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-rw-r--r--arch/powerpc/kvm/book3s_64_mmu.c683
1 files changed, 683 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/book3s_64_mmu.c b/arch/powerpc/kvm/book3s_64_mmu.c
new file mode 100644
index 000000000..c92dd25be
--- /dev/null
+++ b/arch/powerpc/kvm/book3s_64_mmu.c
@@ -0,0 +1,683 @@
+/*
+ * 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/kvm_ppc.h>
+#include <asm/kvm_book3s.h>
+#include <asm/book3s/64/mmu-hash.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)
+{
+ unsigned long msr = vcpu->arch.intr_msr;
+ unsigned long cur_msr = kvmppc_get_msr(vcpu);
+
+ /* If transactional, change to suspend mode on IRQ delivery */
+ if (MSR_TM_TRANSACTIONAL(cur_msr))
+ msr |= MSR_TS_S;
+ else
+ msr |= cur_msr & MSR_TS_MASK;
+
+ kvmppc_set_msr(vcpu, 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;
+ gpte->wimg = HPTE_R_M;
+
+ 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_ratelimited(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;
+ gpte->wimg = r & HPTE_R_WIMG;
+
+ 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)
+{
+ u64 esid, esid_1t;
+ int slb_nr;
+ struct kvmppc_slb *slbe;
+
+ dprintk("KVM MMU: slbmte(0x%llx, 0x%llx)\n", rs, rb);
+
+ 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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 16:22:27 +0000