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Diffstat (limited to 'arch/powerpc/kvm/booke_guest.c')
-rw-r--r--arch/powerpc/kvm/booke_guest.c605
1 files changed, 0 insertions, 605 deletions
diff --git a/arch/powerpc/kvm/booke_guest.c b/arch/powerpc/kvm/booke_guest.c
deleted file mode 100644
index 7b2591e26ba..00000000000
--- a/arch/powerpc/kvm/booke_guest.c
+++ /dev/null
@@ -1,605 +0,0 @@
-/*
- * 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 "44x_tlb.h"
-
-#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[] = {
- { "exits", VCPU_STAT(sum_exits) },
- { "mmio", VCPU_STAT(mmio_exits) },
- { "dcr", VCPU_STAT(dcr_exits) },
- { "sig", VCPU_STAT(signal_exits) },
- { "light", VCPU_STAT(light_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 }
-};
-
-static const u32 interrupt_msr_mask[16] = {
- [BOOKE_INTERRUPT_CRITICAL] = MSR_ME,
- [BOOKE_INTERRUPT_MACHINE_CHECK] = 0,
- [BOOKE_INTERRUPT_DATA_STORAGE] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_INST_STORAGE] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_EXTERNAL] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_ALIGNMENT] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_PROGRAM] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_FP_UNAVAIL] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_SYSCALL] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_AP_UNAVAIL] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_DECREMENTER] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_FIT] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_WATCHDOG] = MSR_ME,
- [BOOKE_INTERRUPT_DTLB_MISS] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_ITLB_MISS] = MSR_CE|MSR_ME|MSR_DE,
- [BOOKE_INTERRUPT_DEBUG] = MSR_ME,
-};
-
-const unsigned char exception_priority[] = {
- [BOOKE_INTERRUPT_DATA_STORAGE] = 0,
- [BOOKE_INTERRUPT_INST_STORAGE] = 1,
- [BOOKE_INTERRUPT_ALIGNMENT] = 2,
- [BOOKE_INTERRUPT_PROGRAM] = 3,
- [BOOKE_INTERRUPT_FP_UNAVAIL] = 4,
- [BOOKE_INTERRUPT_SYSCALL] = 5,
- [BOOKE_INTERRUPT_AP_UNAVAIL] = 6,
- [BOOKE_INTERRUPT_DTLB_MISS] = 7,
- [BOOKE_INTERRUPT_ITLB_MISS] = 8,
- [BOOKE_INTERRUPT_MACHINE_CHECK] = 9,
- [BOOKE_INTERRUPT_DEBUG] = 10,
- [BOOKE_INTERRUPT_CRITICAL] = 11,
- [BOOKE_INTERRUPT_WATCHDOG] = 12,
- [BOOKE_INTERRUPT_EXTERNAL] = 13,
- [BOOKE_INTERRUPT_FIT] = 14,
- [BOOKE_INTERRUPT_DECREMENTER] = 15,
-};
-
-const unsigned char priority_exception[] = {
- BOOKE_INTERRUPT_DATA_STORAGE,
- BOOKE_INTERRUPT_INST_STORAGE,
- BOOKE_INTERRUPT_ALIGNMENT,
- BOOKE_INTERRUPT_PROGRAM,
- BOOKE_INTERRUPT_FP_UNAVAIL,
- BOOKE_INTERRUPT_SYSCALL,
- BOOKE_INTERRUPT_AP_UNAVAIL,
- BOOKE_INTERRUPT_DTLB_MISS,
- BOOKE_INTERRUPT_ITLB_MISS,
- BOOKE_INTERRUPT_MACHINE_CHECK,
- BOOKE_INTERRUPT_DEBUG,
- BOOKE_INTERRUPT_CRITICAL,
- BOOKE_INTERRUPT_WATCHDOG,
- BOOKE_INTERRUPT_EXTERNAL,
- BOOKE_INTERRUPT_FIT,
- BOOKE_INTERRUPT_DECREMENTER,
-};
-
-
-void kvmppc_dump_tlbs(struct kvm_vcpu *vcpu)
-{
- struct tlbe *tlbe;
- int i;
-
- printk("vcpu %d TLB dump:\n", vcpu->vcpu_id);
- printk("| %2s | %3s | %8s | %8s | %8s |\n",
- "nr", "tid", "word0", "word1", "word2");
-
- for (i = 0; i < PPC44x_TLB_SIZE; i++) {
- tlbe = &vcpu->arch.guest_tlb[i];
- if (tlbe->word0 & PPC44x_TLB_VALID)
- printk(" G%2d | %02X | %08X | %08X | %08X |\n",
- i, tlbe->tid, tlbe->word0, tlbe->word1,
- tlbe->word2);
- }
-
- for (i = 0; i < PPC44x_TLB_SIZE; i++) {
- tlbe = &vcpu->arch.shadow_tlb[i];
- if (tlbe->word0 & PPC44x_TLB_VALID)
- printk(" S%2d | %02X | %08X | %08X | %08X |\n",
- i, tlbe->tid, tlbe->word0, tlbe->word1,
- tlbe->word2);
- }
-}
-
-/* TODO: use vcpu_printf() */
-void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
-{
- int i;
-
- printk("pc: %08x msr: %08x\n", vcpu->arch.pc, vcpu->arch.msr);
- printk("lr: %08x ctr: %08x\n", vcpu->arch.lr, vcpu->arch.ctr);
- printk("srr0: %08x srr1: %08x\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: %08x %08x %08x %08x\n", i,
- vcpu->arch.gpr[i],
- vcpu->arch.gpr[i+1],
- vcpu->arch.gpr[i+2],
- vcpu->arch.gpr[i+3]);
- }
-}
-
-/* Check if we are ready to deliver the interrupt */
-static int kvmppc_can_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
-{
- int r;
-
- switch (interrupt) {
- case BOOKE_INTERRUPT_CRITICAL:
- r = vcpu->arch.msr & MSR_CE;
- break;
- case BOOKE_INTERRUPT_MACHINE_CHECK:
- r = vcpu->arch.msr & MSR_ME;
- break;
- case BOOKE_INTERRUPT_EXTERNAL:
- r = vcpu->arch.msr & MSR_EE;
- break;
- case BOOKE_INTERRUPT_DECREMENTER:
- r = vcpu->arch.msr & MSR_EE;
- break;
- case BOOKE_INTERRUPT_FIT:
- r = vcpu->arch.msr & MSR_EE;
- break;
- case BOOKE_INTERRUPT_WATCHDOG:
- r = vcpu->arch.msr & MSR_CE;
- break;
- case BOOKE_INTERRUPT_DEBUG:
- r = vcpu->arch.msr & MSR_DE;
- break;
- default:
- r = 1;
- }
-
- return r;
-}
-
-static void kvmppc_deliver_interrupt(struct kvm_vcpu *vcpu, int interrupt)
-{
- switch (interrupt) {
- case BOOKE_INTERRUPT_DECREMENTER:
- vcpu->arch.tsr |= TSR_DIS;
- break;
- }
-
- vcpu->arch.srr0 = vcpu->arch.pc;
- vcpu->arch.srr1 = vcpu->arch.msr;
- vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[interrupt];
- kvmppc_set_msr(vcpu, vcpu->arch.msr & interrupt_msr_mask[interrupt]);
-}
-
-/* Check pending exceptions and deliver one, if possible. */
-void kvmppc_check_and_deliver_interrupts(struct kvm_vcpu *vcpu)
-{
- unsigned long *pending = &vcpu->arch.pending_exceptions;
- unsigned int exception;
- unsigned int priority;
-
- priority = find_first_bit(pending, BITS_PER_BYTE * sizeof(*pending));
- while (priority <= BOOKE_MAX_INTERRUPT) {
- exception = priority_exception[priority];
- if (kvmppc_can_deliver_interrupt(vcpu, exception)) {
- kvmppc_clear_exception(vcpu, exception);
- kvmppc_deliver_interrupt(vcpu, exception);
- 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;
-
- 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:
- 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. */
-
- /* XXX At this point the TLB still holds our shadow TLB, so if
- * we do reschedule the host will fault over it. Perhaps we
- * should politely restore the host's entries to minimize
- * misses before ceding control. */
- if (need_resched())
- cond_resched();
- if (exit_nr == BOOKE_INTERRUPT_DECREMENTER)
- vcpu->stat.dec_exits++;
- else
- vcpu->stat.ext_intr_exits++;
- 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_queue_exception(vcpu, BOOKE_INTERRUPT_PROGRAM);
- r = RESUME_GUEST;
- break;
- }
-
- er = kvmppc_emulate_instruction(run, vcpu);
- switch (er) {
- case EMULATE_DONE:
- /* Future optimization: only reload non-volatiles if
- * they were actually modified by emulation. */
- vcpu->stat.emulated_inst_exits++;
- 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 %x 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_queue_exception(vcpu, exit_nr);
- r = RESUME_GUEST;
- break;
-
- case BOOKE_INTERRUPT_DATA_STORAGE:
- vcpu->arch.dear = vcpu->arch.fault_dear;
- vcpu->arch.esr = vcpu->arch.fault_esr;
- kvmppc_queue_exception(vcpu, exit_nr);
- vcpu->stat.dsi_exits++;
- r = RESUME_GUEST;
- break;
-
- case BOOKE_INTERRUPT_INST_STORAGE:
- vcpu->arch.esr = vcpu->arch.fault_esr;
- kvmppc_queue_exception(vcpu, exit_nr);
- vcpu->stat.isi_exits++;
- r = RESUME_GUEST;
- break;
-
- case BOOKE_INTERRUPT_SYSCALL:
- kvmppc_queue_exception(vcpu, exit_nr);
- vcpu->stat.syscall_exits++;
- r = RESUME_GUEST;
- break;
-
- case BOOKE_INTERRUPT_DTLB_MISS: {
- struct tlbe *gtlbe;
- unsigned long eaddr = vcpu->arch.fault_dear;
- gfn_t gfn;
-
- /* Check the guest TLB. */
- gtlbe = kvmppc_44x_dtlb_search(vcpu, eaddr);
- if (!gtlbe) {
- /* The guest didn't have a mapping for it. */
- kvmppc_queue_exception(vcpu, exit_nr);
- vcpu->arch.dear = vcpu->arch.fault_dear;
- vcpu->arch.esr = vcpu->arch.fault_esr;
- vcpu->stat.dtlb_real_miss_exits++;
- r = RESUME_GUEST;
- break;
- }
-
- vcpu->arch.paddr_accessed = tlb_xlate(gtlbe, eaddr);
- gfn = vcpu->arch.paddr_accessed >> 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, gfn, gtlbe->tid,
- gtlbe->word2);
- vcpu->stat.dtlb_virt_miss_exits++;
- r = RESUME_GUEST;
- } else {
- /* Guest has mapped and accessed a page which is not
- * actually RAM. */
- r = kvmppc_emulate_mmio(run, vcpu);
- }
-
- break;
- }
-
- case BOOKE_INTERRUPT_ITLB_MISS: {
- struct tlbe *gtlbe;
- unsigned long eaddr = vcpu->arch.pc;
- gfn_t gfn;
-
- r = RESUME_GUEST;
-
- /* Check the guest TLB. */
- gtlbe = kvmppc_44x_itlb_search(vcpu, eaddr);
- if (!gtlbe) {
- /* The guest didn't have a mapping for it. */
- kvmppc_queue_exception(vcpu, exit_nr);
- vcpu->stat.itlb_real_miss_exits++;
- break;
- }
-
- vcpu->stat.itlb_virt_miss_exits++;
-
- gfn = tlb_xlate(gtlbe, eaddr) >> 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, gfn, gtlbe->tid,
- gtlbe->word2);
- } else {
- /* Guest mapped and leaped at non-RAM! */
- kvmppc_queue_exception(vcpu,
- BOOKE_INTERRUPT_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;
- r = RESUME_HOST;
- break;
- }
-
- default:
- printk(KERN_EMERG "exit_nr %d\n", exit_nr);
- BUG();
- }
-
- local_irq_disable();
-
- kvmppc_check_and_deliver_interrupts(vcpu);
-
- /* Do some exit accounting. */
- vcpu->stat.sum_exits++;
- 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);
-
- vcpu->stat.signal_exits++;
- } else {
- vcpu->stat.light_exits++;
- }
- } else {
- switch (run->exit_reason) {
- case KVM_EXIT_MMIO:
- vcpu->stat.mmio_exits++;
- break;
- case KVM_EXIT_DCR:
- vcpu->stat.dcr_exits++;
- break;
- case KVM_EXIT_INTR:
- vcpu->stat.signal_exits++;
- break;
- }
- }
-
- return r;
-}
-
-/* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
-int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
-{
- struct tlbe *tlbe = &vcpu->arch.guest_tlb[0];
-
- tlbe->tid = 0;
- tlbe->word0 = PPC44x_TLB_16M | PPC44x_TLB_VALID;
- tlbe->word1 = 0;
- tlbe->word2 = PPC44x_TLB_SX | PPC44x_TLB_SW | PPC44x_TLB_SR;
-
- tlbe++;
- tlbe->tid = 0;
- tlbe->word0 = 0xef600000 | PPC44x_TLB_4K | PPC44x_TLB_VALID;
- tlbe->word1 = 0xef600000;
- tlbe->word2 = PPC44x_TLB_SX | PPC44x_TLB_SW | PPC44x_TLB_SR
- | PPC44x_TLB_I | PPC44x_TLB_G;
-
- 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;
-
- /* Since the guest can directly access the timebase, it must know the
- * real timebase frequency. Accordingly, it must see the state of
- * CCR1[TCS]. */
- vcpu->arch.ccr1 = mfspr(SPRN_CCR1);
-
- return 0;
-}
-
-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;
- vcpu->arch.msr = 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;
-}
-
-/* 'linear_address' is actually an encoding of AS|PID|EADDR . */
-int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
- struct kvm_translation *tr)
-{
- struct tlbe *gtlbe;
- int index;
- gva_t eaddr;
- u8 pid;
- u8 as;
-
- eaddr = tr->linear_address;
- pid = (tr->linear_address >> 32) & 0xff;
- as = (tr->linear_address >> 40) & 0x1;
-
- index = kvmppc_44x_tlb_index(vcpu, eaddr, pid, as);
- if (index == -1) {
- tr->valid = 0;
- return 0;
- }
-
- gtlbe = &vcpu->arch.guest_tlb[index];
-
- tr->physical_address = tlb_xlate(gtlbe, eaddr);
- /* XXX what does "writeable" and "usermode" even mean? */
- tr->valid = 1;
-
- return 0;
-}