[deliverable/linux.git] / arch / arm / kvm / guest.c

/*
 * Copyright (C) 2012 - Virtual Open Systems and Columbia University
 * Author: Christoffer Dall <c.dall@virtualopensystems.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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#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 <asm/cputype.h>
#include <asm/uaccess.h>
#include <asm/kvm.h>
#include <asm/kvm_asm.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[] = {
	{ NULL }
};

int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
	vcpu->arch.hcr = HCR_GUEST_MASK;
	return 0;
}

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.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.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;
}

#ifndef CONFIG_KVM_ARM_TIMER

#define NUM_TIMER_REGS 0

static int copy_timer_indices(struct kvm_vcpu *vcpu, u64 __user *uindices)
{
	return 0;
}

static bool is_timer_reg(u64 index)
{
	return false;
}

int kvm_arm_timer_set_reg(struct kvm_vcpu *vcpu, u64 regid, u64 value)
{
	return 0;
}

u64 kvm_arm_timer_get_reg(struct kvm_vcpu *vcpu, u64 regid)
{
	return 0;
}

#else

#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;
}

#endif

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 ret;

	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));
}

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)
		+ NUM_TIMER_REGS;
}

/**
 * kvm_arm_copy_reg_indices - get indices of all registers.
 *
 * We do core registers right here, then we apppend 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 = 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 (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 (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 __attribute_const__ kvm_target_cpu(void)
{
	unsigned long implementor = read_cpuid_implementor();
	unsigned long part_number = read_cpuid_part_number();

	if (implementor != ARM_CPU_IMP_ARM)
		return -EINVAL;

	switch (part_number) {
	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_set_target(struct kvm_vcpu *vcpu,
			const struct kvm_vcpu_init *init)
{
	unsigned int i;

	/* We can only cope with guest==host and only on A15/A7 (for now). */
	if (init->target != kvm_target_cpu())
		return -EINVAL;

	vcpu->arch.target = init->target;
	bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES);

	/* -ENOENT for unknown features, -EINVAL for invalid combinations. */
	for (i = 0; i < sizeof(init->features) * 8; i++) {
		if (test_bit(i, (void *)init->features)) {
			if (i >= KVM_VCPU_MAX_FEATURES)
				return -ENOENT;
			set_bit(i, vcpu->arch.features);
		}
	}

	/* Now we know what it is, we can reset it. */
	return kvm_reset_vcpu(vcpu);
}

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;
}
Commit	Line	Data
749cf76c CD	1	/*
	2	* Copyright (C) 2012 - Virtual Open Systems and Columbia University
	3	* Author: Christoffer Dall <c.dall@virtualopensystems.com>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License, version 2, as
	7	* published by the Free Software Foundation.
	8	*
	9	* This program is distributed in the hope that it will be useful,
	10	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	12	* GNU General Public License for more details.
	13	*
	14	* You should have received a copy of the GNU General Public License
	15	* along with this program; if not, write to the Free Software
	16	* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	17	*/
	18
	19	#include <linux/errno.h>
	20	#include <linux/err.h>
	21	#include <linux/kvm_host.h>
	22	#include <linux/module.h>
	23	#include <linux/vmalloc.h>
	24	#include <linux/fs.h>
728d577d	25	#include <asm/cputype.h>
749cf76c CD	26	#include <asm/uaccess.h>
	27	#include <asm/kvm.h>
	28	#include <asm/kvm_asm.h>
	29	#include <asm/kvm_emulate.h>
1138245c	30	#include <asm/kvm_coproc.h>
749cf76c CD	31
	32	#define VM_STAT(x) { #x, offsetof(struct kvm, stat.x), KVM_STAT_VM }
	33	#define VCPU_STAT(x) { #x, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU }
	34
	35	struct kvm_stats_debugfs_item debugfs_entries[] = {
	36	{ NULL }
	37	};
	38
	39	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
	40	{
ac30a11e	41	vcpu->arch.hcr = HCR_GUEST_MASK;
749cf76c CD	42	return 0;
	43	}
	44
	45	static u64 core_reg_offset_from_id(u64 id)
	46	{
	47	return id & ~(KVM_REG_ARCH_MASK \| KVM_REG_SIZE_MASK \| KVM_REG_ARM_CORE);
	48	}
	49
	50	static int get_core_reg(struct kvm_vcpu vcpu, const struct kvm_one_reg reg)
	51	{
	52	u32 __user uaddr = (u32 __user )(long)reg->addr;
	53	struct kvm_regs *regs = &vcpu->arch.regs;
	54	u64 off;
	55
	56	if (KVM_REG_SIZE(reg->id) != 4)
	57	return -ENOENT;
	58
	59	/* Our ID is an index into the kvm_regs struct. */
	60	off = core_reg_offset_from_id(reg->id);
	61	if (off >= sizeof(*regs) / KVM_REG_SIZE(reg->id))
	62	return -ENOENT;
	63
	64	return put_user(((u32 *)regs)[off], uaddr);
	65	}
	66
	67	static int set_core_reg(struct kvm_vcpu vcpu, const struct kvm_one_reg reg)
	68	{
	69	u32 __user uaddr = (u32 __user )(long)reg->addr;
	70	struct kvm_regs *regs = &vcpu->arch.regs;
	71	u64 off, val;
	72
	73	if (KVM_REG_SIZE(reg->id) != 4)
	74	return -ENOENT;
	75
	76	/* Our ID is an index into the kvm_regs struct. */
	77	off = core_reg_offset_from_id(reg->id);
	78	if (off >= sizeof(*regs) / KVM_REG_SIZE(reg->id))
	79	return -ENOENT;
	80
	81	if (get_user(val, uaddr) != 0)
	82	return -EFAULT;
	83
	84	if (off == KVM_REG_ARM_CORE_REG(usr_regs.ARM_cpsr)) {
	85	unsigned long mode = val & MODE_MASK;
	86	switch (mode) {
	87	case USR_MODE:
	88	case FIQ_MODE:
	89	case IRQ_MODE:
	90	case SVC_MODE:
	91	case ABT_MODE:
	92	case UND_MODE:
	93	break;
	94	default:
	95	return -EINVAL;
	96	}
	97	}
	98
	99	((u32 *)regs)[off] = val;
	100	return 0;
	101	}
	102
	103	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs)
	104	{
	105	return -EINVAL;
106	}
107
108	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs)
109	{
110	return -EINVAL;
111	}
112
39735a3a AP	113	#ifndef CONFIG_KVM_ARM_TIMER
	114
	115	#define NUM_TIMER_REGS 0
	116
	117	static int copy_timer_indices(struct kvm_vcpu vcpu, u64 __user uindices)
	118	{
	119	return 0;
	120	}
	121
	122	static bool is_timer_reg(u64 index)
	123	{
	124	return false;
	125	}
	126
	127	int kvm_arm_timer_set_reg(struct kvm_vcpu *vcpu, u64 regid, u64 value)
	128	{
	129	return 0;
	130	}
	131
	132	u64 kvm_arm_timer_get_reg(struct kvm_vcpu *vcpu, u64 regid)
	133	{
	134	return 0;
	135	}
	136
	137	#else
	138
	139	#define NUM_TIMER_REGS 3
	140
	141	static bool is_timer_reg(u64 index)
	142	{
	143	switch (index) {
	144	case KVM_REG_ARM_TIMER_CTL:
	145	case KVM_REG_ARM_TIMER_CNT:
	146	case KVM_REG_ARM_TIMER_CVAL:
	147	return true;
	148	}
	149	return false;
	150	}
	151
	152	static int copy_timer_indices(struct kvm_vcpu vcpu, u64 __user uindices)
	153	{
	154	if (put_user(KVM_REG_ARM_TIMER_CTL, uindices))
	155	return -EFAULT;
	156	uindices++;
	157	if (put_user(KVM_REG_ARM_TIMER_CNT, uindices))
	158	return -EFAULT;
	159	uindices++;
	160	if (put_user(KVM_REG_ARM_TIMER_CVAL, uindices))
	161	return -EFAULT;
	162
	163	return 0;
	164	}
	165
	166	#endif
	167
	168	static int set_timer_reg(struct kvm_vcpu vcpu, const struct kvm_one_reg reg)
	169	{
	170	void __user uaddr = (void __user )(long)reg->addr;
	171	u64 val;
	172	int ret;
	173
	174	ret = copy_from_user(&val, uaddr, KVM_REG_SIZE(reg->id));
	175	if (ret != 0)
	176	return ret;
177
178	return kvm_arm_timer_set_reg(vcpu, reg->id, val);
179	}
180
181	static int get_timer_reg(struct kvm_vcpu vcpu, const struct kvm_one_reg reg)
182	{
183	void __user uaddr = (void __user )(long)reg->addr;
184	u64 val;
185
186	val = kvm_arm_timer_get_reg(vcpu, reg->id);
187	return copy_to_user(uaddr, &val, KVM_REG_SIZE(reg->id));
188	}
189
749cf76c CD	190	static unsigned long num_core_regs(void)
	191	{
	192	return sizeof(struct kvm_regs) / sizeof(u32);
	193	}
	194
	195	/**
	196	* kvm_arm_num_regs - how many registers do we present via KVM_GET_ONE_REG
	197	*
	198	* This is for all registers.
	199	*/
	200	unsigned long kvm_arm_num_regs(struct kvm_vcpu *vcpu)
	201	{
39735a3a AP	202	return num_core_regs() + kvm_arm_num_coproc_regs(vcpu)
39735a3a AP	203	+ NUM_TIMER_REGS;
749cf76c CD	204	}
	205
	206	/**
	207	* kvm_arm_copy_reg_indices - get indices of all registers.
	208	*
	209	* We do core registers right here, then we apppend coproc regs.
	210	*/
	211	int kvm_arm_copy_reg_indices(struct kvm_vcpu vcpu, u64 __user uindices)
	212	{
	213	unsigned int i;
	214	const u64 core_reg = KVM_REG_ARM \| KVM_REG_SIZE_U32 \| KVM_REG_ARM_CORE;
39735a3a	215	int ret;
749cf76c CD	216
	217	for (i = 0; i < sizeof(struct kvm_regs)/sizeof(u32); i++) {
	218	if (put_user(core_reg \| i, uindices))
	219	return -EFAULT;
	220	uindices++;
	221	}
	222
39735a3a AP	223	ret = copy_timer_indices(vcpu, uindices);
	224	if (ret)
	225	return ret;
	226	uindices += NUM_TIMER_REGS;
	227
1138245c	228	return kvm_arm_copy_coproc_indices(vcpu, uindices);
749cf76c CD	229	}
	230
	231	int kvm_arm_get_reg(struct kvm_vcpu vcpu, const struct kvm_one_reg reg)
	232	{
	233	/* We currently use nothing arch-specific in upper 32 bits */
	234	if ((reg->id & ~KVM_REG_SIZE_MASK) >> 32 != KVM_REG_ARM >> 32)
	235	return -EINVAL;
	236
	237	/* Register group 16 means we want a core register. */
	238	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_CORE)
	239	return get_core_reg(vcpu, reg);
	240
39735a3a AP	241	if (is_timer_reg(reg->id))
	242	return get_timer_reg(vcpu, reg);
	243
1138245c	244	return kvm_arm_coproc_get_reg(vcpu, reg);
749cf76c CD	245	}
	246
	247	int kvm_arm_set_reg(struct kvm_vcpu vcpu, const struct kvm_one_reg reg)
	248	{
	249	/* We currently use nothing arch-specific in upper 32 bits */
	250	if ((reg->id & ~KVM_REG_SIZE_MASK) >> 32 != KVM_REG_ARM >> 32)
	251	return -EINVAL;
	252
	253	/* Register group 16 means we set a core register. */
	254	if ((reg->id & KVM_REG_ARM_COPROC_MASK) == KVM_REG_ARM_CORE)
	255	return set_core_reg(vcpu, reg);
39735a3a AP	256
	257	if (is_timer_reg(reg->id))
	258	return set_timer_reg(vcpu, reg);
749cf76c	259
1138245c	260	return kvm_arm_coproc_set_reg(vcpu, reg);
749cf76c CD	261	}
	262
	263	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	264	struct kvm_sregs *sregs)
	265	{
	266	return -EINVAL;
	267	}
	268
	269	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	270	struct kvm_sregs *sregs)
	271	{
	272	return -EINVAL;
	273	}
	274
728d577d MZ	275	int __attribute_const__ kvm_target_cpu(void)
	276	{
	277	unsigned long implementor = read_cpuid_implementor();
	278	unsigned long part_number = read_cpuid_part_number();
	279
	280	if (implementor != ARM_CPU_IMP_ARM)
	281	return -EINVAL;
	282
	283	switch (part_number) {
e8c2d99f JA	284	case ARM_CPU_PART_CORTEX_A7:
e8c2d99f JA	285	return KVM_ARM_TARGET_CORTEX_A7;
728d577d MZ	286	case ARM_CPU_PART_CORTEX_A15:
	287	return KVM_ARM_TARGET_CORTEX_A15;
	288	default:
	289	return -EINVAL;
	290	}
	291	}
	292
749cf76c CD	293	int kvm_vcpu_set_target(struct kvm_vcpu *vcpu,
	294	const struct kvm_vcpu_init *init)
	295	{
	296	unsigned int i;
	297
e8c2d99f	298	/* We can only cope with guest==host and only on A15/A7 (for now). */
749cf76c CD	299	if (init->target != kvm_target_cpu())
	300	return -EINVAL;
	301
	302	vcpu->arch.target = init->target;
	303	bitmap_zero(vcpu->arch.features, KVM_VCPU_MAX_FEATURES);
	304
	305	/* -ENOENT for unknown features, -EINVAL for invalid combinations. */
	306	for (i = 0; i < sizeof(init->features) * 8; i++) {
	307	if (test_bit(i, (void *)init->features)) {
	308	if (i >= KVM_VCPU_MAX_FEATURES)
	309	return -ENOENT;
	310	set_bit(i, vcpu->arch.features);
	311	}
	312	}
	313
	314	/* Now we know what it is, we can reset it. */
	315	return kvm_reset_vcpu(vcpu);
	316	}
	317
4a6fee80 AP	318	int kvm_vcpu_preferred_target(struct kvm_vcpu_init *init)
	319	{
	320	int target = kvm_target_cpu();
	321
	322	if (target < 0)
	323	return -ENODEV;
	324
	325	memset(init, 0, sizeof(*init));
	326
	327	/*
	328	* For now, we don't return any features.
	329	* In future, we might use features to return target
	330	* specific features available for the preferred
	331	* target type.
	332	*/
	333	init->target = (__u32)target;
	334
	335	return 0;
	336	}
	337
749cf76c CD	338	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu)
	339	{
	340	return -EINVAL;
	341	}
	342
	343	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu)
	344	{
	345	return -EINVAL;
	346	}
	347
	348	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	349	struct kvm_translation *tr)
	350	{
	351	return -EINVAL;
	352	}