec = BOOK3S_INTERRUPT_DATA_STORAGE; | |
| break; | |
| case BOOK3S_IRQPRIO_INST_STORAGE: | |
| vec = BOOK3S_INTERRUPT_INST_STORAGE; | |
| break; | |
| case BOOK3S_IRQPRIO_DATA_SEGMENT: | |
| vec = BOOK3S_INTERRUPT_DATA_SEGMENT; | |
| break; | |
| case BOOK3S_IRQPRIO_INST_SEGMENT: | |
| vec = BOOK3S_INTERRUPT_INST_SEGMENT; | |
| break; | |
| case BOOK3S_IRQPRIO_ALIGNMENT: | |
| vec = BOOK3S_INTERRUPT_ALIGNMENT; | |
| break; | |
| case BOOK3S_IRQPRIO_PROGRAM: | |
| vec = BOOK3S_INTERRUPT_PROGRAM; | |
| break; | |
| case BOOK3S_IRQPRIO_VSX: | |
| vec = BOOK3S_INTERRUPT_VSX; | |
| break; | |
| case BOOK3S_IRQPRIO_ALTIVEC: | |
| vec = BOOK3S_INTERRUPT_ALTIVEC; | |
| break; | |
| case BOOK3S_IRQPRIO_FP_UNAVAIL: | |
| vec = BOOK3S_INTERRUPT_FP_UNAVAIL; | |
| break; | |
| case BOOK3S_IRQPRIO_SYSCALL: | |
| vec = BOOK3S_INTERRUPT_SYSCALL; | |
| break; | |
| case BOOK3S_IRQPRIO_DEBUG: | |
| vec = BOOK3S_INTERRUPT_TRACE; | |
| break; | |
| case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR: | |
| vec = BOOK3S_INTERRUPT_PERFMON; | |
| break; | |
| case BOOK3S_IRQPRIO_FAC_UNAVAIL: | |
| vec = BOOK3S_INTERRUPT_FAC_UNAVAIL; | |
| break; | |
| default: | |
| deliver = 0; | |
| printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority); | |
| break; | |
| } | |
| #if 0 | |
| printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver); | |
| #endif | |
| if (deliver) | |
| kvmppc_inject_interrupt(vcpu, vec, 0); | |
| return deliver; | |
| } | |
| /* | |
| * This function determines if an irqprio should be cleared once issued. | |
| */ | |
| static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority) | |
| { | |
| switch (priority) { | |
| case BOOK3S_IRQPRIO_DECREMENTER: | |
| /* DEC interrupts get cleared by mtdec */ | |
| return false; | |
| case BOOK3S_IRQPRIO_EXTERNAL_LEVEL: | |
| /* External interrupts get cleared by userspace */ | |
| return false; | |
| } | |
| return true; | |
| } | |
| int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu) | |
| { | |
| unsigned long *pending = &vcpu->arch.pending_exceptions; | |
| unsigned long old_pending = vcpu->arch.pending_exceptions; | |
| unsigned int priority; | |
| #ifdef EXIT_DEBUG | |
| if (vcpu->arch.pending_exceptions) | |
| printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions); | |
| #endif | |
| priority = __ffs(*pending); | |
| while (priority < BOOK3S_IRQPRIO_MAX) { | |
| if (kvmppc_book3s_irqprio_deliver(vcpu, priority) && | |
| clear_irqprio(vcpu, priority)) { | |
| clear_bit(priority, &vcpu->arch.pending_exceptions); | |
| break; | |
| } | |
| priority = find_next_bit(pending, | |
| BITS_PER_BYTE * sizeof(*pending), | |
| priority + 1); | |
| } | |
| /* Tell the guest about our interrupt status */ | |
| kvmppc_update_int_pending(vcpu, *pending, old_pending); | |
| return 0; | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter); | |
| pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing, | |
| bool *writable) | |
| { | |
| ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM; | |
| gfn_t gfn = gpa >> PAGE_SHIFT; | |
| if (!(kvmppc_get_msr(vcpu) & MSR_SF)) | |
| mp_pa = (uint32_t)mp_pa; | |
| /* Magic page override */ | |
| gpa &= ~0xFFFULL; | |
| if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) { | |
| ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK; | |
| pfn_t pfn; | |
| pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT; | |
| get_page(pfn_to_page(pfn)); | |
| if (writable) | |
| *writable = true; | |
| return pfn; | |
| } | |
| return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable); | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn); | |
| int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid, | |
| enum xlate_readwrite xlrw, struct kvmppc_pte *pte) | |
| { | |
| bool data = (xlid == XLATE_DATA); | |
| bool iswrite = (xlrw == XLATE_WRITE); | |
| int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR)); | |
| int r; | |
| if (relocated) { | |
| r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite); | |
| } else { | |
| pte->eaddr = eaddr; | |
| pte->raddr = eaddr & KVM_PAM; | |
| pte->vpage = VSID_REAL | eaddr >> 12; | |
| pte->may_read = true; | |
| pte->may_write = true; | |
| pte->may_execute = true; | |
| r = 0; | |
| if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR && | |
| !data) { | |
| if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) && | |
| ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)) | |
| pte->raddr &= ~SPLIT_HACK_MASK; | |
| } | |
| } | |
| return r; | |
| } | |
| int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type, | |
| u32 *inst) | |
| { | |
| ulong pc = kvmppc_get_pc(vcpu); | |
| int r; | |
| if (type == INST_SC) | |
| pc -= 4; | |
| r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false); | |
| if (r == EMULATE_DONE) | |
| return r; | |
| else | |
| return EMULATE_AGAIN; | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_load_last_inst); | |
| int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) | |
| { | |
| return 0; | |
| } | |
| int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu) | |
| { | |
| return 0; | |
| } | |
| void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu) | |
| { | |
| } | |
| int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, | |
| struct kvm_sregs *sregs) | |
| { | |
| return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); | |
| } | |
| int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, | |
| struct kvm_sregs *sregs) | |
| { | |
| return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); | |
| } | |
| int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
| { | |
| int i; | |
| regs->pc = kvmppc_get_pc(vcpu); | |
| regs->cr = kvmppc_get_cr(vcpu); | |
| regs->ctr = kvmppc_get_ctr(vcpu); | |
| regs->lr = kvmppc_get_lr(vcpu); | |
| regs->xer = kvmppc_get_xer(vcpu); | |
| regs->msr = kvmppc_get_msr(vcpu); | |
| regs->srr0 = kvmppc_get_srr0(vcpu); | |
| regs->srr1 = kvmppc_get_srr1(vcpu); | |
| regs->pid = vcpu->arch.pid; | |
| regs->sprg0 = kvmppc_get_sprg0(vcpu); | |
| regs->sprg1 = kvmppc_get_sprg1(vcpu); | |
| regs->sprg2 = kvmppc_get_sprg2(vcpu); | |
| regs->sprg3 = kvmppc_get_sprg3(vcpu); | |
| regs->sprg4 = kvmppc_get_sprg4(vcpu); | |
| regs->sprg5 = kvmppc_get_sprg5(vcpu); | |
| regs->sprg6 = kvmppc_get_sprg6(vcpu); | |
| regs->sprg7 = kvmppc_get_sprg7(vcpu); | |
| for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) | |
| regs->gpr[i] = kvmppc_get_gpr(vcpu, i); | |
| return 0; | |
| } | |
| int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) | |
| { | |
| int i; | |
| kvmppc_set_pc(vcpu, regs->pc); | |
| kvmppc_set_cr(vcpu, regs->cr); | |
| kvmppc_set_ctr(vcpu, regs->ctr); | |
| kvmppc_set_lr(vcpu, regs->lr); | |
| kvmppc_set_xer(vcpu, regs->xer); | |
| kvmppc_set_msr(vcpu, regs->msr); | |
| kvmppc_set_srr0(vcpu, regs->srr0); | |
| kvmppc_set_srr1(vcpu, regs->srr1); | |
| kvmppc_set_sprg0(vcpu, regs->sprg0); | |
| kvmppc_set_sprg1(vcpu, regs->sprg1); | |
| kvmppc_set_sprg2(vcpu, regs->sprg2); | |
| kvmppc_set_sprg3(vcpu, regs->sprg3); | |
| kvmppc_set_sprg4(vcpu, regs->sprg4); | |
| kvmppc_set_sprg5(vcpu, regs->sprg5); | |
| kvmppc_set_sprg6(vcpu, regs->sprg6); | |
| kvmppc_set_sprg7(vcpu, regs->sprg7); | |
| for (i = 0; i < ARRAY_SIZE(regs->gpr); i++) | |
| kvmppc_set_gpr(vcpu, i, regs->gpr[i]); | |
| return 0; | |
| } | |
| int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) | |
| { | |
| return -ENOTSUPP; | |
| } | |
| int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) | |
| { | |
| return -ENOTSUPP; | |
| } | |
| int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id, | |
| union kvmppc_one_reg *val) | |
| { | |
| int r = 0; | |
| long int i; | |
| r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val); | |
| if (r == -EINVAL) { | |
| r = 0; | |
| switch (id) { | |
| case KVM_REG_PPC_DAR: | |
| *val = get_reg_val(id, kvmppc_get_dar(vcpu)); | |
| break; | |
| case KVM_REG_PPC_DSISR: | |
| *val = get_reg_val(id, kvmppc_get_dsisr(vcpu)); | |
| break; | |
| case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: | |
| i = id - KVM_REG_PPC_FPR0; | |
| *val = get_reg_val(id, VCPU_FPR(vcpu, i)); | |
| break; | |
| case KVM_REG_PPC_FPSCR: | |
| *val = get_reg_val(id, vcpu->arch.fp.fpscr); | |
| break; | |
| #ifdef CONFIG_VSX | |
| case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: | |
| if (cpu_has_feature(CPU_FTR_VSX)) { | |
| i = id - KVM_REG_PPC_VSR0; | |
| val->vsxval[0] = vcpu->arch.fp.fpr[i][0]; | |
| val->vsxval[1] = vcpu->arch.fp.fpr[i][1]; | |
| } else { | |
| r = -ENXIO; | |
| } | |
| break; | |
| #endif /* CONFIG_VSX */ | |
| case KVM_REG_PPC_DEBUG_INST: | |
| *val = get_reg_val(id, INS_TW); | |
| break; | |
| #ifdef CONFIG_KVM_XICS | |
| case KVM_REG_PPC_ICP_STATE: | |
| if (!vcpu->arch.icp) { | |
| r = -ENXIO; | |
| break; | |
| } | |
| *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu)); | |
| break; | |
| #endif /* CONFIG_KVM_XICS */ | |
| case KVM_REG_PPC_FSCR: | |
| *val = get_reg_val(id, vcpu->arch.fscr); | |
| break; | |
| case KVM_REG_PPC_TAR: | |
| *val = get_reg_val(id, vcpu->arch.tar); | |
| break; | |
| case KVM_REG_PPC_EBBHR: | |
| *val = get_reg_val(id, vcpu->arch.ebbhr); | |
| break; | |
| case KVM_REG_PPC_EBBRR: | |
| *val = get_reg_val(id, vcpu->arch.ebbrr); | |
| break; | |
| case KVM_REG_PPC_BESCR: | |
| *val = get_reg_val(id, vcpu->arch.bescr); | |
| break; | |
| case KVM_REG_PPC_VTB: | |
| *val = get_reg_val(id, vcpu->arch.vtb); | |
| break; | |
| case KVM_REG_PPC_IC: | |
| *val = get_reg_val(id, vcpu->arch.ic); | |
| break; | |
| default: | |
| r = -EINVAL; | |
| break; | |
| } | |
| } | |
| return r; | |
| } | |
| int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id, | |
| union kvmppc_one_reg *val) | |
| { | |
| int r = 0; | |
| long int i; | |
| r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val); | |
| if (r == -EINVAL) { | |
| r = 0; | |
| switch (id) { | |
| case KVM_REG_PPC_DAR: | |
| kvmppc_set_dar(vcpu, set_reg_val(id, *val)); | |
| break; | |
| case KVM_REG_PPC_DSISR: | |
| kvmppc_set_dsisr(vcpu, set_reg_val(id, *val)); | |
| break; | |
| case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: | |
| i = id - KVM_REG_PPC_FPR0; | |
| VCPU_FPR(vcpu, i) = set_reg_val(id, *val); | |
| break; | |
| case KVM_REG_PPC_FPSCR: | |
| vcpu->arch.fp.fpscr = set_reg_val(id, *val); | |
| break; | |
| #ifdef CONFIG_VSX | |
| case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: | |
| if (cpu_has_feature(CPU_FTR_VSX)) { | |
| i = id - KVM_REG_PPC_VSR0; | |
| vcpu->arch.fp.fpr[i][0] = val->vsxval[0]; | |
| vcpu->arch.fp.fpr[i][1] = val->vsxval[1]; | |
| } else { | |
| r = -ENXIO; | |
| } | |
| break; | |
| #endif /* CONFIG_VSX */ | |
| #ifdef CONFIG_KVM_XICS | |
| case KVM_REG_PPC_ICP_STATE: | |
| if (!vcpu->arch.icp) { | |
| r = -ENXIO; | |
| break; | |
| } | |
| r = kvmppc_xics_set_icp(vcpu, | |
| set_reg_val(id, *val)); | |
| break; | |
| #endif /* CONFIG_KVM_XICS */ | |
| case KVM_REG_PPC_FSCR: | |
| vcpu->arch.fscr = set_reg_val(id, *val); | |
| break; | |
| case KVM_REG_PPC_TAR: | |
| vcpu->arch.tar = set_reg_val(id, *val); | |
| break; | |
| case KVM_REG_PPC_EBBHR: | |
| vcpu->arch.ebbhr = set_reg_val(id, *val); | |
| break; | |
| case KVM_REG_PPC_EBBRR: | |
| vcpu->arch.ebbrr = set_reg_val(id, *val); | |
| break; | |
| case KVM_REG_PPC_BESCR: | |
| vcpu->arch.bescr = set_reg_val(id, *val); | |
| break; | |
| case KVM_REG_PPC_VTB: | |
| vcpu->arch.vtb = set_reg_val(id, *val); | |
| break; | |
| case KVM_REG_PPC_IC: | |
| vcpu->arch.ic = set_reg_val(id, *val); | |
| break; | |
| default: | |
| r = -EINVAL; | |
| break; | |
| } | |
| } | |
| return r; | |
| } | |
| void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) | |
| { | |
| vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu); | |
| } | |
| void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) | |
| { | |
| vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu); | |
| } | |
| void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) | |
| { | |
| vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr); | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_set_msr); | |
| int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) | |
| { | |
| return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu); | |
| } | |
| int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, | |
| struct kvm_translation *tr) | |
| { | |
| return 0; | |
| } | |
| int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, | |
| struct kvm_guest_debug *dbg) | |
| { | |
| vcpu->guest_debug = dbg->control; | |
| return 0; | |
| } | |
| void kvmppc_decrementer_func(struct kvm_vcpu *vcpu) | |
| { | |
| kvmppc_core_queue_dec(vcpu); | |
| kvm_vcpu_kick(vcpu); | |
| } | |
| struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) | |
| { | |
| return kvm->arch.kvm_ops->vcpu_create(kvm, id); | |
| } | |
| void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) | |
| { | |
| vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu); | |
| } | |
| int kvmppc_core_check_requests(struct kvm_vcpu *vcpu) | |
| { | |
| return vcpu->kvm->arch.kvm_ops->check_requests(vcpu); | |
| } | |
| int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) | |
| { | |
| return kvm->arch.kvm_ops->get_dirty_log(kvm, log); | |
| } | |
| void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, | |
| struct kvm_memory_slot *dont) | |
| { | |
| kvm->arch.kvm_ops->free_memslot(free, dont); | |
| } | |
| int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, | |
| unsigned long npages) | |
| { | |
| return kvm->arch.kvm_ops->create_memslot(slot, npages); | |
| } | |
| void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot) | |
| { | |
| kvm->arch.kvm_ops->flush_memslot(kvm, memslot); | |
| } | |
| int kvmppc_core_prepare_memory_region(struct kvm *kvm, | |
| struct kvm_memory_slot *memslot, | |
| const struct kvm_userspace_memory_region *mem) | |
| { | |
| return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem); | |
| } | |
| void kvmppc_core_commit_memory_region(struct kvm *kvm, | |
| const struct kvm_userspace_memory_region *mem, | |
| const struct kvm_memory_slot *old, | |
| const struct kvm_memory_slot *new) | |
| { | |
| kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new); | |
| } | |
| int kvm_unmap_hva(struct kvm *kvm, unsigned long hva) | |
| { | |
| return kvm->arch.kvm_ops->unmap_hva(kvm, hva); | |
| } | |
| EXPORT_SYMBOL_GPL(kvm_unmap_hva); | |
| int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end) | |
| { | |
| return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end); | |
| } | |
| int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end) | |
| { | |
| return kvm->arch.kvm_ops->age_hva(kvm, start, end); | |
| } | |
| int kvm_test_age_hva(struct kvm *kvm, unsigned long hva) | |
| { | |
| return kvm->arch.kvm_ops->test_age_hva(kvm, hva); | |
| } | |
| void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) | |
| { | |
| kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte); | |
| } | |
| void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu) | |
| { | |
| vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu); | |
| } | |
| int kvmppc_core_init_vm(struct kvm *kvm) | |
| { | |
| #ifdef CONFIG_PPC64 | |
| INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables); | |
| INIT_LIST_HEAD(&kvm->arch.rtas_tokens); | |
| #endif | |
| return kvm->arch.kvm_ops->init_vm(kvm); | |
| } | |
| void kvmppc_core_destroy_vm(struct kvm *kvm) | |
| { | |
| kvm->arch.kvm_ops->destroy_vm(kvm); | |
| #ifdef CONFIG_PPC64 | |
| kvmppc_rtas_tokens_free(kvm); | |
| WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); | |
| #endif | |
| } | |
| int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu) | |
| { | |
| unsigned long size = kvmppc_get_gpr(vcpu, 4); | |
| unsigned long addr = kvmppc_get_gpr(vcpu, 5); | |
| u64 buf; | |
| int srcu_idx; | |
| int ret; | |
| if (!is_power_of_2(size) || (size > sizeof(buf))) | |
| return H_TOO_HARD; | |
| srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); | |
| ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf); | |
| srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); | |
| if (ret != 0) | |
| return H_TOO_HARD; | |
| switch (size) { | |
| case 1: | |
| kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf); | |
| break; | |
| case 2: | |
| kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf)); | |
| break; | |
| case 4: | |
| kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf)); | |
| break; | |
| case 8: | |
| kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf)); | |
| break; | |
| default: | |
| BUG(); | |
| } | |
| return H_SUCCESS; | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load); | |
| int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu) | |
| { | |
| unsigned long size = kvmppc_get_gpr(vcpu, 4); | |
| unsigned long addr = kvmppc_get_gpr(vcpu, 5); | |
| unsigned long val = kvmppc_get_gpr(vcpu, 6); | |
| u64 buf; | |
| int srcu_idx; | |
| int ret; | |
| switch (size) { | |
| case 1: | |
| *(u8 *)&buf = val; | |
| break; | |
| case 2: | |
| *(__be16 *)&buf = cpu_to_be16(val); | |
| break; | |
| case 4: | |
| *(__be32 *)&buf = cpu_to_be32(val); | |
| break; | |
| case 8: | |
| *(__be64 *)&buf = cpu_to_be64(val); | |
| break; | |
| default: | |
| return H_TOO_HARD; | |
| } | |
| srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); | |
| ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf); | |
| srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); | |
| if (ret != 0) | |
| return H_TOO_HARD; | |
| return H_SUCCESS; | |
| } | |
| EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store); | |
| int kvmppc_core_check_processor_compat(void) | |
| { | |
| /* | |
| * We always return 0 for book3s. We check | |
| * for compatibility while loading the HV | |
| * or PR module | |
| */ | |
| return 0; | |
| } | |
| int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall) | |
| { | |
| return kvm->arch.kvm_ops->hcall_implemented(hcall); | |
| } | |
| static int kvmppc_book3s_init(void) | |
| { | |
| int r; | |
| r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); | |
| if (r) | |
| return r; | |
| #ifdef CONFIG_KVM_BOOK3S_32_HANDLER | |
| r = kvmppc_book3s_init_pr(); | |
| #endif | |
| return r; | |
| } | |
| static void kvmppc_book3s_exit(void) | |
| { | |
| #ifdef CONFIG_KVM_BOOK3S_32_HANDLER | |
| kvmppc_book3s_exit_pr(); | |
| #endif | |
| kvm_exit(); | |
| } | |
| module_init(kvmppc_book3s_init); | |
| module_exit(kvmppc_book3s_exit); | |
| /* On 32bit this is our one and only kernel module */ | |
| #ifdef CONFIG_KVM_BOOK3S_32_HANDLER | |
| MODULE_ALIAS_MISCDEV(KVM_MINOR); | |
| MODULE_ALIAS("devname:kvm"); | |
| #endif |