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-rw-r--r--arch/arm/kvm/guest.c387
1 files changed, 0 insertions, 387 deletions
diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c
deleted file mode 100644
index 9f7ae0d8690f..000000000000
--- a/arch/arm/kvm/guest.c
+++ /dev/null
@@ -1,387 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2012 - Virtual Open Systems and Columbia University
- * Author: Christoffer Dall <c.dall@virtualopensystems.com>
- */
-
-#include <linux/errno.h>
-#include <linux/err.h>
-#include <linux/kvm_host.h>
-#include <linux/module.h>
-#include <linux/vmalloc.h>
-#include <linux/fs.h>
-#include <kvm/arm_psci.h>
-#include <asm/cputype.h>
-#include <linux/uaccess.h>
-#include <asm/kvm.h>
-#include <asm/kvm_emulate.h>
-#include <asm/kvm_coproc.h>
-
-#define VM_STAT(x) { #x, offsetof(struct kvm, stat.x), KVM_STAT_VM }
-#define VCPU_STAT(x) { #x, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU }
-
-struct kvm_stats_debugfs_item debugfs_entries[] = {
- VCPU_STAT(halt_successful_poll),
- VCPU_STAT(halt_attempted_poll),
- VCPU_STAT(halt_poll_invalid),
- VCPU_STAT(halt_wakeup),
- VCPU_STAT(hvc_exit_stat),
- VCPU_STAT(wfe_exit_stat),
- VCPU_STAT(wfi_exit_stat),
- VCPU_STAT(mmio_exit_user),
- VCPU_STAT(mmio_exit_kernel),
- VCPU_STAT(exits),
- { NULL }
-};
-
-static u64 core_reg_offset_from_id(u64 id)
-{
- return id & ~(KVM_REG_ARCH_MASK | KVM_REG_SIZE_MASK | KVM_REG_ARM_CORE);
-}
-
-static int get_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
-{
- u32 __user *uaddr = (u32 __user *)(long)reg->addr;
- struct kvm_regs *regs = &vcpu->arch.ctxt.gp_regs;
- u64 off;
-
- if (KVM_REG_SIZE(reg->id) != 4)
- return -ENOENT;
-
- /* Our ID is an index into the kvm_regs struct. */
- off = core_reg_offset_from_id(reg->id);
- if (off >= sizeof(*regs) / KVM_REG_SIZE(reg->id))
- return -ENOENT;
-
- return put_user(((u32 *)regs)[off], uaddr);
-}
-
-static int set_core_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
-{
- u32 __user *uaddr = (u32 __user *)(long)reg->addr;
- struct kvm_regs *regs = &vcpu->arch.ctxt.gp_regs;
- u64 off, val;
-
- if (KVM_REG_SIZE(reg->id) != 4)
- return -ENOENT;
-
- /* Our ID is an index into the kvm_regs struct. */
- off = core_reg_offset_from_id(reg->id);
- if (off >= sizeof(*regs) / KVM_REG_SIZE(reg->id))
- return -ENOENT;
-
- if (get_user(val, uaddr) != 0)
- return -EFAULT;
-
- if (off == KVM_REG_ARM_CORE_REG(usr_regs.ARM_cpsr)) {
- unsigned long mode = val & MODE_MASK;
- switch (mode) {
- case USR_MODE:
- case FIQ_MODE:
- case IRQ_MODE:
- case SVC_MODE:
- case ABT_MODE:
- case UND_MODE:
- break;
- default:
- return -EINVAL;
- }
- }
-
- ((u32 *)regs)[off] = val;
- return 0;
-}
-
-int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
-{
- return -EINVAL;
-}
-
-int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
-{
- return -EINVAL;
-}
-
-#define NUM_TIMER_REGS 3
-
-static bool is_timer_reg(u64 index)
-{
- switch (index) {
- case KVM_REG_ARM_TIMER_CTL:
- case KVM_REG_ARM_TIMER_CNT:
- case KVM_REG_ARM_TIMER_CVAL:
- return true;
- }
- return false;
-}
-
-static int copy_timer_indices(struct kvm_vcpu *vcpu, u64 __user *uindices)
-{
- if (put_user(KVM_REG_ARM_TIMER_CTL, uindices))
- return -EFAULT;
- uindices++;
- if (put_user(KVM_REG_ARM_TIMER_CNT, uindices))
- return -EFAULT;
- uindices++;
- if (put_user(KVM_REG_ARM_TIMER_CVAL, uindices))
- return -EFAULT;
-
- return 0;
-}
-
-static int set_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
-{
- void __user *uaddr = (void __user *)(long)reg->addr;
- u64 val;
- int ret;
-
- ret = copy_from_user(&val, uaddr, KVM_REG_SIZE(reg->id));
- if (ret != 0)
- return -EFAULT;
-
- return kvm_arm_timer_set_reg(vcpu, reg->id, val);
-}
-
-static int get_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
-{
- void __user *uaddr = (void __user *)(long)reg->addr;
- u64 val;
-
- val = kvm_arm_timer_get_reg(vcpu, reg->id);
- return copy_to_user(uaddr, &val, KVM_REG_SIZE(reg->id)) ? -EFAULT : 0;
-}
-
-static unsigned long num_core_regs(void)
-{
- return sizeof(struct kvm_regs) / sizeof(u32);
-}
-
-/**
- * kvm_arm_num_regs - how many registers do we present via KVM_GET_ONE_REG
- *
- * This is for all registers.
- */
-unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu)
-{
- return num_core_regs() + kvm_arm_num_coproc_regs(vcpu)
- + kvm_arm_get_fw_num_regs(vcpu)
- + NUM_TIMER_REGS;
-}
-
-/**
- * kvm_arm_copy_reg_indices - get indices of all registers.
- *
- * We do core registers right here, then we append coproc regs.
- */
-int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices)
-{
- unsigned int i;
- const u64 core_reg = KVM_REG_ARM | KVM_REG_SIZE_U32 | KVM_REG_ARM_CORE;
- int ret;
-
- for (i = 0; i < sizeof(struct kvm_regs)/sizeof(u32); i++) {
- if (put_user(core_reg | i, uindices))
- return -EFAULT;
- uindices++;
- }
-
- ret = kvm_arm_copy_fw_reg_indices(vcpu, uindices);
- if (ret)
- return ret;
- uindices += kvm_arm_get_fw_num_regs(vcpu);
-
- ret = copy_timer_indices(vcpu, uindices);
- if (ret)
- return ret;
- uindices += NUM_TIMER_REGS;
-
- return kvm_arm_copy_coproc_indices(vcpu, uindices);
-}
-
-int kvm_arm_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
-{
- /* We currently use nothing arch-specific in upper 32 bits */
- if ((reg->id & ~KVM_REG_SIZE_MASK) >> 32 != KVM_REG_ARM >> 32)
- return -EINVAL;
-
- /* Register group 16 means we want a core register. */
- if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_CORE)
- return get_core_reg(vcpu, reg);
-
- if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_FW)
- return kvm_arm_get_fw_reg(vcpu, reg);
-
- if (is_timer_reg(reg->id))
- return get_timer_reg(vcpu, reg);
-
- return kvm_arm_coproc_get_reg(vcpu, reg);
-}
-
-int kvm_arm_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg)
-{
- /* We currently use nothing arch-specific in upper 32 bits */
- if ((reg->id & ~KVM_REG_SIZE_MASK) >> 32 != KVM_REG_ARM >> 32)
- return -EINVAL;
-
- /* Register group 16 means we set a core register. */
- if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_CORE)
- return set_core_reg(vcpu, reg);
-
- if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_FW)
- return kvm_arm_set_fw_reg(vcpu, reg);
-
- if (is_timer_reg(reg->id))
- return set_timer_reg(vcpu, reg);
-
- return kvm_arm_coproc_set_reg(vcpu, reg);
-}
-
-int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
-{
- return -EINVAL;
-}
-
-int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
-{
- return -EINVAL;
-}
-
-
-int __kvm_arm_vcpu_get_events(struct kvm_vcpu *vcpu,
- struct kvm_vcpu_events *events)
-{
- events->exception.serror_pending = !!(*vcpu_hcr(vcpu) & HCR_VA);
-
- /*
- * We never return a pending ext_dabt here because we deliver it to
- * the virtual CPU directly when setting the event and it's no longer
- * 'pending' at this point.
- */
-
- return 0;
-}
-
-int __kvm_arm_vcpu_set_events(struct kvm_vcpu *vcpu,
- struct kvm_vcpu_events *events)
-{
- bool serror_pending = events->exception.serror_pending;
- bool has_esr = events->exception.serror_has_esr;
- bool ext_dabt_pending = events->exception.ext_dabt_pending;
-
- if (serror_pending && has_esr)
- return -EINVAL;
- else if (serror_pending)
- kvm_inject_vabt(vcpu);
-
- if (ext_dabt_pending)
- kvm_inject_dabt(vcpu, kvm_vcpu_get_hfar(vcpu));
-
- return 0;
-}
-
-int __attribute_const__ kvm_target_cpu(void)
-{
- switch (read_cpuid_part()) {
- case ARM_CPU_PART_CORTEX_A7:
- return KVM_ARM_TARGET_CORTEX_A7;
- case ARM_CPU_PART_CORTEX_A15:
- return KVM_ARM_TARGET_CORTEX_A15;
- default:
- return -EINVAL;
- }
-}
-
-int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init)
-{
- int target = kvm_target_cpu();
-
- if (target < 0)
- return -ENODEV;
-
- memset(init, 0, sizeof(*init));
-
- /*
- * For now, we don't return any features.
- * In future, we might use features to return target
- * specific features available for the preferred
- * target type.
- */
- init->target = (__u32)target;
-
- return 0;
-}
-
-int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
-{
- return -EINVAL;
-}
-
-int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
-{
- return -EINVAL;
-}
-
-int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
- struct kvm_translation *tr)
-{
- return -EINVAL;
-}
-
-int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
- struct kvm_guest_debug *dbg)
-{
- return -EINVAL;
-}
-
-int kvm_arm_vcpu_arch_set_attr(struct kvm_vcpu *vcpu,
- struct kvm_device_attr *attr)
-{
- int ret;
-
- switch (attr->group) {
- case KVM_ARM_VCPU_TIMER_CTRL:
- ret = kvm_arm_timer_set_attr(vcpu, attr);
- break;
- default:
- ret = -ENXIO;
- break;
- }
-
- return ret;
-}
-
-int kvm_arm_vcpu_arch_get_attr(struct kvm_vcpu *vcpu,
- struct kvm_device_attr *attr)
-{
- int ret;
-
- switch (attr->group) {
- case KVM_ARM_VCPU_TIMER_CTRL:
- ret = kvm_arm_timer_get_attr(vcpu, attr);
- break;
- default:
- ret = -ENXIO;
- break;
- }
-
- return ret;
-}
-
-int kvm_arm_vcpu_arch_has_attr(struct kvm_vcpu *vcpu,
- struct kvm_device_attr *attr)
-{
- int ret;
-
- switch (attr->group) {
- case KVM_ARM_VCPU_TIMER_CTRL:
- ret = kvm_arm_timer_has_attr(vcpu, attr);
- break;
- default:
- ret = -ENXIO;
- break;
- }
-
- return ret;
-}