| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * 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>. |
| */ |
| |
| #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 <linux/gfp.h> |
| #include <linux/sched.h> |
| #include <linux/vmalloc.h> |
| #include <linux/highmem.h> |
| |
| #include <asm/reg.h> |
| #include <asm/cputable.h> |
| #include <asm/cacheflush.h> |
| #include <linux/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 <asm/xive.h> |
| |
| #include "book3s.h" |
| #include "trace.h" |
| |
| /* #define EXIT_DEBUG */ |
| |
| const struct _kvm_stats_desc kvm_vm_stats_desc[] = { |
| KVM_GENERIC_VM_STATS(), |
| STATS_DESC_ICOUNTER(VM, num_2M_pages), |
| STATS_DESC_ICOUNTER(VM, num_1G_pages) |
| }; |
| |
| const struct kvm_stats_header kvm_vm_stats_header = { |
| .name_size = KVM_STATS_NAME_SIZE, |
| .num_desc = ARRAY_SIZE(kvm_vm_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_vm_stats_desc), |
| }; |
| |
| const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { |
| KVM_GENERIC_VCPU_STATS(), |
| STATS_DESC_COUNTER(VCPU, sum_exits), |
| STATS_DESC_COUNTER(VCPU, mmio_exits), |
| STATS_DESC_COUNTER(VCPU, signal_exits), |
| STATS_DESC_COUNTER(VCPU, light_exits), |
| STATS_DESC_COUNTER(VCPU, itlb_real_miss_exits), |
| STATS_DESC_COUNTER(VCPU, itlb_virt_miss_exits), |
| STATS_DESC_COUNTER(VCPU, dtlb_real_miss_exits), |
| STATS_DESC_COUNTER(VCPU, dtlb_virt_miss_exits), |
| STATS_DESC_COUNTER(VCPU, syscall_exits), |
| STATS_DESC_COUNTER(VCPU, isi_exits), |
| STATS_DESC_COUNTER(VCPU, dsi_exits), |
| STATS_DESC_COUNTER(VCPU, emulated_inst_exits), |
| STATS_DESC_COUNTER(VCPU, dec_exits), |
| STATS_DESC_COUNTER(VCPU, ext_intr_exits), |
| STATS_DESC_COUNTER(VCPU, halt_successful_wait), |
| STATS_DESC_COUNTER(VCPU, dbell_exits), |
| STATS_DESC_COUNTER(VCPU, gdbell_exits), |
| STATS_DESC_COUNTER(VCPU, ld), |
| STATS_DESC_COUNTER(VCPU, st), |
| STATS_DESC_COUNTER(VCPU, pf_storage), |
| STATS_DESC_COUNTER(VCPU, pf_instruc), |
| STATS_DESC_COUNTER(VCPU, sp_storage), |
| STATS_DESC_COUNTER(VCPU, sp_instruc), |
| STATS_DESC_COUNTER(VCPU, queue_intr), |
| STATS_DESC_COUNTER(VCPU, ld_slow), |
| STATS_DESC_COUNTER(VCPU, st_slow), |
| STATS_DESC_COUNTER(VCPU, pthru_all), |
| STATS_DESC_COUNTER(VCPU, pthru_host), |
| STATS_DESC_COUNTER(VCPU, pthru_bad_aff) |
| }; |
| |
| 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), |
| }; |
| |
| 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) |
| { |
| vcpu->kvm->arch.kvm_ops->inject_interrupt(vcpu, vec, flags); |
| } |
| |
| 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 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_machine_check(struct kvm_vcpu *vcpu, ulong srr1_flags) |
| { |
| /* might as well deliver this straight away */ |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_MACHINE_CHECK, srr1_flags); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_queue_machine_check); |
| |
| void kvmppc_core_queue_syscall(struct kvm_vcpu *vcpu) |
| { |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_SYSCALL, 0); |
| } |
| EXPORT_SYMBOL(kvmppc_core_queue_syscall); |
| |
| void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong srr1_flags) |
| { |
| /* might as well deliver this straight away */ |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, srr1_flags); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_queue_program); |
| |
| void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu, ulong srr1_flags) |
| { |
| /* might as well deliver this straight away */ |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, srr1_flags); |
| } |
| |
| void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu, ulong srr1_flags) |
| { |
| /* might as well deliver this straight away */ |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, srr1_flags); |
| } |
| |
| void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu, ulong srr1_flags) |
| { |
| /* might as well deliver this straight away */ |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, srr1_flags); |
| } |
| |
| 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) |
| { |
| /* |
| * This case (KVM_INTERRUPT_SET) should never actually arise for |
| * a pseries guest (because pseries guests expect their interrupt |
| * controllers to continue asserting an external interrupt request |
| * until it is acknowledged at the interrupt controller), but is |
| * included to avoid ABI breakage and potentially for other |
| * sorts of guest. |
| * |
| * There is a subtlety here: HV KVM does not test the |
| * external_oneshot flag in the code that synthesizes |
| * external interrupts for the guest just before entering |
| * the guest. That is OK even if userspace did do a |
| * KVM_INTERRUPT_SET on a pseries guest vcpu, because the |
| * caller (kvm_vcpu_ioctl_interrupt) does a kvm_vcpu_kick() |
| * which ends up doing a smp_send_reschedule(), which will |
| * pull the guest all the way out to the host, meaning that |
| * we will call kvmppc_core_prepare_to_enter() before entering |
| * the guest again, and that will handle the external_oneshot |
| * flag correctly. |
| */ |
| if (irq->irq == KVM_INTERRUPT_SET) |
| vcpu->arch.external_oneshot = 1; |
| |
| kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); |
| } |
| |
| void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu) |
| { |
| kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL); |
| } |
| |
| void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong srr1_flags, |
| ulong dar, ulong dsisr) |
| { |
| kvmppc_set_dar(vcpu, dar); |
| kvmppc_set_dsisr(vcpu, dsisr); |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, srr1_flags); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage); |
| |
| void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong srr1_flags) |
| { |
| kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, srr1_flags); |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_core_queue_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 = !kvmhv_is_nestedv2() && (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; |
| vec = BOOK3S_INTERRUPT_DECREMENTER; |
| break; |
| case BOOK3S_IRQPRIO_EXTERNAL: |
| deliver = !kvmhv_is_nestedv2() && (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: |
| /* |
| * External interrupts get cleared by userspace |
| * except when set by the KVM_INTERRUPT ioctl with |
| * KVM_INTERRUPT_SET (not KVM_INTERRUPT_SET_LEVEL). |
| */ |
| if (vcpu->arch.external_oneshot) { |
| vcpu->arch.external_oneshot = 0; |
| return true; |
| } |
| 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); |
| |
| kvm_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; |
| kvm_pfn_t pfn; |
| |
| pfn = (kvm_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; |
| } |
| |
| /* |
| * Returns prefixed instructions with the prefix in the high 32 bits |
| * of *inst and suffix in the low 32 bits. This is the same convention |
| * as used in HEIR, vcpu->arch.last_inst and vcpu->arch.emul_inst. |
| * Like vcpu->arch.last_inst but unlike vcpu->arch.emul_inst, each |
| * half of the value needs byte-swapping if the guest endianness is |
| * different from the host endianness. |
| */ |
| int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, |
| enum instruction_fetch_type type, unsigned long *inst) |
| { |
| ulong pc = kvmppc_get_pc(vcpu); |
| int r; |
| u32 iw; |
| |
| if (type == INST_SC) |
| pc -= 4; |
| |
| r = kvmppc_ld(vcpu, &pc, sizeof(u32), &iw, false); |
| if (r != EMULATE_DONE) |
| return EMULATE_AGAIN; |
| /* |
| * If [H]SRR1 indicates that the instruction that caused the |
| * current interrupt is a prefixed instruction, get the suffix. |
| */ |
| if (kvmppc_get_msr(vcpu) & SRR1_PREFIXED) { |
| u32 suffix; |
| pc += 4; |
| r = kvmppc_ld(vcpu, &pc, sizeof(u32), &suffix, false); |
| if (r != EMULATE_DONE) |
| return EMULATE_AGAIN; |
| *inst = ((u64)iw << 32) | suffix; |
| } else { |
| *inst = iw; |
| } |
| return r; |
| } |
| EXPORT_SYMBOL_GPL(kvmppc_load_last_inst); |
| |
| 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) |
| { |
| int ret; |
| |
| vcpu_load(vcpu); |
| ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs); |
| vcpu_put(vcpu); |
| |
| return ret; |
| } |
| |
| int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, |
| struct kvm_sregs *sregs) |
| { |
| int ret; |
| |
| vcpu_load(vcpu); |
| ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs); |
| vcpu_put(vcpu); |
| |
| return ret; |
| } |
| |
| 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 = kvmppc_get_pid(vcpu); |
| 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 -EOPNOTSUPP; |
| } |
| |
| int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu) |
| { |
| return -EOPNOTSUPP; |
| } |
| |
| 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, kvmppc_get_fpr(vcpu, i)); |
| break; |
| case KVM_REG_PPC_FPSCR: |
| *val = get_reg_val(id, kvmppc_get_fpscr(vcpu)); |
| 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] = kvmppc_get_vsx_fpr(vcpu, i, 0); |
| val->vsxval[1] = kvmppc_get_vsx_fpr(vcpu, 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 && !vcpu->arch.xive_vcpu) { |
| r = -ENXIO; |
| break; |
| } |
| if (xics_on_xive()) |
| *val = get_reg_val(id, kvmppc_xive_get_icp(vcpu)); |
| else |
| *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu)); |
| break; |
| #endif /* CONFIG_KVM_XICS */ |
| #ifdef CONFIG_KVM_XIVE |
| case KVM_REG_PPC_VP_STATE: |
| if (!vcpu->arch.xive_vcpu) { |
| r = -ENXIO; |
| break; |
| } |
| if (xive_enabled()) |
| r = kvmppc_xive_native_get_vp(vcpu, val); |
| else |
| r = -ENXIO; |
| break; |
| #endif /* CONFIG_KVM_XIVE */ |
| case KVM_REG_PPC_FSCR: |
| *val = get_reg_val(id, vcpu->arch.fscr); |
| break; |
| case KVM_REG_PPC_TAR: |
| *val = get_reg_val(id, kvmppc_get_tar(vcpu)); |
| break; |
| case KVM_REG_PPC_EBBHR: |
| *val = get_reg_val(id, kvmppc_get_ebbhr(vcpu)); |
| break; |
| case KVM_REG_PPC_EBBRR: |
| *val = get_reg_val(id, kvmppc_get_ebbrr(vcpu)); |
| break; |
| case KVM_REG_PPC_BESCR: |
| *val = get_reg_val(id, kvmppc_get_bescr(vcpu)); |
| break; |
| case KVM_REG_PPC_IC: |
| *val = get_reg_val(id, kvmppc_get_ic(vcpu)); |
| 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; |
| kvmppc_set_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; |
| kvmppc_set_vsx_fpr(vcpu, i, 0, val->vsxval[0]); |
| kvmppc_set_vsx_fpr(vcpu, 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 && !vcpu->arch.xive_vcpu) { |
| r = -ENXIO; |
| break; |
| } |
| if (xics_on_xive()) |
| r = kvmppc_xive_set_icp(vcpu, set_reg_val(id, *val)); |
| else |
| r = kvmppc_xics_set_icp(vcpu, set_reg_val(id, *val)); |
| break; |
| #endif /* CONFIG_KVM_XICS */ |
| #ifdef CONFIG_KVM_XIVE |
| case KVM_REG_PPC_VP_STATE: |
| if (!vcpu->arch.xive_vcpu) { |
| r = -ENXIO; |
| break; |
| } |
| if (xive_enabled()) |
| r = kvmppc_xive_native_set_vp(vcpu, val); |
| else |
| r = -ENXIO; |
| break; |
| #endif /* CONFIG_KVM_XIVE */ |
| case KVM_REG_PPC_FSCR: |
| kvmppc_set_fpscr(vcpu, set_reg_val(id, *val)); |
| break; |
| case KVM_REG_PPC_TAR: |
| kvmppc_set_tar(vcpu, set_reg_val(id, *val)); |
| break; |
| case KVM_REG_PPC_EBBHR: |
| kvmppc_set_ebbhr(vcpu, set_reg_val(id, *val)); |
| break; |
| case KVM_REG_PPC_EBBRR: |
| kvmppc_set_ebbrr(vcpu, set_reg_val(id, *val)); |
| break; |
| case KVM_REG_PPC_BESCR: |
| kvmppc_set_bescr(vcpu, set_reg_val(id, *val)); |
| break; |
| case KVM_REG_PPC_IC: |
| kvmppc_set_ic(vcpu, 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_vcpu *vcpu) |
| { |
| return vcpu->kvm->arch.kvm_ops->vcpu_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_load(vcpu); |
| vcpu->guest_debug = dbg->control; |
| vcpu_put(vcpu); |
| return 0; |
| } |
| |
| void kvmppc_decrementer_func(struct kvm_vcpu *vcpu) |
| { |
| kvmppc_core_queue_dec(vcpu); |
| kvm_vcpu_kick(vcpu); |
| } |
| |
| int kvmppc_core_vcpu_create(struct kvm_vcpu *vcpu) |
| { |
| return vcpu->kvm->arch.kvm_ops->vcpu_create(vcpu); |
| } |
| |
| 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); |
| } |
| |
| void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot) |
| { |
| |
| } |
| |
| 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 *slot) |
| { |
| kvm->arch.kvm_ops->free_memslot(slot); |
| } |
| |
| 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, |
| const struct kvm_memory_slot *old, |
| struct kvm_memory_slot *new, |
| enum kvm_mr_change change) |
| { |
| return kvm->arch.kvm_ops->prepare_memory_region(kvm, old, new, change); |
| } |
| |
| void kvmppc_core_commit_memory_region(struct kvm *kvm, |
| struct kvm_memory_slot *old, |
| const struct kvm_memory_slot *new, |
| enum kvm_mr_change change) |
| { |
| kvm->arch.kvm_ops->commit_memory_region(kvm, old, new, change); |
| } |
| |
| bool kvm_unmap_gfn_range(struct kvm *kvm, struct kvm_gfn_range *range) |
| { |
| return kvm->arch.kvm_ops->unmap_gfn_range(kvm, range); |
| } |
| |
| bool kvm_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) |
| { |
| return kvm->arch.kvm_ops->age_gfn(kvm, range); |
| } |
| |
| bool kvm_test_age_gfn(struct kvm *kvm, struct kvm_gfn_range *range) |
| { |
| return kvm->arch.kvm_ops->test_age_gfn(kvm, range); |
| } |
| |
| bool kvm_set_spte_gfn(struct kvm *kvm, struct kvm_gfn_range *range) |
| { |
| return kvm->arch.kvm_ops->set_spte_gfn(kvm, range); |
| } |
| |
| int kvmppc_core_init_vm(struct kvm *kvm) |
| { |
| |
| #ifdef CONFIG_PPC64 |
| INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables); |
| INIT_LIST_HEAD(&kvm->arch.rtas_tokens); |
| mutex_init(&kvm->arch.rtas_token_lock); |
| #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 |
| |
| #ifdef CONFIG_KVM_XICS |
| /* |
| * Free the XIVE and XICS devices which are not directly freed by the |
| * device 'release' method |
| */ |
| kfree(kvm->arch.xive_devices.native); |
| kvm->arch.xive_devices.native = NULL; |
| kfree(kvm->arch.xive_devices.xics_on_xive); |
| kvm->arch.xive_devices.xics_on_xive = NULL; |
| kfree(kvm->arch.xics_device); |
| kvm->arch.xics_device = NULL; |
| #endif /* CONFIG_KVM_XICS */ |
| } |
| |
| 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_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall) |
| { |
| return kvm->arch.kvm_ops->hcall_implemented(hcall); |
| } |
| |
| #ifdef CONFIG_KVM_XICS |
| int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level, |
| bool line_status) |
| { |
| if (xics_on_xive()) |
| return kvmppc_xive_set_irq(kvm, irq_source_id, irq, level, |
| line_status); |
| else |
| return kvmppc_xics_set_irq(kvm, irq_source_id, irq, level, |
| line_status); |
| } |
| |
| int kvm_arch_set_irq_inatomic(struct kvm_kernel_irq_routing_entry *irq_entry, |
| struct kvm *kvm, int irq_source_id, |
| int level, bool line_status) |
| { |
| return kvm_set_irq(kvm, irq_source_id, irq_entry->gsi, |
| level, line_status); |
| } |
| static int kvmppc_book3s_set_irq(struct kvm_kernel_irq_routing_entry *e, |
| struct kvm *kvm, int irq_source_id, int level, |
| bool line_status) |
| { |
| return kvm_set_irq(kvm, irq_source_id, e->gsi, level, line_status); |
| } |
| |
| int kvm_irq_map_gsi(struct kvm *kvm, |
| struct kvm_kernel_irq_routing_entry *entries, int gsi) |
| { |
| entries->gsi = gsi; |
| entries->type = KVM_IRQ_ROUTING_IRQCHIP; |
| entries->set = kvmppc_book3s_set_irq; |
| entries->irqchip.irqchip = 0; |
| entries->irqchip.pin = gsi; |
| return 1; |
| } |
| |
| int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin) |
| { |
| return pin; |
| } |
| |
| #endif /* CONFIG_KVM_XICS */ |
| |
| static int kvmppc_book3s_init(void) |
| { |
| int r; |
| |
| r = kvm_init(sizeof(struct kvm_vcpu), 0, THIS_MODULE); |
| if (r) |
| return r; |
| #ifdef CONFIG_KVM_BOOK3S_32_HANDLER |
| r = kvmppc_book3s_init_pr(); |
| #endif |
| |
| #ifdef CONFIG_KVM_XICS |
| #ifdef CONFIG_KVM_XIVE |
| if (xics_on_xive()) { |
| kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS); |
| if (kvmppc_xive_native_supported()) |
| kvm_register_device_ops(&kvm_xive_native_ops, |
| KVM_DEV_TYPE_XIVE); |
| } else |
| #endif |
| kvm_register_device_ops(&kvm_xics_ops, KVM_DEV_TYPE_XICS); |
| #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 |
