Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 675 insertions, 0 deletions

diff --git a/kernel/arch/powerpc/kvm/book3s_64_mmu.c b/kernel/arch/powerpc/kvm/book3s_64_mmu.c
new file mode 100644
index 000000000..774a253ca
--- /dev/null
+++ b/kernel/arch/powerpc/kvm/book3s_64_mmu.c
@@ -0,0 +1,675 @@
+/*
+ * 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 SUSE Linux Products GmbH 2009
+ *
+ * Authors: Alexander Graf <agraf@suse.de>
+ */
+
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/kvm.h>
+#include <linux/kvm_host.h>
+#include <linux/highmem.h>
+
+#include <asm/tlbflush.h>
+#include <asm/kvm_ppc.h>
+#include <asm/kvm_book3s.h>
+#include <asm/mmu-hash64.h>
+
+/* #define DEBUG_MMU */
+
+#ifdef DEBUG_MMU
+#define dprintk(X...) printk(KERN_INFO X)
+#else
+#define dprintk(X...) do { } while(0)
+#endif
+
+static void kvmppc_mmu_book3s_64_reset_msr(struct kvm_vcpu *vcpu)
+{
+	kvmppc_set_msr(vcpu, vcpu->arch.intr_msr);
+}
+
+static struct kvmppc_slb *kvmppc_mmu_book3s_64_find_slbe(
+				struct kvm_vcpu *vcpu,
+				gva_t eaddr)
+{
+	int i;
+	u64 esid = GET_ESID(eaddr);
+	u64 esid_1t = GET_ESID_1T(eaddr);
+
+	for (i = 0; i < vcpu->arch.slb_nr; i++) {
+		u64 cmp_esid = esid;
+
+		if (!vcpu->arch.slb[i].valid)
+			continue;
+
+		if (vcpu->arch.slb[i].tb)
+			cmp_esid = esid_1t;
+
+		if (vcpu->arch.slb[i].esid == cmp_esid)
+			return &vcpu->arch.slb[i];
+	}
+
+	dprintk("KVM: No SLB entry found for 0x%lx [%llx | %llx]\n",
+		eaddr, esid, esid_1t);
+	for (i = 0; i < vcpu->arch.slb_nr; i++) {
+	    if (vcpu->arch.slb[i].vsid)
+		dprintk("  %d: %c%c%c %llx %llx\n", i,
+			vcpu->arch.slb[i].valid ? 'v' : ' ',
+			vcpu->arch.slb[i].large ? 'l' : ' ',
+			vcpu->arch.slb[i].tb    ? 't' : ' ',
+			vcpu->arch.slb[i].esid,
+			vcpu->arch.slb[i].vsid);
+	}
+
+	return NULL;
+}
+
+static int kvmppc_slb_sid_shift(struct kvmppc_slb *slbe)
+{
+	return slbe->tb ? SID_SHIFT_1T : SID_SHIFT;
+}
+
+static u64 kvmppc_slb_offset_mask(struct kvmppc_slb *slbe)
+{
+	return (1ul << kvmppc_slb_sid_shift(slbe)) - 1;
+}
+
+static u64 kvmppc_slb_calc_vpn(struct kvmppc_slb *slb, gva_t eaddr)
+{
+	eaddr &= kvmppc_slb_offset_mask(slb);
+
+	return (eaddr >> VPN_SHIFT) |
+		((slb->vsid) << (kvmppc_slb_sid_shift(slb) - VPN_SHIFT));
+}
+
+static u64 kvmppc_mmu_book3s_64_ea_to_vp(struct kvm_vcpu *vcpu, gva_t eaddr,
+					 bool data)
+{
+	struct kvmppc_slb *slb;
+
+	slb = kvmppc_mmu_book3s_64_find_slbe(vcpu, eaddr);
+	if (!slb)
+		return 0;
+
+	return kvmppc_slb_calc_vpn(slb, eaddr);
+}
+
+static int mmu_pagesize(int mmu_pg)
+{
+	switch (mmu_pg) {
+	case MMU_PAGE_64K:
+		return 16;
+	case MMU_PAGE_16M:
+		return 24;
+	}
+	return 12;
+}
+
+static int kvmppc_mmu_book3s_64_get_pagesize(struct kvmppc_slb *slbe)
+{
+	return mmu_pagesize(slbe->base_page_size);
+}
+
+static u32 kvmppc_mmu_book3s_64_get_page(struct kvmppc_slb *slbe, gva_t eaddr)
+{
+	int p = kvmppc_mmu_book3s_64_get_pagesize(slbe);
+
+	return ((eaddr & kvmppc_slb_offset_mask(slbe)) >> p);
+}
+
+static hva_t kvmppc_mmu_book3s_64_get_pteg(struct kvm_vcpu *vcpu,
+				struct kvmppc_slb *slbe, gva_t eaddr,
+				bool second)
+{
+	struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
+	u64 hash, pteg, htabsize;
+	u32 ssize;
+	hva_t r;
+	u64 vpn;
+
+	htabsize = ((1 << ((vcpu_book3s->sdr1 & 0x1f) + 11)) - 1);
+
+	vpn = kvmppc_slb_calc_vpn(slbe, eaddr);
+	ssize = slbe->tb ? MMU_SEGSIZE_1T : MMU_SEGSIZE_256M;
+	hash = hpt_hash(vpn, kvmppc_mmu_book3s_64_get_pagesize(slbe), ssize);
+	if (second)
+		hash = ~hash;
+	hash &= ((1ULL << 39ULL) - 1ULL);
+	hash &= htabsize;
+	hash <<= 7ULL;
+
+	pteg = vcpu_book3s->sdr1 & 0xfffffffffffc0000ULL;
+	pteg |= hash;
+
+	dprintk("MMU: page=0x%x sdr1=0x%llx pteg=0x%llx vsid=0x%llx\n",
+		page, vcpu_book3s->sdr1, pteg, slbe->vsid);
+
+	/* When running a PAPR guest, SDR1 contains a HVA address instead
+           of a GPA */
+	if (vcpu->arch.papr_enabled)
+		r = pteg;
+	else
+		r = gfn_to_hva(vcpu->kvm, pteg >> PAGE_SHIFT);
+
+	if (kvm_is_error_hva(r))
+		return r;
+	return r | (pteg & ~PAGE_MASK);
+}
+
+static u64 kvmppc_mmu_book3s_64_get_avpn(struct kvmppc_slb *slbe, gva_t eaddr)
+{
+	int p = kvmppc_mmu_book3s_64_get_pagesize(slbe);
+	u64 avpn;
+
+	avpn = kvmppc_mmu_book3s_64_get_page(slbe, eaddr);
+	avpn |= slbe->vsid << (kvmppc_slb_sid_shift(slbe) - p);
+
+	if (p < 16)
+		avpn >>= ((80 - p) - 56) - 8;	/* 16 - p */
+	else
+		avpn <<= p - 16;
+
+	return avpn;
+}
+
+/*
+ * Return page size encoded in the second word of a HPTE, or
+ * -1 for an invalid encoding for the base page size indicated by
+ * the SLB entry.  This doesn't handle mixed pagesize segments yet.
+ */
+static int decode_pagesize(struct kvmppc_slb *slbe, u64 r)
+{
+	switch (slbe->base_page_size) {
+	case MMU_PAGE_64K:
+		if ((r & 0xf000) == 0x1000)
+			return MMU_PAGE_64K;
+		break;
+	case MMU_PAGE_16M:
+		if ((r & 0xff000) == 0)
+			return MMU_PAGE_16M;
+		break;
+	}
+	return -1;
+}
+
+static int kvmppc_mmu_book3s_64_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
+				      struct kvmppc_pte *gpte, bool data,
+				      bool iswrite)
+{
+	struct kvmppc_slb *slbe;
+	hva_t ptegp;
+	u64 pteg[16];
+	u64 avpn = 0;
+	u64 v, r;
+	u64 v_val, v_mask;
+	u64 eaddr_mask;
+	int i;
+	u8 pp, key = 0;
+	bool found = false;
+	bool second = false;
+	int pgsize;
+	ulong mp_ea = vcpu->arch.magic_page_ea;
+
+	/* Magic page override */
+	if (unlikely(mp_ea) &&
+	    unlikely((eaddr & ~0xfffULL) == (mp_ea & ~0xfffULL)) &&
+	    !(kvmppc_get_msr(vcpu) & MSR_PR)) {
+		gpte->eaddr = eaddr;
+		gpte->vpage = kvmppc_mmu_book3s_64_ea_to_vp(vcpu, eaddr, data);
+		gpte->raddr = vcpu->arch.magic_page_pa | (gpte->raddr & 0xfff);
+		gpte->raddr &= KVM_PAM;
+		gpte->may_execute = true;
+		gpte->may_read = true;
+		gpte->may_write = true;
+		gpte->page_size = MMU_PAGE_4K;
+
+		return 0;
+	}
+
+	slbe = kvmppc_mmu_book3s_64_find_slbe(vcpu, eaddr);
+	if (!slbe)
+		goto no_seg_found;
+
+	avpn = kvmppc_mmu_book3s_64_get_avpn(slbe, eaddr);
+	v_val = avpn & HPTE_V_AVPN;
+
+	if (slbe->tb)
+		v_val |= SLB_VSID_B_1T;
+	if (slbe->large)
+		v_val |= HPTE_V_LARGE;
+	v_val |= HPTE_V_VALID;
+
+	v_mask = SLB_VSID_B | HPTE_V_AVPN | HPTE_V_LARGE | HPTE_V_VALID |
+		HPTE_V_SECONDARY;
+
+	pgsize = slbe->large ? MMU_PAGE_16M : MMU_PAGE_4K;
+
+	mutex_lock(&vcpu->kvm->arch.hpt_mutex);
+
+do_second:
+	ptegp = kvmppc_mmu_book3s_64_get_pteg(vcpu, slbe, eaddr, second);
+	if (kvm_is_error_hva(ptegp))
+		goto no_page_found;
+
+	if(copy_from_user(pteg, (void __user *)ptegp, sizeof(pteg))) {
+		printk(KERN_ERR "KVM can't copy data from 0x%lx!\n", ptegp);
+		goto no_page_found;
+	}
+
+	if ((kvmppc_get_msr(vcpu) & MSR_PR) && slbe->Kp)
+		key = 4;
+	else if (!(kvmppc_get_msr(vcpu) & MSR_PR) && slbe->Ks)
+		key = 4;
+
+	for (i=0; i<16; i+=2) {
+		u64 pte0 = be64_to_cpu(pteg[i]);
+		u64 pte1 = be64_to_cpu(pteg[i + 1]);
+
+		/* Check all relevant fields of 1st dword */
+		if ((pte0 & v_mask) == v_val) {
+			/* If large page bit is set, check pgsize encoding */
+			if (slbe->large &&
+			    (vcpu->arch.hflags & BOOK3S_HFLAG_MULTI_PGSIZE)) {
+				pgsize = decode_pagesize(slbe, pte1);
+				if (pgsize < 0)
+					continue;
+			}
+			found = true;
+			break;
+		}
+	}
+
+	if (!found) {
+		if (second)
+			goto no_page_found;
+		v_val |= HPTE_V_SECONDARY;
+		second = true;
+		goto do_second;
+	}
+
+	v = be64_to_cpu(pteg[i]);
+	r = be64_to_cpu(pteg[i+1]);
+	pp = (r & HPTE_R_PP) | key;
+	if (r & HPTE_R_PP0)
+		pp |= 8;
+
+	gpte->eaddr = eaddr;
+	gpte->vpage = kvmppc_mmu_book3s_64_ea_to_vp(vcpu, eaddr, data);
+
+	eaddr_mask = (1ull << mmu_pagesize(pgsize)) - 1;
+	gpte->raddr = (r & HPTE_R_RPN & ~eaddr_mask) | (eaddr & eaddr_mask);
+	gpte->page_size = pgsize;
+	gpte->may_execute = ((r & HPTE_R_N) ? false : true);
+	if (unlikely(vcpu->arch.disable_kernel_nx) &&
+	    !(kvmppc_get_msr(vcpu) & MSR_PR))
+		gpte->may_execute = true;
+	gpte->may_read = false;
+	gpte->may_write = false;
+
+	switch (pp) {
+	case 0:
+	case 1:
+	case 2:
+	case 6:
+		gpte->may_write = true;
+		/* fall through */
+	case 3:
+	case 5:
+	case 7:
+	case 10:
+		gpte->may_read = true;
+		break;
+	}
+
+	dprintk("KVM MMU: Translated 0x%lx [0x%llx] -> 0x%llx "
+		"-> 0x%lx\n",
+		eaddr, avpn, gpte->vpage, gpte->raddr);
+
+	/* Update PTE R and C bits, so the guest's swapper knows we used the
+	 * page */
+	if (gpte->may_read && !(r & HPTE_R_R)) {
+		/*
+		 * Set the accessed flag.
+		 * We have to write this back with a single byte write
+		 * because another vcpu may be accessing this on
+		 * non-PAPR platforms such as mac99, and this is
+		 * what real hardware does.
+		 */
+                char __user *addr = (char __user *) (ptegp + (i + 1) * sizeof(u64));
+		r |= HPTE_R_R;
+		put_user(r >> 8, addr + 6);
+	}
+	if (iswrite && gpte->may_write && !(r & HPTE_R_C)) {
+		/* Set the dirty flag */
+		/* Use a single byte write */
+                char __user *addr = (char __user *) (ptegp + (i + 1) * sizeof(u64));
+		r |= HPTE_R_C;
+		put_user(r, addr + 7);
+	}
+
+	mutex_unlock(&vcpu->kvm->arch.hpt_mutex);
+
+	if (!gpte->may_read || (iswrite && !gpte->may_write))
+		return -EPERM;
+	return 0;
+
+no_page_found:
+	mutex_unlock(&vcpu->kvm->arch.hpt_mutex);
+	return -ENOENT;
+
+no_seg_found:
+	dprintk("KVM MMU: Trigger segment fault\n");
+	return -EINVAL;
+}
+
+static void kvmppc_mmu_book3s_64_slbmte(struct kvm_vcpu *vcpu, u64 rs, u64 rb)
+{
+	struct kvmppc_vcpu_book3s *vcpu_book3s;
+	u64 esid, esid_1t;
+	int slb_nr;
+	struct kvmppc_slb *slbe;
+
+	dprintk("KVM MMU: slbmte(0x%llx, 0x%llx)\n", rs, rb);
+
+	vcpu_book3s = to_book3s(vcpu);
+
+	esid = GET_ESID(rb);
+	esid_1t = GET_ESID_1T(rb);
+	slb_nr = rb & 0xfff;
+
+	if (slb_nr > vcpu->arch.slb_nr)
+		return;
+
+	slbe = &vcpu->arch.slb[slb_nr];
+
+	slbe->large = (rs & SLB_VSID_L) ? 1 : 0;
+	slbe->tb    = (rs & SLB_VSID_B_1T) ? 1 : 0;
+	slbe->esid  = slbe->tb ? esid_1t : esid;
+	slbe->vsid  = (rs & ~SLB_VSID_B) >> (kvmppc_slb_sid_shift(slbe) - 16);
+	slbe->valid = (rb & SLB_ESID_V) ? 1 : 0;
+	slbe->Ks    = (rs & SLB_VSID_KS) ? 1 : 0;
+	slbe->Kp    = (rs & SLB_VSID_KP) ? 1 : 0;
+	slbe->nx    = (rs & SLB_VSID_N) ? 1 : 0;
+	slbe->class = (rs & SLB_VSID_C) ? 1 : 0;
+
+	slbe->base_page_size = MMU_PAGE_4K;
+	if (slbe->large) {
+		if (vcpu->arch.hflags & BOOK3S_HFLAG_MULTI_PGSIZE) {
+			switch (rs & SLB_VSID_LP) {
+			case SLB_VSID_LP_00:
+				slbe->base_page_size = MMU_PAGE_16M;
+				break;
+			case SLB_VSID_LP_01:
+				slbe->base_page_size = MMU_PAGE_64K;
+				break;
+			}
+		} else
+			slbe->base_page_size = MMU_PAGE_16M;
+	}
+
+	slbe->orige = rb & (ESID_MASK | SLB_ESID_V);
+	slbe->origv = rs;
+
+	/* Map the new segment */
+	kvmppc_mmu_map_segment(vcpu, esid << SID_SHIFT);
+}
+
+static u64 kvmppc_mmu_book3s_64_slbmfee(struct kvm_vcpu *vcpu, u64 slb_nr)
+{
+	struct kvmppc_slb *slbe;
+
+	if (slb_nr > vcpu->arch.slb_nr)
+		return 0;
+
+	slbe = &vcpu->arch.slb[slb_nr];
+
+	return slbe->orige;
+}
+
+static u64 kvmppc_mmu_book3s_64_slbmfev(struct kvm_vcpu *vcpu, u64 slb_nr)
+{
+	struct kvmppc_slb *slbe;
+
+	if (slb_nr > vcpu->arch.slb_nr)
+		return 0;
+
+	slbe = &vcpu->arch.slb[slb_nr];
+
+	return slbe->origv;
+}
+
+static void kvmppc_mmu_book3s_64_slbie(struct kvm_vcpu *vcpu, u64 ea)
+{
+	struct kvmppc_slb *slbe;
+	u64 seg_size;
+
+	dprintk("KVM MMU: slbie(0x%llx)\n", ea);
+
+	slbe = kvmppc_mmu_book3s_64_find_slbe(vcpu, ea);
+
+	if (!slbe)
+		return;
+
+	dprintk("KVM MMU: slbie(0x%llx, 0x%llx)\n", ea, slbe->esid);
+
+	slbe->valid = false;
+	slbe->orige = 0;
+	slbe->origv = 0;
+
+	seg_size = 1ull << kvmppc_slb_sid_shift(slbe);
+	kvmppc_mmu_flush_segment(vcpu, ea & ~(seg_size - 1), seg_size);
+}
+
+static void kvmppc_mmu_book3s_64_slbia(struct kvm_vcpu *vcpu)
+{
+	int i;
+
+	dprintk("KVM MMU: slbia()\n");
+
+	for (i = 1; i < vcpu->arch.slb_nr; i++) {
+		vcpu->arch.slb[i].valid = false;
+		vcpu->arch.slb[i].orige = 0;
+		vcpu->arch.slb[i].origv = 0;
+	}
+
+	if (kvmppc_get_msr(vcpu) & MSR_IR) {
+		kvmppc_mmu_flush_segments(vcpu);
+		kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu));
+	}
+}
+
+static void kvmppc_mmu_book3s_64_mtsrin(struct kvm_vcpu *vcpu, u32 srnum,
+					ulong value)
+{
+	u64 rb = 0, rs = 0;
+
+	/*
+	 * According to Book3 2.01 mtsrin is implemented as:
+	 *
+	 * The SLB entry specified by (RB)32:35 is loaded from register
+	 * RS, as follows.
+	 *
+	 * SLBE Bit	Source			SLB Field
+	 *
+	 * 0:31		0x0000_0000		ESID-0:31
+	 * 32:35	(RB)32:35		ESID-32:35
+	 * 36		0b1			V
+	 * 37:61	0x00_0000|| 0b0		VSID-0:24
+	 * 62:88	(RS)37:63		VSID-25:51
+	 * 89:91	(RS)33:35		Ks Kp N
+	 * 92		(RS)36			L ((RS)36 must be 0b0)
+	 * 93		0b0			C
+	 */
+
+	dprintk("KVM MMU: mtsrin(0x%x, 0x%lx)\n", srnum, value);
+
+	/* ESID = srnum */
+	rb |= (srnum & 0xf) << 28;
+	/* Set the valid bit */
+	rb |= 1 << 27;
+	/* Index = ESID */
+	rb |= srnum;
+
+	/* VSID = VSID */
+	rs |= (value & 0xfffffff) << 12;
+	/* flags = flags */
+	rs |= ((value >> 28) & 0x7) << 9;
+
+	kvmppc_mmu_book3s_64_slbmte(vcpu, rs, rb);
+}
+
+static void kvmppc_mmu_book3s_64_tlbie(struct kvm_vcpu *vcpu, ulong va,
+				       bool large)
+{
+	u64 mask = 0xFFFFFFFFFULL;
+	long i;
+	struct kvm_vcpu *v;
+
+	dprintk("KVM MMU: tlbie(0x%lx)\n", va);
+
+	/*
+	 * The tlbie instruction changed behaviour starting with
+	 * POWER6.  POWER6 and later don't have the large page flag
+	 * in the instruction but in the RB value, along with bits
+	 * indicating page and segment sizes.
+	 */
+	if (vcpu->arch.hflags & BOOK3S_HFLAG_NEW_TLBIE) {
+		/* POWER6 or later */
+		if (va & 1) {		/* L bit */
+			if ((va & 0xf000) == 0x1000)
+				mask = 0xFFFFFFFF0ULL;	/* 64k page */
+			else
+				mask = 0xFFFFFF000ULL;	/* 16M page */
+		}
+	} else {
+		/* older processors, e.g. PPC970 */
+		if (large)
+			mask = 0xFFFFFF000ULL;
+	}
+	/* flush this VA on all vcpus */
+	kvm_for_each_vcpu(i, v, vcpu->kvm)
+		kvmppc_mmu_pte_vflush(v, va >> 12, mask);
+}
+
+#ifdef CONFIG_PPC_64K_PAGES
+static int segment_contains_magic_page(struct kvm_vcpu *vcpu, ulong esid)
+{
+	ulong mp_ea = vcpu->arch.magic_page_ea;
+
+	return mp_ea && !(kvmppc_get_msr(vcpu) & MSR_PR) &&
+		(mp_ea >> SID_SHIFT) == esid;
+}
+#endif
+
+static int kvmppc_mmu_book3s_64_esid_to_vsid(struct kvm_vcpu *vcpu, ulong esid,
+					     u64 *vsid)
+{
+	ulong ea = esid << SID_SHIFT;
+	struct kvmppc_slb *slb;
+	u64 gvsid = esid;
+	ulong mp_ea = vcpu->arch.magic_page_ea;
+	int pagesize = MMU_PAGE_64K;
+	u64 msr = kvmppc_get_msr(vcpu);
+
+	if (msr & (MSR_DR|MSR_IR)) {
+		slb = kvmppc_mmu_book3s_64_find_slbe(vcpu, ea);
+		if (slb) {
+			gvsid = slb->vsid;
+			pagesize = slb->base_page_size;
+			if (slb->tb) {
+				gvsid <<= SID_SHIFT_1T - SID_SHIFT;
+				gvsid |= esid & ((1ul << (SID_SHIFT_1T - SID_SHIFT)) - 1);
+				gvsid |= VSID_1T;
+			}
+		}
+	}
+
+	switch (msr & (MSR_DR|MSR_IR)) {
+	case 0:
+		gvsid = VSID_REAL | esid;
+		break;
+	case MSR_IR:
+		gvsid |= VSID_REAL_IR;
+		break;
+	case MSR_DR:
+		gvsid |= VSID_REAL_DR;
+		break;
+	case MSR_DR|MSR_IR:
+		if (!slb)
+			goto no_slb;
+
+		break;
+	default:
+		BUG();
+		break;
+	}
+
+#ifdef CONFIG_PPC_64K_PAGES
+	/*
+	 * Mark this as a 64k segment if the host is using
+	 * 64k pages, the host MMU supports 64k pages and
+	 * the guest segment page size is >= 64k,
+	 * but not if this segment contains the magic page.
+	 */
+	if (pagesize >= MMU_PAGE_64K &&
+	    mmu_psize_defs[MMU_PAGE_64K].shift &&
+	    !segment_contains_magic_page(vcpu, esid))
+		gvsid |= VSID_64K;
+#endif
+
+	if (kvmppc_get_msr(vcpu) & MSR_PR)
+		gvsid |= VSID_PR;
+
+	*vsid = gvsid;
+	return 0;
+
+no_slb:
+	/* Catch magic page case */
+	if (unlikely(mp_ea) &&
+	    unlikely(esid == (mp_ea >> SID_SHIFT)) &&
+	    !(kvmppc_get_msr(vcpu) & MSR_PR)) {
+		*vsid = VSID_REAL | esid;
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static bool kvmppc_mmu_book3s_64_is_dcbz32(struct kvm_vcpu *vcpu)
+{
+	return (to_book3s(vcpu)->hid[5] & 0x80);
+}
+
+void kvmppc_mmu_book3s_64_init(struct kvm_vcpu *vcpu)
+{
+	struct kvmppc_mmu *mmu = &vcpu->arch.mmu;
+
+	mmu->mfsrin = NULL;
+	mmu->mtsrin = kvmppc_mmu_book3s_64_mtsrin;
+	mmu->slbmte = kvmppc_mmu_book3s_64_slbmte;
+	mmu->slbmfee = kvmppc_mmu_book3s_64_slbmfee;
+	mmu->slbmfev = kvmppc_mmu_book3s_64_slbmfev;
+	mmu->slbie = kvmppc_mmu_book3s_64_slbie;
+	mmu->slbia = kvmppc_mmu_book3s_64_slbia;
+	mmu->xlate = kvmppc_mmu_book3s_64_xlate;
+	mmu->reset_msr = kvmppc_mmu_book3s_64_reset_msr;
+	mmu->tlbie = kvmppc_mmu_book3s_64_tlbie;
+	mmu->esid_to_vsid = kvmppc_mmu_book3s_64_esid_to_vsid;
+	mmu->ea_to_vp = kvmppc_mmu_book3s_64_ea_to_vp;
+	mmu->is_dcbz32 = kvmppc_mmu_book3s_64_is_dcbz32;
+
+	vcpu->arch.hflags |= BOOK3S_HFLAG_SLB;
+}