[mirror_ubuntu-hirsute-kernel.git] / arch / powerpc / kvm / booke.c

/*
 * 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.
 *
 * Copyright IBM Corp. 2007
 *
 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
 *          Christian Ehrhardt <ehrhardt@linux.vnet.ibm.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 <asm/cputable.h>
#include <asm/uaccess.h>
#include <asm/kvm_ppc.h>
#include "timing.h"
#include <asm/cacheflush.h>
#include <asm/kvm_44x.h>

#include "booke.h"
#include "44x_tlb.h"

unsigned long kvmppc_booke_handlers;

#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU

struct kvm_stats_debugfs_item debugfs_entries[] = {
	{ "mmio",       VCPU_STAT(mmio_exits) },
	{ "dcr",        VCPU_STAT(dcr_exits) },
	{ "sig",        VCPU_STAT(signal_exits) },
	{ "itlb_r",     VCPU_STAT(itlb_real_miss_exits) },
	{ "itlb_v",     VCPU_STAT(itlb_virt_miss_exits) },
	{ "dtlb_r",     VCPU_STAT(dtlb_real_miss_exits) },
	{ "dtlb_v",     VCPU_STAT(dtlb_virt_miss_exits) },
	{ "sysc",       VCPU_STAT(syscall_exits) },
	{ "isi",        VCPU_STAT(isi_exits) },
	{ "dsi",        VCPU_STAT(dsi_exits) },
	{ "inst_emu",   VCPU_STAT(emulated_inst_exits) },
	{ "dec",        VCPU_STAT(dec_exits) },
	{ "ext_intr",   VCPU_STAT(ext_intr_exits) },
	{ "halt_wakeup", VCPU_STAT(halt_wakeup) },
	{ NULL }
};

/* TODO: use vcpu_printf() */
void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
{
	int i;

	printk("pc:   %08lx msr:  %08lx\n", vcpu->arch.pc, vcpu->arch.msr);
	printk("lr:   %08lx ctr:  %08lx\n", vcpu->arch.lr, vcpu->arch.ctr);
	printk("srr0: %08lx srr1: %08lx\n", vcpu->arch.srr0, vcpu->arch.srr1);

	printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);

	for (i = 0; i < 32; i += 4) {
		printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
		       vcpu->arch.gpr[i],
		       vcpu->arch.gpr[i+1],
		       vcpu->arch.gpr[i+2],
		       vcpu->arch.gpr[i+3]);
	}
}

static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
                                       unsigned int priority)
{
	set_bit(priority, &vcpu->arch.pending_exceptions);
}

void kvmppc_core_queue_program(struct kvm_vcpu *vcpu)
{
	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
}

void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
{
	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
}

int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
{
	return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
}

void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
                                struct kvm_interrupt *irq)
{
	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_EXTERNAL);
}

/* Deliver the interrupt of the corresponding priority, if possible. */
static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
                                        unsigned int priority)
{
	int allowed = 0;
	ulong msr_mask;

	switch (priority) {
	case BOOKE_IRQPRIO_PROGRAM:
	case BOOKE_IRQPRIO_DTLB_MISS:
	case BOOKE_IRQPRIO_ITLB_MISS:
	case BOOKE_IRQPRIO_SYSCALL:
	case BOOKE_IRQPRIO_DATA_STORAGE:
	case BOOKE_IRQPRIO_INST_STORAGE:
	case BOOKE_IRQPRIO_FP_UNAVAIL:
	case BOOKE_IRQPRIO_AP_UNAVAIL:
	case BOOKE_IRQPRIO_ALIGNMENT:
		allowed = 1;
		msr_mask = MSR_CE|MSR_ME|MSR_DE;
		break;
	case BOOKE_IRQPRIO_CRITICAL:
	case BOOKE_IRQPRIO_WATCHDOG:
		allowed = vcpu->arch.msr & MSR_CE;
		msr_mask = MSR_ME;
		break;
	case BOOKE_IRQPRIO_MACHINE_CHECK:
		allowed = vcpu->arch.msr & MSR_ME;
		msr_mask = 0;
		break;
	case BOOKE_IRQPRIO_EXTERNAL:
	case BOOKE_IRQPRIO_DECREMENTER:
	case BOOKE_IRQPRIO_FIT:
		allowed = vcpu->arch.msr & MSR_EE;
		msr_mask = MSR_CE|MSR_ME|MSR_DE;
		break;
	case BOOKE_IRQPRIO_DEBUG:
		allowed = vcpu->arch.msr & MSR_DE;
		msr_mask = MSR_ME;
		break;
	}

	if (allowed) {
		vcpu->arch.srr0 = vcpu->arch.pc;
		vcpu->arch.srr1 = vcpu->arch.msr;
		vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[priority];
		kvmppc_set_msr(vcpu, vcpu->arch.msr & msr_mask);

		clear_bit(priority, &vcpu->arch.pending_exceptions);
	}

	return allowed;
}

/* Check pending exceptions and deliver one, if possible. */
void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
{
	unsigned long *pending = &vcpu->arch.pending_exceptions;
	unsigned int priority;

	priority = __ffs(*pending);
	while (priority <= BOOKE_MAX_INTERRUPT) {
		if (kvmppc_booke_irqprio_deliver(vcpu, priority))
			break;

		priority = find_next_bit(pending,
		                         BITS_PER_BYTE * sizeof(*pending),
		                         priority + 1);
	}
}

/**
 * kvmppc_handle_exit
 *
 * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
 */
int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
                       unsigned int exit_nr)
{
	enum emulation_result er;
	int r = RESUME_HOST;

	/* update before a new last_exit_type is rewritten */
	kvmppc_update_timing_stats(vcpu);

	local_irq_enable();

	run->exit_reason = KVM_EXIT_UNKNOWN;
	run->ready_for_interrupt_injection = 1;

	switch (exit_nr) {
	case BOOKE_INTERRUPT_MACHINE_CHECK:
		printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
		kvmppc_dump_vcpu(vcpu);
		r = RESUME_HOST;
		break;

	case BOOKE_INTERRUPT_EXTERNAL:
		kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
		if (need_resched())
			cond_resched();
		r = RESUME_GUEST;
		break;

	case BOOKE_INTERRUPT_DECREMENTER:
		/* Since we switched IVPR back to the host's value, the host
		 * handled this interrupt the moment we enabled interrupts.
		 * Now we just offer it a chance to reschedule the guest. */
		kvmppc_account_exit(vcpu, DEC_EXITS);
		if (need_resched())
			cond_resched();
		r = RESUME_GUEST;
		break;

	case BOOKE_INTERRUPT_PROGRAM:
		if (vcpu->arch.msr & MSR_PR) {
			/* Program traps generated by user-level software must be handled
			 * by the guest kernel. */
			vcpu->arch.esr = vcpu->arch.fault_esr;
			kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
			r = RESUME_GUEST;
			kvmppc_account_exit(vcpu, USR_PR_INST);
			break;
		}

		er = kvmppc_emulate_instruction(run, vcpu);
		switch (er) {
		case EMULATE_DONE:
			/* don't overwrite subtypes, just account kvm_stats */
			kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
			/* Future optimization: only reload non-volatiles if
			 * they were actually modified by emulation. */
			r = RESUME_GUEST_NV;
			break;
		case EMULATE_DO_DCR:
			run->exit_reason = KVM_EXIT_DCR;
			r = RESUME_HOST;
			break;
		case EMULATE_FAIL:
			/* XXX Deliver Program interrupt to guest. */
			printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
			       __func__, vcpu->arch.pc, vcpu->arch.last_inst);
			/* For debugging, encode the failing instruction and
			 * report it to userspace. */
			run->hw.hardware_exit_reason = ~0ULL << 32;
			run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
			r = RESUME_HOST;
			break;
		default:
			BUG();
		}
		break;

	case BOOKE_INTERRUPT_FP_UNAVAIL:
		kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
		kvmppc_account_exit(vcpu, FP_UNAVAIL);
		r = RESUME_GUEST;
		break;

	case BOOKE_INTERRUPT_DATA_STORAGE:
		vcpu->arch.dear = vcpu->arch.fault_dear;
		vcpu->arch.esr = vcpu->arch.fault_esr;
		kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
		kvmppc_account_exit(vcpu, DSI_EXITS);
		r = RESUME_GUEST;
		break;

	case BOOKE_INTERRUPT_INST_STORAGE:
		vcpu->arch.esr = vcpu->arch.fault_esr;
		kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
		kvmppc_account_exit(vcpu, ISI_EXITS);
		r = RESUME_GUEST;
		break;

	case BOOKE_INTERRUPT_SYSCALL:
		kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
		kvmppc_account_exit(vcpu, SYSCALL_EXITS);
		r = RESUME_GUEST;
		break;

	/* XXX move to a 440-specific file. */
	case BOOKE_INTERRUPT_DTLB_MISS: {
		unsigned long eaddr = vcpu->arch.fault_dear;
		int gtlb_index;
		gpa_t gpaddr;
		gfn_t gfn;

		/* Check the guest TLB. */
		gtlb_index = kvmppc_44x_dtlb_index(vcpu, eaddr);
		if (gtlb_index < 0) {
			/* The guest didn't have a mapping for it. */
			kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
			vcpu->arch.dear = vcpu->arch.fault_dear;
			vcpu->arch.esr = vcpu->arch.fault_esr;
			kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
			r = RESUME_GUEST;
			break;
		}

		gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
		gfn = gpaddr >> PAGE_SHIFT;

		if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
			/* The guest TLB had a mapping, but the shadow TLB
			 * didn't, and it is RAM. This could be because:
			 * a) the entry is mapping the host kernel, or
			 * b) the guest used a large mapping which we're faking
			 * Either way, we need to satisfy the fault without
			 * invoking the guest. */
			kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
			kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
			r = RESUME_GUEST;
		} else {
			/* Guest has mapped and accessed a page which is not
			 * actually RAM. */
			vcpu->arch.paddr_accessed = gpaddr;
			r = kvmppc_emulate_mmio(run, vcpu);
			kvmppc_account_exit(vcpu, MMIO_EXITS);
		}

		break;
	}

	/* XXX move to a 440-specific file. */
	case BOOKE_INTERRUPT_ITLB_MISS: {
		unsigned long eaddr = vcpu->arch.pc;
		gpa_t gpaddr;
		gfn_t gfn;
		int gtlb_index;

		r = RESUME_GUEST;

		/* Check the guest TLB. */
		gtlb_index = kvmppc_44x_itlb_index(vcpu, eaddr);
		if (gtlb_index < 0) {
			/* The guest didn't have a mapping for it. */
			kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
			kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
			break;
		}

		kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);

		gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
		gfn = gpaddr >> PAGE_SHIFT;

		if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
			/* The guest TLB had a mapping, but the shadow TLB
			 * didn't. This could be because:
			 * a) the entry is mapping the host kernel, or
			 * b) the guest used a large mapping which we're faking
			 * Either way, we need to satisfy the fault without
			 * invoking the guest. */
			kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
		} else {
			/* Guest mapped and leaped at non-RAM! */
			kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
		}

		break;
	}

	case BOOKE_INTERRUPT_DEBUG: {
		u32 dbsr;

		vcpu->arch.pc = mfspr(SPRN_CSRR0);

		/* clear IAC events in DBSR register */
		dbsr = mfspr(SPRN_DBSR);
		dbsr &= DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4;
		mtspr(SPRN_DBSR, dbsr);

		run->exit_reason = KVM_EXIT_DEBUG;
		kvmppc_account_exit(vcpu, DEBUG_EXITS);
		r = RESUME_HOST;
		break;
	}

	default:
		printk(KERN_EMERG "exit_nr %d\n", exit_nr);
		BUG();
	}

	local_irq_disable();

	kvmppc_core_deliver_interrupts(vcpu);

	if (!(r & RESUME_HOST)) {
		/* To avoid clobbering exit_reason, only check for signals if
		 * we aren't already exiting to userspace for some other
		 * reason. */
		if (signal_pending(current)) {
			run->exit_reason = KVM_EXIT_INTR;
			r = (-EINTR << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
			kvmppc_account_exit(vcpu, SIGNAL_EXITS);
		}
	}

	return r;
}

/* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
{
	vcpu->arch.pc = 0;
	vcpu->arch.msr = 0;
	vcpu->arch.gpr[1] = (16<<20) - 8; /* -8 for the callee-save LR slot */

	vcpu->arch.shadow_pid = 1;

	/* Eye-catching number so we know if the guest takes an interrupt
	 * before it's programmed its own IVPR. */
	vcpu->arch.ivpr = 0x55550000;

	kvmppc_init_timing_stats(vcpu);

	return kvmppc_core_vcpu_setup(vcpu);
}

int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{
	int i;

	regs->pc = vcpu->arch.pc;
	regs->cr = vcpu->arch.cr;
	regs->ctr = vcpu->arch.ctr;
	regs->lr = vcpu->arch.lr;
	regs->xer = vcpu->arch.xer;
	regs->msr = vcpu->arch.msr;
	regs->srr0 = vcpu->arch.srr0;
	regs->srr1 = vcpu->arch.srr1;
	regs->pid = vcpu->arch.pid;
	regs->sprg0 = vcpu->arch.sprg0;
	regs->sprg1 = vcpu->arch.sprg1;
	regs->sprg2 = vcpu->arch.sprg2;
	regs->sprg3 = vcpu->arch.sprg3;
	regs->sprg5 = vcpu->arch.sprg4;
	regs->sprg6 = vcpu->arch.sprg5;
	regs->sprg7 = vcpu->arch.sprg6;

	for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
		regs->gpr[i] = vcpu->arch.gpr[i];

	return 0;
}

int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
{
	int i;

	vcpu->arch.pc = regs->pc;
	vcpu->arch.cr = regs->cr;
	vcpu->arch.ctr = regs->ctr;
	vcpu->arch.lr = regs->lr;
	vcpu->arch.xer = regs->xer;
	kvmppc_set_msr(vcpu, regs->msr);
	vcpu->arch.srr0 = regs->srr0;
	vcpu->arch.srr1 = regs->srr1;
	vcpu->arch.sprg0 = regs->sprg0;
	vcpu->arch.sprg1 = regs->sprg1;
	vcpu->arch.sprg2 = regs->sprg2;
	vcpu->arch.sprg3 = regs->sprg3;
	vcpu->arch.sprg5 = regs->sprg4;
	vcpu->arch.sprg6 = regs->sprg5;
	vcpu->arch.sprg7 = regs->sprg6;

	for (i = 0; i < ARRAY_SIZE(vcpu->arch.gpr); i++)
		vcpu->arch.gpr[i] = regs->gpr[i];

	return 0;
}

int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
                                  struct kvm_sregs *sregs)
{
	return -ENOTSUPP;
}

int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
                                  struct kvm_sregs *sregs)
{
	return -ENOTSUPP;
}

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 kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
                                  struct kvm_translation *tr)
{
	return kvmppc_core_vcpu_translate(vcpu, tr);
}

int kvmppc_booke_init(void)
{
	unsigned long ivor[16];
	unsigned long max_ivor = 0;
	int i;

	/* We install our own exception handlers by hijacking IVPR. IVPR must
	 * be 16-bit aligned, so we need a 64KB allocation. */
	kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
	                                         VCPU_SIZE_ORDER);
	if (!kvmppc_booke_handlers)
		return -ENOMEM;

	/* XXX make sure our handlers are smaller than Linux's */

	/* Copy our interrupt handlers to match host IVORs. That way we don't
	 * have to swap the IVORs on every guest/host transition. */
	ivor[0] = mfspr(SPRN_IVOR0);
	ivor[1] = mfspr(SPRN_IVOR1);
	ivor[2] = mfspr(SPRN_IVOR2);
	ivor[3] = mfspr(SPRN_IVOR3);
	ivor[4] = mfspr(SPRN_IVOR4);
	ivor[5] = mfspr(SPRN_IVOR5);
	ivor[6] = mfspr(SPRN_IVOR6);
	ivor[7] = mfspr(SPRN_IVOR7);
	ivor[8] = mfspr(SPRN_IVOR8);
	ivor[9] = mfspr(SPRN_IVOR9);
	ivor[10] = mfspr(SPRN_IVOR10);
	ivor[11] = mfspr(SPRN_IVOR11);
	ivor[12] = mfspr(SPRN_IVOR12);
	ivor[13] = mfspr(SPRN_IVOR13);
	ivor[14] = mfspr(SPRN_IVOR14);
	ivor[15] = mfspr(SPRN_IVOR15);

	for (i = 0; i < 16; i++) {
		if (ivor[i] > max_ivor)
			max_ivor = ivor[i];

		memcpy((void *)kvmppc_booke_handlers + ivor[i],
		       kvmppc_handlers_start + i * kvmppc_handler_len,
		       kvmppc_handler_len);
	}
	flush_icache_range(kvmppc_booke_handlers,
	                   kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);

	return 0;
}

void __exit kvmppc_booke_exit(void)
{
	free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
	kvm_exit();
}
Commit	Line	Data
bbf45ba5 HB	1	/*
	2	* This program is free software; you can redistribute it and/or modify
	3	* it under the terms of the GNU General Public License, version 2, as
	4	* published by the Free Software Foundation.
	5	*
	6	* This program is distributed in the hope that it will be useful,
	7	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	8	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	9	* GNU General Public License for more details.
	10	*
	11	* You should have received a copy of the GNU General Public License
	12	* along with this program; if not, write to the Free Software
	13	* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	14	*
	15	* Copyright IBM Corp. 2007
	16	*
	17	* Authors: Hollis Blanchard <hollisb@us.ibm.com>
	18	* Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
	19	*/
	20
	21	#include <linux/errno.h>
	22	#include <linux/err.h>
	23	#include <linux/kvm_host.h>
	24	#include <linux/module.h>
	25	#include <linux/vmalloc.h>
	26	#include <linux/fs.h>
7924bd41	27
bbf45ba5 HB	28	#include <asm/cputable.h>
	29	#include <asm/uaccess.h>
	30	#include <asm/kvm_ppc.h>
73e75b41	31	#include "timing.h"
d9fbd03d	32	#include <asm/cacheflush.h>
7924bd41	33	#include <asm/kvm_44x.h>
bbf45ba5	34
75f74f0d	35	#include "booke.h"
bbf45ba5 HB	36	#include "44x_tlb.h"
bbf45ba5 HB	37
d9fbd03d HB	38	unsigned long kvmppc_booke_handlers;
d9fbd03d HB	39
bbf45ba5 HB	40	#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
	41	#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
	42
	43	struct kvm_stats_debugfs_item debugfs_entries[] = {
bbf45ba5 HB	44	{ "mmio", VCPU_STAT(mmio_exits) },
	45	{ "dcr", VCPU_STAT(dcr_exits) },
	46	{ "sig", VCPU_STAT(signal_exits) },
bbf45ba5 HB	47	{ "itlb_r", VCPU_STAT(itlb_real_miss_exits) },
	48	{ "itlb_v", VCPU_STAT(itlb_virt_miss_exits) },
	49	{ "dtlb_r", VCPU_STAT(dtlb_real_miss_exits) },
	50	{ "dtlb_v", VCPU_STAT(dtlb_virt_miss_exits) },
	51	{ "sysc", VCPU_STAT(syscall_exits) },
	52	{ "isi", VCPU_STAT(isi_exits) },
	53	{ "dsi", VCPU_STAT(dsi_exits) },
	54	{ "inst_emu", VCPU_STAT(emulated_inst_exits) },
	55	{ "dec", VCPU_STAT(dec_exits) },
	56	{ "ext_intr", VCPU_STAT(ext_intr_exits) },
45c5eb67	57	{ "halt_wakeup", VCPU_STAT(halt_wakeup) },
bbf45ba5 HB	58	{ NULL }
	59	};
	60
bbf45ba5 HB	61	/* TODO: use vcpu_printf() */
	62	void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
	63	{
	64	int i;
	65
5cf8ca22 HB	66	printk("pc: %08lx msr: %08lx\n", vcpu->arch.pc, vcpu->arch.msr);
	67	printk("lr: %08lx ctr: %08lx\n", vcpu->arch.lr, vcpu->arch.ctr);
	68	printk("srr0: %08lx srr1: %08lx\n", vcpu->arch.srr0, vcpu->arch.srr1);
bbf45ba5 HB	69
	70	printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);
	71
	72	for (i = 0; i < 32; i += 4) {
5cf8ca22	73	printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
bbf45ba5 HB	74	vcpu->arch.gpr[i],
	75	vcpu->arch.gpr[i+1],
	76	vcpu->arch.gpr[i+2],
	77	vcpu->arch.gpr[i+3]);
	78	}
	79	}
	80
d4cf3892 HB	81	static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
d4cf3892 HB	82	unsigned int priority)
9dd921cf	83	{
9dd921cf HB	84	set_bit(priority, &vcpu->arch.pending_exceptions);
	85	}
	86
9dd921cf HB	87	void kvmppc_core_queue_program(struct kvm_vcpu *vcpu)
9dd921cf HB	88	{
d4cf3892	89	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
9dd921cf HB	90	}
	91
	92	void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
	93	{
d4cf3892	94	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
9dd921cf HB	95	}
	96
	97	int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
	98	{
d4cf3892	99	return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
9dd921cf HB	100	}
	101
	102	void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
	103	struct kvm_interrupt *irq)
	104	{
d4cf3892	105	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_EXTERNAL);
9dd921cf HB	106	}
9dd921cf HB	107
d4cf3892 HB	108	/* Deliver the interrupt of the corresponding priority, if possible. */
	109	static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
	110	unsigned int priority)
bbf45ba5	111	{
d4cf3892 HB	112	int allowed = 0;
	113	ulong msr_mask;
	114
	115	switch (priority) {
	116	case BOOKE_IRQPRIO_PROGRAM:
	117	case BOOKE_IRQPRIO_DTLB_MISS:
	118	case BOOKE_IRQPRIO_ITLB_MISS:
	119	case BOOKE_IRQPRIO_SYSCALL:
	120	case BOOKE_IRQPRIO_DATA_STORAGE:
	121	case BOOKE_IRQPRIO_INST_STORAGE:
	122	case BOOKE_IRQPRIO_FP_UNAVAIL:
	123	case BOOKE_IRQPRIO_AP_UNAVAIL:
	124	case BOOKE_IRQPRIO_ALIGNMENT:
	125	allowed = 1;
	126	msr_mask = MSR_CE\|MSR_ME\|MSR_DE;
bbf45ba5	127	break;
d4cf3892 HB	128	case BOOKE_IRQPRIO_CRITICAL:
	129	case BOOKE_IRQPRIO_WATCHDOG:
	130	allowed = vcpu->arch.msr & MSR_CE;
	131	msr_mask = MSR_ME;
bbf45ba5	132	break;
d4cf3892 HB	133	case BOOKE_IRQPRIO_MACHINE_CHECK:
	134	allowed = vcpu->arch.msr & MSR_ME;
	135	msr_mask = 0;
bbf45ba5	136	break;
d4cf3892 HB	137	case BOOKE_IRQPRIO_EXTERNAL:
	138	case BOOKE_IRQPRIO_DECREMENTER:
	139	case BOOKE_IRQPRIO_FIT:
	140	allowed = vcpu->arch.msr & MSR_EE;
	141	msr_mask = MSR_CE\|MSR_ME\|MSR_DE;
bbf45ba5	142	break;
d4cf3892 HB	143	case BOOKE_IRQPRIO_DEBUG:
	144	allowed = vcpu->arch.msr & MSR_DE;
	145	msr_mask = MSR_ME;
bbf45ba5	146	break;
bbf45ba5 HB	147	}
bbf45ba5 HB	148
d4cf3892 HB	149	if (allowed) {
	150	vcpu->arch.srr0 = vcpu->arch.pc;
	151	vcpu->arch.srr1 = vcpu->arch.msr;
	152	vcpu->arch.pc = vcpu->arch.ivpr \| vcpu->arch.ivor[priority];
	153	kvmppc_set_msr(vcpu, vcpu->arch.msr & msr_mask);
bbf45ba5	154
d4cf3892	155	clear_bit(priority, &vcpu->arch.pending_exceptions);
bbf45ba5 HB	156	}
bbf45ba5 HB	157
d4cf3892	158	return allowed;
bbf45ba5 HB	159	}
	160
	161	/* Check pending exceptions and deliver one, if possible. */
9dd921cf	162	void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu)
bbf45ba5 HB	163	{
bbf45ba5 HB	164	unsigned long *pending = &vcpu->arch.pending_exceptions;
bbf45ba5 HB	165	unsigned int priority;
bbf45ba5 HB	166
9ab80843	167	priority = __ffs(*pending);
bbf45ba5	168	while (priority <= BOOKE_MAX_INTERRUPT) {
d4cf3892	169	if (kvmppc_booke_irqprio_deliver(vcpu, priority))
bbf45ba5	170	break;
bbf45ba5 HB	171
	172	priority = find_next_bit(pending,
	173	BITS_PER_BYTE * sizeof(*pending),
	174	priority + 1);
	175	}
	176	}
	177
bbf45ba5 HB	178	/**
	179	* kvmppc_handle_exit
	180	*
	181	* Return value is in the form (errcode<<2 \| RESUME_FLAG_HOST \| RESUME_FLAG_NV)
	182	*/
	183	int kvmppc_handle_exit(struct kvm_run run, struct kvm_vcpu vcpu,
	184	unsigned int exit_nr)
	185	{
	186	enum emulation_result er;
	187	int r = RESUME_HOST;
	188
73e75b41 HB	189	/* update before a new last_exit_type is rewritten */
	190	kvmppc_update_timing_stats(vcpu);
	191
bbf45ba5 HB	192	local_irq_enable();
	193
	194	run->exit_reason = KVM_EXIT_UNKNOWN;
	195	run->ready_for_interrupt_injection = 1;
	196
	197	switch (exit_nr) {
	198	case BOOKE_INTERRUPT_MACHINE_CHECK:
	199	printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
	200	kvmppc_dump_vcpu(vcpu);
	201	r = RESUME_HOST;
	202	break;
	203
	204	case BOOKE_INTERRUPT_EXTERNAL:
7b701591	205	kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
1b6766c7 HB	206	if (need_resched())
	207	cond_resched();
	208	r = RESUME_GUEST;
	209	break;
	210
bbf45ba5 HB	211	case BOOKE_INTERRUPT_DECREMENTER:
	212	/* Since we switched IVPR back to the host's value, the host
	213	* handled this interrupt the moment we enabled interrupts.
	214	* Now we just offer it a chance to reschedule the guest. */
7b701591	215	kvmppc_account_exit(vcpu, DEC_EXITS);
bbf45ba5 HB	216	if (need_resched())
bbf45ba5 HB	217	cond_resched();
bbf45ba5 HB	218	r = RESUME_GUEST;
	219	break;
	220
	221	case BOOKE_INTERRUPT_PROGRAM:
	222	if (vcpu->arch.msr & MSR_PR) {
	223	/* Program traps generated by user-level software must be handled
	224	* by the guest kernel. */
	225	vcpu->arch.esr = vcpu->arch.fault_esr;
d4cf3892	226	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
bbf45ba5	227	r = RESUME_GUEST;
7b701591	228	kvmppc_account_exit(vcpu, USR_PR_INST);
bbf45ba5 HB	229	break;
	230	}
	231
	232	er = kvmppc_emulate_instruction(run, vcpu);
	233	switch (er) {
	234	case EMULATE_DONE:
73e75b41	235	/* don't overwrite subtypes, just account kvm_stats */
7b701591	236	kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
bbf45ba5 HB	237	/* Future optimization: only reload non-volatiles if
bbf45ba5 HB	238	* they were actually modified by emulation. */
bbf45ba5 HB	239	r = RESUME_GUEST_NV;
	240	break;
	241	case EMULATE_DO_DCR:
	242	run->exit_reason = KVM_EXIT_DCR;
	243	r = RESUME_HOST;
	244	break;
	245	case EMULATE_FAIL:
	246	/* XXX Deliver Program interrupt to guest. */
5cf8ca22	247	printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
bbf45ba5 HB	248	__func__, vcpu->arch.pc, vcpu->arch.last_inst);
	249	/* For debugging, encode the failing instruction and
	250	* report it to userspace. */
	251	run->hw.hardware_exit_reason = ~0ULL << 32;
	252	run->hw.hardware_exit_reason \|= vcpu->arch.last_inst;
	253	r = RESUME_HOST;
	254	break;
	255	default:
	256	BUG();
	257	}
	258	break;
	259
de368dce	260	case BOOKE_INTERRUPT_FP_UNAVAIL:
d4cf3892	261	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
7b701591	262	kvmppc_account_exit(vcpu, FP_UNAVAIL);
de368dce CE	263	r = RESUME_GUEST;
	264	break;
	265
bbf45ba5 HB	266	case BOOKE_INTERRUPT_DATA_STORAGE:
	267	vcpu->arch.dear = vcpu->arch.fault_dear;
	268	vcpu->arch.esr = vcpu->arch.fault_esr;
d4cf3892	269	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
7b701591	270	kvmppc_account_exit(vcpu, DSI_EXITS);
bbf45ba5 HB	271	r = RESUME_GUEST;
	272	break;
	273
	274	case BOOKE_INTERRUPT_INST_STORAGE:
	275	vcpu->arch.esr = vcpu->arch.fault_esr;
d4cf3892	276	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
7b701591	277	kvmppc_account_exit(vcpu, ISI_EXITS);
bbf45ba5 HB	278	r = RESUME_GUEST;
	279	break;
	280
	281	case BOOKE_INTERRUPT_SYSCALL:
d4cf3892	282	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
7b701591	283	kvmppc_account_exit(vcpu, SYSCALL_EXITS);
bbf45ba5 HB	284	r = RESUME_GUEST;
	285	break;
	286
7924bd41	287	/* XXX move to a 440-specific file. */
bbf45ba5	288	case BOOKE_INTERRUPT_DTLB_MISS: {
bbf45ba5	289	unsigned long eaddr = vcpu->arch.fault_dear;
7924bd41	290	int gtlb_index;
475e7cdd	291	gpa_t gpaddr;
bbf45ba5 HB	292	gfn_t gfn;
	293
	294	/* Check the guest TLB. */
7924bd41 HB	295	gtlb_index = kvmppc_44x_dtlb_index(vcpu, eaddr);
7924bd41 HB	296	if (gtlb_index < 0) {
bbf45ba5	297	/* The guest didn't have a mapping for it. */
d4cf3892	298	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
bbf45ba5 HB	299	vcpu->arch.dear = vcpu->arch.fault_dear;
bbf45ba5 HB	300	vcpu->arch.esr = vcpu->arch.fault_esr;
7b701591	301	kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
bbf45ba5 HB	302	r = RESUME_GUEST;
	303	break;
	304	}
	305
be8d1cae	306	gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
475e7cdd	307	gfn = gpaddr >> PAGE_SHIFT;
bbf45ba5 HB	308
	309	if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
	310	/* The guest TLB had a mapping, but the shadow TLB
	311	* didn't, and it is RAM. This could be because:
	312	* a) the entry is mapping the host kernel, or
	313	* b) the guest used a large mapping which we're faking
	314	* Either way, we need to satisfy the fault without
	315	* invoking the guest. */
58a96214	316	kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
7b701591	317	kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
bbf45ba5 HB	318	r = RESUME_GUEST;
	319	} else {
	320	/* Guest has mapped and accessed a page which is not
	321	* actually RAM. */
475e7cdd	322	vcpu->arch.paddr_accessed = gpaddr;
bbf45ba5	323	r = kvmppc_emulate_mmio(run, vcpu);
7b701591	324	kvmppc_account_exit(vcpu, MMIO_EXITS);
bbf45ba5 HB	325	}
	326
	327	break;
	328	}
	329
7924bd41	330	/* XXX move to a 440-specific file. */
bbf45ba5	331	case BOOKE_INTERRUPT_ITLB_MISS: {
bbf45ba5	332	unsigned long eaddr = vcpu->arch.pc;
89168618	333	gpa_t gpaddr;
bbf45ba5	334	gfn_t gfn;
7924bd41	335	int gtlb_index;
bbf45ba5 HB	336
	337	r = RESUME_GUEST;
	338
	339	/* Check the guest TLB. */
7924bd41 HB	340	gtlb_index = kvmppc_44x_itlb_index(vcpu, eaddr);
7924bd41 HB	341	if (gtlb_index < 0) {
bbf45ba5	342	/* The guest didn't have a mapping for it. */
d4cf3892	343	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
7b701591	344	kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
bbf45ba5 HB	345	break;
	346	}
	347
7b701591	348	kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
bbf45ba5	349
be8d1cae	350	gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
89168618	351	gfn = gpaddr >> PAGE_SHIFT;
bbf45ba5 HB	352
	353	if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
	354	/* The guest TLB had a mapping, but the shadow TLB
	355	* didn't. This could be because:
	356	* a) the entry is mapping the host kernel, or
	357	* b) the guest used a large mapping which we're faking
	358	* Either way, we need to satisfy the fault without
	359	* invoking the guest. */
58a96214	360	kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
bbf45ba5 HB	361	} else {
bbf45ba5 HB	362	/* Guest mapped and leaped at non-RAM! */
d4cf3892	363	kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
bbf45ba5 HB	364	}
	365
	366	break;
	367	}
	368
6a0ab738 HB	369	case BOOKE_INTERRUPT_DEBUG: {
	370	u32 dbsr;
	371
	372	vcpu->arch.pc = mfspr(SPRN_CSRR0);
	373
	374	/* clear IAC events in DBSR register */
	375	dbsr = mfspr(SPRN_DBSR);
	376	dbsr &= DBSR_IAC1 \| DBSR_IAC2 \| DBSR_IAC3 \| DBSR_IAC4;
	377	mtspr(SPRN_DBSR, dbsr);
	378
	379	run->exit_reason = KVM_EXIT_DEBUG;
7b701591	380	kvmppc_account_exit(vcpu, DEBUG_EXITS);
6a0ab738 HB	381	r = RESUME_HOST;
	382	break;
	383	}
	384
bbf45ba5 HB	385	default:
	386	printk(KERN_EMERG "exit_nr %d\n", exit_nr);
	387	BUG();
	388	}
	389
	390	local_irq_disable();
	391
9dd921cf	392	kvmppc_core_deliver_interrupts(vcpu);
bbf45ba5	393
bbf45ba5 HB	394	if (!(r & RESUME_HOST)) {
	395	/* To avoid clobbering exit_reason, only check for signals if
	396	* we aren't already exiting to userspace for some other
	397	* reason. */
	398	if (signal_pending(current)) {
	399	run->exit_reason = KVM_EXIT_INTR;
	400	r = (-EINTR << 2) \| RESUME_HOST \| (r & RESUME_FLAG_NV);
7b701591	401	kvmppc_account_exit(vcpu, SIGNAL_EXITS);
bbf45ba5 HB	402	}
	403	}
	404
	405	return r;
	406	}
	407
	408	/* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
	409	int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
	410	{
bbf45ba5 HB	411	vcpu->arch.pc = 0;
	412	vcpu->arch.msr = 0;
	413	vcpu->arch.gpr[1] = (16<<20) - 8; /* -8 for the callee-save LR slot */
	414
49dd2c49 HB	415	vcpu->arch.shadow_pid = 1;
49dd2c49 HB	416
bbf45ba5 HB	417	/* Eye-catching number so we know if the guest takes an interrupt
	418	* before it's programmed its own IVPR. */
	419	vcpu->arch.ivpr = 0x55550000;
	420
73e75b41 HB	421	kvmppc_init_timing_stats(vcpu);
73e75b41 HB	422
5cbb5106	423	return kvmppc_core_vcpu_setup(vcpu);
bbf45ba5 HB	424	}
	425
	426	int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu vcpu, struct kvm_regs regs)
	427	{
	428	int i;
	429
	430	regs->pc = vcpu->arch.pc;
	431	regs->cr = vcpu->arch.cr;
	432	regs->ctr = vcpu->arch.ctr;
	433	regs->lr = vcpu->arch.lr;
	434	regs->xer = vcpu->arch.xer;
	435	regs->msr = vcpu->arch.msr;
	436	regs->srr0 = vcpu->arch.srr0;
	437	regs->srr1 = vcpu->arch.srr1;
	438	regs->pid = vcpu->arch.pid;
	439	regs->sprg0 = vcpu->arch.sprg0;
	440	regs->sprg1 = vcpu->arch.sprg1;
	441	regs->sprg2 = vcpu->arch.sprg2;
	442	regs->sprg3 = vcpu->arch.sprg3;
	443	regs->sprg5 = vcpu->arch.sprg4;
	444	regs->sprg6 = vcpu->arch.sprg5;
	445	regs->sprg7 = vcpu->arch.sprg6;
	446
	447	for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
	448	regs->gpr[i] = vcpu->arch.gpr[i];
	449
	450	return 0;
	451	}
	452
	453	int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu vcpu, struct kvm_regs regs)
	454	{
	455	int i;
	456
	457	vcpu->arch.pc = regs->pc;
	458	vcpu->arch.cr = regs->cr;
	459	vcpu->arch.ctr = regs->ctr;
	460	vcpu->arch.lr = regs->lr;
	461	vcpu->arch.xer = regs->xer;
b8fd68ac	462	kvmppc_set_msr(vcpu, regs->msr);
bbf45ba5 HB	463	vcpu->arch.srr0 = regs->srr0;
	464	vcpu->arch.srr1 = regs->srr1;
	465	vcpu->arch.sprg0 = regs->sprg0;
	466	vcpu->arch.sprg1 = regs->sprg1;
	467	vcpu->arch.sprg2 = regs->sprg2;
	468	vcpu->arch.sprg3 = regs->sprg3;
	469	vcpu->arch.sprg5 = regs->sprg4;
	470	vcpu->arch.sprg6 = regs->sprg5;
	471	vcpu->arch.sprg7 = regs->sprg6;
	472
	473	for (i = 0; i < ARRAY_SIZE(vcpu->arch.gpr); i++)
	474	vcpu->arch.gpr[i] = regs->gpr[i];
	475
	476	return 0;
	477	}
	478
	479	int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
	480	struct kvm_sregs *sregs)
	481	{
	482	return -ENOTSUPP;
	483	}
	484
	485	int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
	486	struct kvm_sregs *sregs)
	487	{
	488	return -ENOTSUPP;
	489	}
	490
	491	int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu)
	492	{
	493	return -ENOTSUPP;
	494	}
	495
	496	int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu vcpu, struct kvm_fpu fpu)
	497	{
	498	return -ENOTSUPP;
	499	}
	500
bbf45ba5 HB	501	int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
	502	struct kvm_translation *tr)
	503	{
5cbb5106	504	return kvmppc_core_vcpu_translate(vcpu, tr);
bbf45ba5	505	}
d9fbd03d	506
db93f574	507	int kvmppc_booke_init(void)
d9fbd03d HB	508	{
	509	unsigned long ivor[16];
	510	unsigned long max_ivor = 0;
	511	int i;
	512
	513	/* We install our own exception handlers by hijacking IVPR. IVPR must
	514	* be 16-bit aligned, so we need a 64KB allocation. */
	515	kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL \| __GFP_ZERO,
	516	VCPU_SIZE_ORDER);
	517	if (!kvmppc_booke_handlers)
	518	return -ENOMEM;
	519
	520	/* XXX make sure our handlers are smaller than Linux's */
	521
	522	/* Copy our interrupt handlers to match host IVORs. That way we don't
	523	* have to swap the IVORs on every guest/host transition. */
	524	ivor[0] = mfspr(SPRN_IVOR0);
	525	ivor[1] = mfspr(SPRN_IVOR1);
	526	ivor[2] = mfspr(SPRN_IVOR2);
	527	ivor[3] = mfspr(SPRN_IVOR3);
	528	ivor[4] = mfspr(SPRN_IVOR4);
	529	ivor[5] = mfspr(SPRN_IVOR5);
	530	ivor[6] = mfspr(SPRN_IVOR6);
	531	ivor[7] = mfspr(SPRN_IVOR7);
	532	ivor[8] = mfspr(SPRN_IVOR8);
	533	ivor[9] = mfspr(SPRN_IVOR9);
	534	ivor[10] = mfspr(SPRN_IVOR10);
	535	ivor[11] = mfspr(SPRN_IVOR11);
	536	ivor[12] = mfspr(SPRN_IVOR12);
	537	ivor[13] = mfspr(SPRN_IVOR13);
	538	ivor[14] = mfspr(SPRN_IVOR14);
	539	ivor[15] = mfspr(SPRN_IVOR15);
	540
	541	for (i = 0; i < 16; i++) {
	542	if (ivor[i] > max_ivor)
	543	max_ivor = ivor[i];
	544
	545	memcpy((void *)kvmppc_booke_handlers + ivor[i],
	546	kvmppc_handlers_start + i * kvmppc_handler_len,
	547	kvmppc_handler_len);
	548	}
	549	flush_icache_range(kvmppc_booke_handlers,
	550	kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
	551
db93f574	552	return 0;
d9fbd03d HB	553	}
d9fbd03d HB	554
db93f574	555	void __exit kvmppc_booke_exit(void)
d9fbd03d HB	556	{
	557	free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);
	558	kvm_exit();
	559	}