MIPS: KVM: Rename files to remove the prefix "kvm_" and "kvm_mips_"

Since all the files are in arch/mips/kvm/, there's no need of the prefixes
"kvm_" and "kvm_mips_".

Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 0 insertions, 809 deletions

diff --git a/arch/mips/kvm/kvm_tlb.c b/arch/mips/kvm/kvm_tlb.c
deleted file mode 100644
index bbcd822..0000000
--- a/arch/mips/kvm/kvm_tlb.c
+++ /dev/null
@@ -1,809 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * KVM/MIPS TLB handling, this file is part of the Linux host kernel so that
- * TLB handlers run from KSEG0
- *
- * Copyright (C) 2012  MIPS Technologies, Inc.  All rights reserved.
- * Authors: Sanjay Lal <sanjayl@kymasys.com>
- */
-
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/mm.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/kvm_host.h>
-#include <linux/srcu.h>
-
-#include <asm/cpu.h>
-#include <asm/bootinfo.h>
-#include <asm/mmu_context.h>
-#include <asm/pgtable.h>
-#include <asm/cacheflush.h>
-#include <asm/tlb.h>
-
-#undef CONFIG_MIPS_MT
-#include <asm/r4kcache.h>
-#define CONFIG_MIPS_MT
-
-#define KVM_GUEST_PC_TLB    0
-#define KVM_GUEST_SP_TLB    1
-
-#define PRIx64 "llx"
-
-atomic_t kvm_mips_instance;
-EXPORT_SYMBOL(kvm_mips_instance);
-
-/* These function pointers are initialized once the KVM module is loaded */
-pfn_t (*kvm_mips_gfn_to_pfn)(struct kvm *kvm, gfn_t gfn);
-EXPORT_SYMBOL(kvm_mips_gfn_to_pfn);
-
-void (*kvm_mips_release_pfn_clean)(pfn_t pfn);
-EXPORT_SYMBOL(kvm_mips_release_pfn_clean);
-
-bool (*kvm_mips_is_error_pfn)(pfn_t pfn);
-EXPORT_SYMBOL(kvm_mips_is_error_pfn);
-
-uint32_t kvm_mips_get_kernel_asid(struct kvm_vcpu *vcpu)
-{
-	return vcpu->arch.guest_kernel_asid[smp_processor_id()] & ASID_MASK;
-}
-
-uint32_t kvm_mips_get_user_asid(struct kvm_vcpu *vcpu)
-{
-	return vcpu->arch.guest_user_asid[smp_processor_id()] & ASID_MASK;
-}
-
-inline uint32_t kvm_mips_get_commpage_asid(struct kvm_vcpu *vcpu)
-{
-	return vcpu->kvm->arch.commpage_tlb;
-}
-
-/* Structure defining an tlb entry data set. */
-
-void kvm_mips_dump_host_tlbs(void)
-{
-	unsigned long old_entryhi;
-	unsigned long old_pagemask;
-	struct kvm_mips_tlb tlb;
-	unsigned long flags;
-	int i;
-
-	local_irq_save(flags);
-
-	old_entryhi = read_c0_entryhi();
-	old_pagemask = read_c0_pagemask();
-
-	kvm_info("HOST TLBs:\n");
-	kvm_info("ASID: %#lx\n", read_c0_entryhi() & ASID_MASK);
-
-	for (i = 0; i < current_cpu_data.tlbsize; i++) {
-		write_c0_index(i);
-		mtc0_tlbw_hazard();
-
-		tlb_read();
-		tlbw_use_hazard();
-
-		tlb.tlb_hi = read_c0_entryhi();
-		tlb.tlb_lo0 = read_c0_entrylo0();
-		tlb.tlb_lo1 = read_c0_entrylo1();
-		tlb.tlb_mask = read_c0_pagemask();
-
-		kvm_info("TLB%c%3d Hi 0x%08lx ",
-			 (tlb.tlb_lo0 | tlb.tlb_lo1) & MIPS3_PG_V ? ' ' : '*',
-			 i, tlb.tlb_hi);
-		kvm_info("Lo0=0x%09" PRIx64 " %c%c attr %lx ",
-			 (uint64_t) mips3_tlbpfn_to_paddr(tlb.tlb_lo0),
-			 (tlb.tlb_lo0 & MIPS3_PG_D) ? 'D' : ' ',
-			 (tlb.tlb_lo0 & MIPS3_PG_G) ? 'G' : ' ',
-			 (tlb.tlb_lo0 >> 3) & 7);
-		kvm_info("Lo1=0x%09" PRIx64 " %c%c attr %lx sz=%lx\n",
-			 (uint64_t) mips3_tlbpfn_to_paddr(tlb.tlb_lo1),
-			 (tlb.tlb_lo1 & MIPS3_PG_D) ? 'D' : ' ',
-			 (tlb.tlb_lo1 & MIPS3_PG_G) ? 'G' : ' ',
-			 (tlb.tlb_lo1 >> 3) & 7, tlb.tlb_mask);
-	}
-	write_c0_entryhi(old_entryhi);
-	write_c0_pagemask(old_pagemask);
-	mtc0_tlbw_hazard();
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(kvm_mips_dump_host_tlbs);
-
-void kvm_mips_dump_guest_tlbs(struct kvm_vcpu *vcpu)
-{
-	struct mips_coproc *cop0 = vcpu->arch.cop0;
-	struct kvm_mips_tlb tlb;
-	int i;
-
-	kvm_info("Guest TLBs:\n");
-	kvm_info("Guest EntryHi: %#lx\n", kvm_read_c0_guest_entryhi(cop0));
-
-	for (i = 0; i < KVM_MIPS_GUEST_TLB_SIZE; i++) {
-		tlb = vcpu->arch.guest_tlb[i];
-		kvm_info("TLB%c%3d Hi 0x%08lx ",
-			 (tlb.tlb_lo0 | tlb.tlb_lo1) & MIPS3_PG_V ? ' ' : '*',
-			 i, tlb.tlb_hi);
-		kvm_info("Lo0=0x%09" PRIx64 " %c%c attr %lx ",
-			 (uint64_t) mips3_tlbpfn_to_paddr(tlb.tlb_lo0),
-			 (tlb.tlb_lo0 & MIPS3_PG_D) ? 'D' : ' ',
-			 (tlb.tlb_lo0 & MIPS3_PG_G) ? 'G' : ' ',
-			 (tlb.tlb_lo0 >> 3) & 7);
-		kvm_info("Lo1=0x%09" PRIx64 " %c%c attr %lx sz=%lx\n",
-			 (uint64_t) mips3_tlbpfn_to_paddr(tlb.tlb_lo1),
-			 (tlb.tlb_lo1 & MIPS3_PG_D) ? 'D' : ' ',
-			 (tlb.tlb_lo1 & MIPS3_PG_G) ? 'G' : ' ',
-			 (tlb.tlb_lo1 >> 3) & 7, tlb.tlb_mask);
-	}
-}
-EXPORT_SYMBOL(kvm_mips_dump_guest_tlbs);
-
-static int kvm_mips_map_page(struct kvm *kvm, gfn_t gfn)
-{
-	int srcu_idx, err = 0;
-	pfn_t pfn;
-
-	if (kvm->arch.guest_pmap[gfn] != KVM_INVALID_PAGE)
-		return 0;
-
-	srcu_idx = srcu_read_lock(&kvm->srcu);
-	pfn = kvm_mips_gfn_to_pfn(kvm, gfn);
-
-	if (kvm_mips_is_error_pfn(pfn)) {
-		kvm_err("Couldn't get pfn for gfn %#" PRIx64 "!\n", gfn);
-		err = -EFAULT;
-		goto out;
-	}
-
-	kvm->arch.guest_pmap[gfn] = pfn;
-out:
-	srcu_read_unlock(&kvm->srcu, srcu_idx);
-	return err;
-}
-
-/* Translate guest KSEG0 addresses to Host PA */
-unsigned long kvm_mips_translate_guest_kseg0_to_hpa(struct kvm_vcpu *vcpu,
-						    unsigned long gva)
-{
-	gfn_t gfn;
-	uint32_t offset = gva & ~PAGE_MASK;
-	struct kvm *kvm = vcpu->kvm;
-
-	if (KVM_GUEST_KSEGX(gva) != KVM_GUEST_KSEG0) {
-		kvm_err("%s/%p: Invalid gva: %#lx\n", __func__,
-			__builtin_return_address(0), gva);
-		return KVM_INVALID_PAGE;
-	}
-
-	gfn = (KVM_GUEST_CPHYSADDR(gva) >> PAGE_SHIFT);
-
-	if (gfn >= kvm->arch.guest_pmap_npages) {
-		kvm_err("%s: Invalid gfn: %#llx, GVA: %#lx\n", __func__, gfn,
-			gva);
-		return KVM_INVALID_PAGE;
-	}
-
-	if (kvm_mips_map_page(vcpu->kvm, gfn) < 0)
-		return KVM_INVALID_ADDR;
-
-	return (kvm->arch.guest_pmap[gfn] << PAGE_SHIFT) + offset;
-}
-EXPORT_SYMBOL(kvm_mips_translate_guest_kseg0_to_hpa);
-
-/* XXXKYMA: Must be called with interrupts disabled */
-/* set flush_dcache_mask == 0 if no dcache flush required */
-int kvm_mips_host_tlb_write(struct kvm_vcpu *vcpu, unsigned long entryhi,
-			    unsigned long entrylo0, unsigned long entrylo1,
-			    int flush_dcache_mask)
-{
-	unsigned long flags;
-	unsigned long old_entryhi;
-	int idx;
-
-	local_irq_save(flags);
-
-	old_entryhi = read_c0_entryhi();
-	write_c0_entryhi(entryhi);
-	mtc0_tlbw_hazard();
-
-	tlb_probe();
-	tlb_probe_hazard();
-	idx = read_c0_index();
-
-	if (idx > current_cpu_data.tlbsize) {
-		kvm_err("%s: Invalid Index: %d\n", __func__, idx);
-		kvm_mips_dump_host_tlbs();
-		return -1;
-	}
-
-	write_c0_entrylo0(entrylo0);
-	write_c0_entrylo1(entrylo1);
-	mtc0_tlbw_hazard();
-
-	if (idx < 0)
-		tlb_write_random();
-	else
-		tlb_write_indexed();
-	tlbw_use_hazard();
-
-	kvm_debug("@ %#lx idx: %2d [entryhi(R): %#lx] entrylo0(R): 0x%08lx, entrylo1(R): 0x%08lx\n",
-		  vcpu->arch.pc, idx, read_c0_entryhi(),
-		  read_c0_entrylo0(), read_c0_entrylo1());
-
-	/* Flush D-cache */
-	if (flush_dcache_mask) {
-		if (entrylo0 & MIPS3_PG_V) {
-			++vcpu->stat.flush_dcache_exits;
-			flush_data_cache_page((entryhi & VPN2_MASK) &
-					      ~flush_dcache_mask);
-		}
-		if (entrylo1 & MIPS3_PG_V) {
-			++vcpu->stat.flush_dcache_exits;
-			flush_data_cache_page(((entryhi & VPN2_MASK) &
-					       ~flush_dcache_mask) |
-					      (0x1 << PAGE_SHIFT));
-		}
-	}
-
-	/* Restore old ASID */
-	write_c0_entryhi(old_entryhi);
-	mtc0_tlbw_hazard();
-	tlbw_use_hazard();
-	local_irq_restore(flags);
-	return 0;
-}
-
-/* XXXKYMA: Must be called with interrupts disabled */
-int kvm_mips_handle_kseg0_tlb_fault(unsigned long badvaddr,
-				    struct kvm_vcpu *vcpu)
-{
-	gfn_t gfn;
-	pfn_t pfn0, pfn1;
-	unsigned long vaddr = 0;
-	unsigned long entryhi = 0, entrylo0 = 0, entrylo1 = 0;
-	int even;
-	struct kvm *kvm = vcpu->kvm;
-	const int flush_dcache_mask = 0;
-
-	if (KVM_GUEST_KSEGX(badvaddr) != KVM_GUEST_KSEG0) {
-		kvm_err("%s: Invalid BadVaddr: %#lx\n", __func__, badvaddr);
-		kvm_mips_dump_host_tlbs();
-		return -1;
-	}
-
-	gfn = (KVM_GUEST_CPHYSADDR(badvaddr) >> PAGE_SHIFT);
-	if (gfn >= kvm->arch.guest_pmap_npages) {
-		kvm_err("%s: Invalid gfn: %#llx, BadVaddr: %#lx\n", __func__,
-			gfn, badvaddr);
-		kvm_mips_dump_host_tlbs();
-		return -1;
-	}
-	even = !(gfn & 0x1);
-	vaddr = badvaddr & (PAGE_MASK << 1);
-
-	if (kvm_mips_map_page(vcpu->kvm, gfn) < 0)
-		return -1;
-
-	if (kvm_mips_map_page(vcpu->kvm, gfn ^ 0x1) < 0)
-		return -1;
-
-	if (even) {
-		pfn0 = kvm->arch.guest_pmap[gfn];
-		pfn1 = kvm->arch.guest_pmap[gfn ^ 0x1];
-	} else {
-		pfn0 = kvm->arch.guest_pmap[gfn ^ 0x1];
-		pfn1 = kvm->arch.guest_pmap[gfn];
-	}
-
-	entryhi = (vaddr | kvm_mips_get_kernel_asid(vcpu));
-	entrylo0 = mips3_paddr_to_tlbpfn(pfn0 << PAGE_SHIFT) | (0x3 << 3) |
-		   (1 << 2) | (0x1 << 1);
-	entrylo1 = mips3_paddr_to_tlbpfn(pfn1 << PAGE_SHIFT) | (0x3 << 3) |
-		   (1 << 2) | (0x1 << 1);
-
-	return kvm_mips_host_tlb_write(vcpu, entryhi, entrylo0, entrylo1,
-				       flush_dcache_mask);
-}
-EXPORT_SYMBOL(kvm_mips_handle_kseg0_tlb_fault);
-
-int kvm_mips_handle_commpage_tlb_fault(unsigned long badvaddr,
-	struct kvm_vcpu *vcpu)
-{
-	pfn_t pfn0, pfn1;
-	unsigned long flags, old_entryhi = 0, vaddr = 0;
-	unsigned long entrylo0 = 0, entrylo1 = 0;
-
-	pfn0 = CPHYSADDR(vcpu->arch.kseg0_commpage) >> PAGE_SHIFT;
-	pfn1 = 0;
-	entrylo0 = mips3_paddr_to_tlbpfn(pfn0 << PAGE_SHIFT) | (0x3 << 3) |
-		   (1 << 2) | (0x1 << 1);
-	entrylo1 = 0;
-
-	local_irq_save(flags);
-
-	old_entryhi = read_c0_entryhi();
-	vaddr = badvaddr & (PAGE_MASK << 1);
-	write_c0_entryhi(vaddr | kvm_mips_get_kernel_asid(vcpu));
-	mtc0_tlbw_hazard();
-	write_c0_entrylo0(entrylo0);
-	mtc0_tlbw_hazard();
-	write_c0_entrylo1(entrylo1);
-	mtc0_tlbw_hazard();
-	write_c0_index(kvm_mips_get_commpage_asid(vcpu));
-	mtc0_tlbw_hazard();
-	tlb_write_indexed();
-	mtc0_tlbw_hazard();
-	tlbw_use_hazard();
-
-	kvm_debug("@ %#lx idx: %2d [entryhi(R): %#lx] entrylo0 (R): 0x%08lx, entrylo1(R): 0x%08lx\n",
-		  vcpu->arch.pc, read_c0_index(), read_c0_entryhi(),
-		  read_c0_entrylo0(), read_c0_entrylo1());
-
-	/* Restore old ASID */
-	write_c0_entryhi(old_entryhi);
-	mtc0_tlbw_hazard();
-	tlbw_use_hazard();
-	local_irq_restore(flags);
-
-	return 0;
-}
-EXPORT_SYMBOL(kvm_mips_handle_commpage_tlb_fault);
-
-int kvm_mips_handle_mapped_seg_tlb_fault(struct kvm_vcpu *vcpu,
-					 struct kvm_mips_tlb *tlb,
-					 unsigned long *hpa0,
-					 unsigned long *hpa1)
-{
-	unsigned long entryhi = 0, entrylo0 = 0, entrylo1 = 0;
-	struct kvm *kvm = vcpu->kvm;
-	pfn_t pfn0, pfn1;
-
-	if ((tlb->tlb_hi & VPN2_MASK) == 0) {
-		pfn0 = 0;
-		pfn1 = 0;
-	} else {
-		if (kvm_mips_map_page(kvm, mips3_tlbpfn_to_paddr(tlb->tlb_lo0)
-					   >> PAGE_SHIFT) < 0)
-			return -1;
-
-		if (kvm_mips_map_page(kvm, mips3_tlbpfn_to_paddr(tlb->tlb_lo1)
-					   >> PAGE_SHIFT) < 0)
-			return -1;
-
-		pfn0 = kvm->arch.guest_pmap[mips3_tlbpfn_to_paddr(tlb->tlb_lo0)
-					    >> PAGE_SHIFT];
-		pfn1 = kvm->arch.guest_pmap[mips3_tlbpfn_to_paddr(tlb->tlb_lo1)
-					    >> PAGE_SHIFT];
-	}
-
-	if (hpa0)
-		*hpa0 = pfn0 << PAGE_SHIFT;
-
-	if (hpa1)
-		*hpa1 = pfn1 << PAGE_SHIFT;
-
-	/* Get attributes from the Guest TLB */
-	entryhi = (tlb->tlb_hi & VPN2_MASK) | (KVM_GUEST_KERNEL_MODE(vcpu) ?
-					       kvm_mips_get_kernel_asid(vcpu) :
-					       kvm_mips_get_user_asid(vcpu));
-	entrylo0 = mips3_paddr_to_tlbpfn(pfn0 << PAGE_SHIFT) | (0x3 << 3) |
-		   (tlb->tlb_lo0 & MIPS3_PG_D) | (tlb->tlb_lo0 & MIPS3_PG_V);
-	entrylo1 = mips3_paddr_to_tlbpfn(pfn1 << PAGE_SHIFT) | (0x3 << 3) |
-		   (tlb->tlb_lo1 & MIPS3_PG_D) | (tlb->tlb_lo1 & MIPS3_PG_V);
-
-	kvm_debug("@ %#lx tlb_lo0: 0x%08lx tlb_lo1: 0x%08lx\n", vcpu->arch.pc,
-		  tlb->tlb_lo0, tlb->tlb_lo1);
-
-	return kvm_mips_host_tlb_write(vcpu, entryhi, entrylo0, entrylo1,
-				       tlb->tlb_mask);
-}
-EXPORT_SYMBOL(kvm_mips_handle_mapped_seg_tlb_fault);
-
-int kvm_mips_guest_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long entryhi)
-{
-	int i;
-	int index = -1;
-	struct kvm_mips_tlb *tlb = vcpu->arch.guest_tlb;
-
-	for (i = 0; i < KVM_MIPS_GUEST_TLB_SIZE; i++) {
-		if (TLB_HI_VPN2_HIT(tlb[i], entryhi) &&
-		    TLB_HI_ASID_HIT(tlb[i], entryhi)) {
-			index = i;
-			break;
-		}
-	}
-
-	kvm_debug("%s: entryhi: %#lx, index: %d lo0: %#lx, lo1: %#lx\n",
-		  __func__, entryhi, index, tlb[i].tlb_lo0, tlb[i].tlb_lo1);
-
-	return index;
-}
-EXPORT_SYMBOL(kvm_mips_guest_tlb_lookup);
-
-int kvm_mips_host_tlb_lookup(struct kvm_vcpu *vcpu, unsigned long vaddr)
-{
-	unsigned long old_entryhi, flags;
-	int idx;
-
-	local_irq_save(flags);
-
-	old_entryhi = read_c0_entryhi();
-
-	if (KVM_GUEST_KERNEL_MODE(vcpu))
-		write_c0_entryhi((vaddr & VPN2_MASK) |
-				 kvm_mips_get_kernel_asid(vcpu));
-	else {
-		write_c0_entryhi((vaddr & VPN2_MASK) |
-				 kvm_mips_get_user_asid(vcpu));
-	}
-
-	mtc0_tlbw_hazard();
-
-	tlb_probe();
-	tlb_probe_hazard();
-	idx = read_c0_index();
-
-	/* Restore old ASID */
-	write_c0_entryhi(old_entryhi);
-	mtc0_tlbw_hazard();
-	tlbw_use_hazard();
-
-	local_irq_restore(flags);
-
-	kvm_debug("Host TLB lookup, %#lx, idx: %2d\n", vaddr, idx);
-
-	return idx;
-}
-EXPORT_SYMBOL(kvm_mips_host_tlb_lookup);
-
-int kvm_mips_host_tlb_inv(struct kvm_vcpu *vcpu, unsigned long va)
-{
-	int idx;
-	unsigned long flags, old_entryhi;
-
-	local_irq_save(flags);
-
-	old_entryhi = read_c0_entryhi();
-
-	write_c0_entryhi((va & VPN2_MASK) | kvm_mips_get_user_asid(vcpu));
-	mtc0_tlbw_hazard();
-
-	tlb_probe();
-	tlb_probe_hazard();
-	idx = read_c0_index();
-
-	if (idx >= current_cpu_data.tlbsize)
-		BUG();
-
-	if (idx > 0) {
-		write_c0_entryhi(UNIQUE_ENTRYHI(idx));
-		mtc0_tlbw_hazard();
-
-		write_c0_entrylo0(0);
-		mtc0_tlbw_hazard();
-
-		write_c0_entrylo1(0);
-		mtc0_tlbw_hazard();
-
-		tlb_write_indexed();
-		mtc0_tlbw_hazard();
-	}
-
-	write_c0_entryhi(old_entryhi);
-	mtc0_tlbw_hazard();
-	tlbw_use_hazard();
-
-	local_irq_restore(flags);
-
-	if (idx > 0)
-		kvm_debug("%s: Invalidated entryhi %#lx @ idx %d\n", __func__,
-			  (va & VPN2_MASK) | kvm_mips_get_user_asid(vcpu), idx);
-
-	return 0;
-}
-EXPORT_SYMBOL(kvm_mips_host_tlb_inv);
-
-/* XXXKYMA: Fix Guest USER/KERNEL no longer share the same ASID */
-int kvm_mips_host_tlb_inv_index(struct kvm_vcpu *vcpu, int index)
-{
-	unsigned long flags, old_entryhi;
-
-	if (index >= current_cpu_data.tlbsize)
-		BUG();
-
-	local_irq_save(flags);
-
-	old_entryhi = read_c0_entryhi();
-
-	write_c0_entryhi(UNIQUE_ENTRYHI(index));
-	mtc0_tlbw_hazard();
-
-	write_c0_index(index);
-	mtc0_tlbw_hazard();
-
-	write_c0_entrylo0(0);
-	mtc0_tlbw_hazard();
-
-	write_c0_entrylo1(0);
-	mtc0_tlbw_hazard();
-
-	tlb_write_indexed();
-	mtc0_tlbw_hazard();
-	tlbw_use_hazard();
-
-	write_c0_entryhi(old_entryhi);
-	mtc0_tlbw_hazard();
-	tlbw_use_hazard();
-
-	local_irq_restore(flags);
-
-	return 0;
-}
-
-void kvm_mips_flush_host_tlb(int skip_kseg0)
-{
-	unsigned long flags;
-	unsigned long old_entryhi, entryhi;
-	unsigned long old_pagemask;
-	int entry = 0;
-	int maxentry = current_cpu_data.tlbsize;
-
-	local_irq_save(flags);
-
-	old_entryhi = read_c0_entryhi();
-	old_pagemask = read_c0_pagemask();
-
-	/* Blast 'em all away. */
-	for (entry = 0; entry < maxentry; entry++) {
-		write_c0_index(entry);
-		mtc0_tlbw_hazard();
-
-		if (skip_kseg0) {
-			tlb_read();
-			tlbw_use_hazard();
-
-			entryhi = read_c0_entryhi();
-
-			/* Don't blow away guest kernel entries */
-			if (KVM_GUEST_KSEGX(entryhi) == KVM_GUEST_KSEG0)
-				continue;
-		}
-
-		/* Make sure all entries differ. */
-		write_c0_entryhi(UNIQUE_ENTRYHI(entry));
-		mtc0_tlbw_hazard();
-		write_c0_entrylo0(0);
-		mtc0_tlbw_hazard();
-		write_c0_entrylo1(0);
-		mtc0_tlbw_hazard();
-
-		tlb_write_indexed();
-		mtc0_tlbw_hazard();
-	}
-
-	tlbw_use_hazard();
-
-	write_c0_entryhi(old_entryhi);
-	write_c0_pagemask(old_pagemask);
-	mtc0_tlbw_hazard();
-	tlbw_use_hazard();
-
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(kvm_mips_flush_host_tlb);
-
-void kvm_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu,
-			     struct kvm_vcpu *vcpu)
-{
-	unsigned long asid = asid_cache(cpu);
-
-	asid += ASID_INC;
-	if (!(asid & ASID_MASK)) {
-		if (cpu_has_vtag_icache)
-			flush_icache_all();
-
-		kvm_local_flush_tlb_all();      /* start new asid cycle */
-
-		if (!asid)      /* fix version if needed */
-			asid = ASID_FIRST_VERSION;
-	}
-
-	cpu_context(cpu, mm) = asid_cache(cpu) = asid;
-}
-
-void kvm_local_flush_tlb_all(void)
-{
-	unsigned long flags;
-	unsigned long old_ctx;
-	int entry = 0;
-
-	local_irq_save(flags);
-	/* Save old context and create impossible VPN2 value */
-	old_ctx = read_c0_entryhi();
-	write_c0_entrylo0(0);
-	write_c0_entrylo1(0);
-
-	/* Blast 'em all away. */
-	while (entry < current_cpu_data.tlbsize) {
-		/* Make sure all entries differ. */
-		write_c0_entryhi(UNIQUE_ENTRYHI(entry));
-		write_c0_index(entry);
-		mtc0_tlbw_hazard();
-		tlb_write_indexed();
-		entry++;
-	}
-	tlbw_use_hazard();
-	write_c0_entryhi(old_ctx);
-	mtc0_tlbw_hazard();
-
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(kvm_local_flush_tlb_all);
-
-/**
- * kvm_mips_migrate_count() - Migrate timer.
- * @vcpu:	Virtual CPU.
- *
- * Migrate CP0_Count hrtimer to the current CPU by cancelling and restarting it
- * if it was running prior to being cancelled.
- *
- * Must be called when the VCPU is migrated to a different CPU to ensure that
- * timer expiry during guest execution interrupts the guest and causes the
- * interrupt to be delivered in a timely manner.
- */
-static void kvm_mips_migrate_count(struct kvm_vcpu *vcpu)
-{
-	if (hrtimer_cancel(&vcpu->arch.comparecount_timer))
-		hrtimer_restart(&vcpu->arch.comparecount_timer);
-}
-
-/* Restore ASID once we are scheduled back after preemption */
-void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
-{
-	unsigned long flags;
-	int newasid = 0;
-
-	kvm_debug("%s: vcpu %p, cpu: %d\n", __func__, vcpu, cpu);
-
-	/* Alocate new kernel and user ASIDs if needed */
-
-	local_irq_save(flags);
-
-	if (((vcpu->arch.
-	      guest_kernel_asid[cpu] ^ asid_cache(cpu)) & ASID_VERSION_MASK)) {
-		kvm_get_new_mmu_context(&vcpu->arch.guest_kernel_mm, cpu, vcpu);
-		vcpu->arch.guest_kernel_asid[cpu] =
-		    vcpu->arch.guest_kernel_mm.context.asid[cpu];
-		kvm_get_new_mmu_context(&vcpu->arch.guest_user_mm, cpu, vcpu);
-		vcpu->arch.guest_user_asid[cpu] =
-		    vcpu->arch.guest_user_mm.context.asid[cpu];
-		newasid++;
-
-		kvm_debug("[%d]: cpu_context: %#lx\n", cpu,
-			  cpu_context(cpu, current->mm));
-		kvm_debug("[%d]: Allocated new ASID for Guest Kernel: %#x\n",
-			  cpu, vcpu->arch.guest_kernel_asid[cpu]);
-		kvm_debug("[%d]: Allocated new ASID for Guest User: %#x\n", cpu,
-			  vcpu->arch.guest_user_asid[cpu]);
-	}
-
-	if (vcpu->arch.last_sched_cpu != cpu) {
-		kvm_debug("[%d->%d]KVM VCPU[%d] switch\n",
-			  vcpu->arch.last_sched_cpu, cpu, vcpu->vcpu_id);
-		/*
-		 * Migrate the timer interrupt to the current CPU so that it
-		 * always interrupts the guest and synchronously triggers a
-		 * guest timer interrupt.
-		 */
-		kvm_mips_migrate_count(vcpu);
-	}
-
-	if (!newasid) {
-		/*
-		 * If we preempted while the guest was executing, then reload
-		 * the pre-empted ASID
-		 */
-		if (current->flags & PF_VCPU) {
-			write_c0_entryhi(vcpu->arch.
-					 preempt_entryhi & ASID_MASK);
-			ehb();
-		}
-	} else {
-		/* New ASIDs were allocated for the VM */
-
-		/*
-		 * Were we in guest context? If so then the pre-empted ASID is
-		 * no longer valid, we need to set it to what it should be based
-		 * on the mode of the Guest (Kernel/User)
-		 */
-		if (current->flags & PF_VCPU) {
-			if (KVM_GUEST_KERNEL_MODE(vcpu))
-				write_c0_entryhi(vcpu->arch.
-						 guest_kernel_asid[cpu] &
-						 ASID_MASK);
-			else
-				write_c0_entryhi(vcpu->arch.
-						 guest_user_asid[cpu] &
-						 ASID_MASK);
-			ehb();
-		}
-	}
-
-	local_irq_restore(flags);
-
-}
-EXPORT_SYMBOL(kvm_arch_vcpu_load);
-
-/* ASID can change if another task is scheduled during preemption */
-void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
-{
-	unsigned long flags;
-	uint32_t cpu;
-
-	local_irq_save(flags);
-
-	cpu = smp_processor_id();
-
-	vcpu->arch.preempt_entryhi = read_c0_entryhi();
-	vcpu->arch.last_sched_cpu = cpu;
-
-	if (((cpu_context(cpu, current->mm) ^ asid_cache(cpu)) &
-	     ASID_VERSION_MASK)) {
-		kvm_debug("%s: Dropping MMU Context:  %#lx\n", __func__,
-			  cpu_context(cpu, current->mm));
-		drop_mmu_context(current->mm, cpu);
-	}
-	write_c0_entryhi(cpu_asid(cpu, current->mm));
-	ehb();
-
-	local_irq_restore(flags);
-}
-EXPORT_SYMBOL(kvm_arch_vcpu_put);
-
-uint32_t kvm_get_inst(uint32_t *opc, struct kvm_vcpu *vcpu)
-{
-	struct mips_coproc *cop0 = vcpu->arch.cop0;
-	unsigned long paddr, flags, vpn2, asid;
-	uint32_t inst;
-	int index;
-
-	if (KVM_GUEST_KSEGX((unsigned long) opc) < KVM_GUEST_KSEG0 ||
-	    KVM_GUEST_KSEGX((unsigned long) opc) == KVM_GUEST_KSEG23) {
-		local_irq_save(flags);
-		index = kvm_mips_host_tlb_lookup(vcpu, (unsigned long) opc);
-		if (index >= 0) {
-			inst = *(opc);
-		} else {
-			vpn2 = (unsigned long) opc & VPN2_MASK;
-			asid = kvm_read_c0_guest_entryhi(cop0) & ASID_MASK;
-			index = kvm_mips_guest_tlb_lookup(vcpu, vpn2 | asid);
-			if (index < 0) {
-				kvm_err("%s: get_user_failed for %p, vcpu: %p, ASID: %#lx\n",
-					__func__, opc, vcpu, read_c0_entryhi());
-				kvm_mips_dump_host_tlbs();
-				local_irq_restore(flags);
-				return KVM_INVALID_INST;
-			}
-			kvm_mips_handle_mapped_seg_tlb_fault(vcpu,
-							     &vcpu->arch.
-							     guest_tlb[index],
-							     NULL, NULL);
-			inst = *(opc);
-		}
-		local_irq_restore(flags);
-	} else if (KVM_GUEST_KSEGX(opc) == KVM_GUEST_KSEG0) {
-		paddr =
-		    kvm_mips_translate_guest_kseg0_to_hpa(vcpu,
-							  (unsigned long) opc);
-		inst = *(uint32_t *) CKSEG0ADDR(paddr);
-	} else {
-		kvm_err("%s: illegal address: %p\n", __func__, opc);
-		return KVM_INVALID_INST;
-	}
-
-	return inst;
-}
-EXPORT_SYMBOL(kvm_get_inst);