// 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 VM_STAT(x, ...) offsetof(struct kvm, stat.x), KVM_STAT_VM, ## __VA_ARGS__ #define VCPU_STAT(x, ...) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__ /* #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_poll_success_ns", VCPU_STAT(halt_poll_success_ns) }, { "halt_poll_fail_ns", VCPU_STAT(halt_poll_fail_ns) }, { "halt_wait_ns", VCPU_STAT(halt_wait_ns) }, { "halt_successful_poll", VCPU_STAT(halt_successful_poll), }, { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), }, { "halt_successful_wait", VCPU_STAT(halt_successful_wait) }, { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) }, { "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) }, { "pthru_all", VCPU_STAT(pthru_all) }, { "pthru_host", VCPU_STAT(pthru_host) }, { "pthru_bad_aff", VCPU_STAT(pthru_bad_aff) }, { "largepages_2M", VM_STAT(num_2M_pages, .mode = 0444) }, { "largepages_1G", VM_STAT(num_1G_pages, .mode = 0444) }, { NULL } }; void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu) { if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) { ulong pc = kvmppc_get_pc(vcpu); ulong lr = kvmppc_get_lr(vcpu); if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS) kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK); if ((lr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS) kvmppc_set_lr(vcpu, lr & ~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) & ~0x783f0000ul) | 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 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 flags) { /* might as well deliver this straight away */ kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_MACHINE_CHECK, flags); } EXPORT_SYMBOL_GPL(kvmppc_core_queue_machine_check); 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_fpunavail(struct kvm_vcpu *vcpu) { /* might as well deliver this straight away */ kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, 0); } void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu) { /* might as well deliver this straight away */ kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_ALTIVEC, 0); } void kvmppc_core_queue_vsx_unavail(struct kvm_vcpu *vcpu) { /* might as well deliver this straight away */ kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_VSX, 0); } 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 dar, ulong flags) { kvmppc_set_dar(vcpu, dar); kvmppc_set_dsisr(vcpu, flags); kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, 0); } EXPORT_SYMBOL_GPL(kvmppc_core_queue_data_storage); void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags) { kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, 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 = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit; vec = BOOK3S_INTERRUPT_DECREMENTER; break; case BOOK3S_IRQPRIO_EXTERNAL: 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: /* * 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; } int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_fetch_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) { 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 = 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 && !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, 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_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 && !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: 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_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_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); } 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, enum kvm_mr_change change) { kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new, change); } 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); } int kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte) { kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte); return 0; } 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_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 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; #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_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); } #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(NULL, 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()) { kvmppc_xive_init_module(); kvm_register_device_ops(&kvm_xive_ops, KVM_DEV_TYPE_XICS); if (kvmppc_xive_native_supported()) { kvmppc_xive_native_init_module(); 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_XICS if (xics_on_xive()) { kvmppc_xive_exit_module(); kvmppc_xive_native_exit_module(); } #endif #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