mirror of https://gitee.com/openkylin/linux.git
887 lines
19 KiB
C
887 lines
19 KiB
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/vmalloc.h>
|
|
#include <linux/hrtimer.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/slab.h>
|
|
#include <asm/cputable.h>
|
|
#include <asm/uaccess.h>
|
|
#include <asm/kvm_ppc.h>
|
|
#include <asm/tlbflush.h>
|
|
#include <asm/cputhreads.h>
|
|
#include "timing.h"
|
|
#include "../mm/mmu_decl.h"
|
|
|
|
#define CREATE_TRACE_POINTS
|
|
#include "trace.h"
|
|
|
|
int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
|
|
{
|
|
return !(v->arch.shared->msr & MSR_WE) ||
|
|
!!(v->arch.pending_exceptions) ||
|
|
v->requests;
|
|
}
|
|
|
|
int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
|
|
{
|
|
int nr = kvmppc_get_gpr(vcpu, 11);
|
|
int r;
|
|
unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3);
|
|
unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4);
|
|
unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5);
|
|
unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6);
|
|
unsigned long r2 = 0;
|
|
|
|
if (!(vcpu->arch.shared->msr & MSR_SF)) {
|
|
/* 32 bit mode */
|
|
param1 &= 0xffffffff;
|
|
param2 &= 0xffffffff;
|
|
param3 &= 0xffffffff;
|
|
param4 &= 0xffffffff;
|
|
}
|
|
|
|
switch (nr) {
|
|
case HC_VENDOR_KVM | KVM_HC_PPC_MAP_MAGIC_PAGE:
|
|
{
|
|
vcpu->arch.magic_page_pa = param1;
|
|
vcpu->arch.magic_page_ea = param2;
|
|
|
|
r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7;
|
|
|
|
r = HC_EV_SUCCESS;
|
|
break;
|
|
}
|
|
case HC_VENDOR_KVM | KVM_HC_FEATURES:
|
|
r = HC_EV_SUCCESS;
|
|
#if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2)
|
|
/* XXX Missing magic page on 44x */
|
|
r2 |= (1 << KVM_FEATURE_MAGIC_PAGE);
|
|
#endif
|
|
|
|
/* Second return value is in r4 */
|
|
break;
|
|
default:
|
|
r = HC_EV_UNIMPLEMENTED;
|
|
break;
|
|
}
|
|
|
|
kvmppc_set_gpr(vcpu, 4, r2);
|
|
|
|
return r;
|
|
}
|
|
|
|
int kvmppc_sanity_check(struct kvm_vcpu *vcpu)
|
|
{
|
|
int r = false;
|
|
|
|
/* We have to know what CPU to virtualize */
|
|
if (!vcpu->arch.pvr)
|
|
goto out;
|
|
|
|
/* PAPR only works with book3s_64 */
|
|
if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled)
|
|
goto out;
|
|
|
|
#ifdef CONFIG_KVM_BOOK3S_64_HV
|
|
/* HV KVM can only do PAPR mode for now */
|
|
if (!vcpu->arch.papr_enabled)
|
|
goto out;
|
|
#endif
|
|
|
|
#ifdef CONFIG_KVM_BOOKE_HV
|
|
if (!cpu_has_feature(CPU_FTR_EMB_HV))
|
|
goto out;
|
|
#endif
|
|
|
|
r = true;
|
|
|
|
out:
|
|
vcpu->arch.sane = r;
|
|
return r ? 0 : -EINVAL;
|
|
}
|
|
|
|
int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
|
|
{
|
|
enum emulation_result er;
|
|
int r;
|
|
|
|
er = kvmppc_emulate_instruction(run, vcpu);
|
|
switch (er) {
|
|
case EMULATE_DONE:
|
|
/* Future optimization: only reload non-volatiles if they were
|
|
* actually modified. */
|
|
r = RESUME_GUEST_NV;
|
|
break;
|
|
case EMULATE_DO_MMIO:
|
|
run->exit_reason = KVM_EXIT_MMIO;
|
|
/* We must reload nonvolatiles because "update" load/store
|
|
* instructions modify register state. */
|
|
/* Future optimization: only reload non-volatiles if they were
|
|
* actually modified. */
|
|
r = RESUME_HOST_NV;
|
|
break;
|
|
case EMULATE_FAIL:
|
|
/* XXX Deliver Program interrupt to guest. */
|
|
printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
|
|
kvmppc_get_last_inst(vcpu));
|
|
r = RESUME_HOST;
|
|
break;
|
|
default:
|
|
BUG();
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int kvm_arch_hardware_enable(void *garbage)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void kvm_arch_hardware_disable(void *garbage)
|
|
{
|
|
}
|
|
|
|
int kvm_arch_hardware_setup(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void kvm_arch_hardware_unsetup(void)
|
|
{
|
|
}
|
|
|
|
void kvm_arch_check_processor_compat(void *rtn)
|
|
{
|
|
*(int *)rtn = kvmppc_core_check_processor_compat();
|
|
}
|
|
|
|
int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
|
|
{
|
|
if (type)
|
|
return -EINVAL;
|
|
|
|
return kvmppc_core_init_vm(kvm);
|
|
}
|
|
|
|
void kvm_arch_destroy_vm(struct kvm *kvm)
|
|
{
|
|
unsigned int i;
|
|
struct kvm_vcpu *vcpu;
|
|
|
|
kvm_for_each_vcpu(i, vcpu, kvm)
|
|
kvm_arch_vcpu_free(vcpu);
|
|
|
|
mutex_lock(&kvm->lock);
|
|
for (i = 0; i < atomic_read(&kvm->online_vcpus); i++)
|
|
kvm->vcpus[i] = NULL;
|
|
|
|
atomic_set(&kvm->online_vcpus, 0);
|
|
|
|
kvmppc_core_destroy_vm(kvm);
|
|
|
|
mutex_unlock(&kvm->lock);
|
|
}
|
|
|
|
void kvm_arch_sync_events(struct kvm *kvm)
|
|
{
|
|
}
|
|
|
|
int kvm_dev_ioctl_check_extension(long ext)
|
|
{
|
|
int r;
|
|
|
|
switch (ext) {
|
|
#ifdef CONFIG_BOOKE
|
|
case KVM_CAP_PPC_BOOKE_SREGS:
|
|
#else
|
|
case KVM_CAP_PPC_SEGSTATE:
|
|
case KVM_CAP_PPC_HIOR:
|
|
case KVM_CAP_PPC_PAPR:
|
|
#endif
|
|
case KVM_CAP_PPC_UNSET_IRQ:
|
|
case KVM_CAP_PPC_IRQ_LEVEL:
|
|
case KVM_CAP_ENABLE_CAP:
|
|
case KVM_CAP_ONE_REG:
|
|
r = 1;
|
|
break;
|
|
#ifndef CONFIG_KVM_BOOK3S_64_HV
|
|
case KVM_CAP_PPC_PAIRED_SINGLES:
|
|
case KVM_CAP_PPC_OSI:
|
|
case KVM_CAP_PPC_GET_PVINFO:
|
|
#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
|
|
case KVM_CAP_SW_TLB:
|
|
#endif
|
|
r = 1;
|
|
break;
|
|
case KVM_CAP_COALESCED_MMIO:
|
|
r = KVM_COALESCED_MMIO_PAGE_OFFSET;
|
|
break;
|
|
#endif
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case KVM_CAP_SPAPR_TCE:
|
|
case KVM_CAP_PPC_ALLOC_HTAB:
|
|
r = 1;
|
|
break;
|
|
#endif /* CONFIG_PPC_BOOK3S_64 */
|
|
#ifdef CONFIG_KVM_BOOK3S_64_HV
|
|
case KVM_CAP_PPC_SMT:
|
|
r = threads_per_core;
|
|
break;
|
|
case KVM_CAP_PPC_RMA:
|
|
r = 1;
|
|
/* PPC970 requires an RMA */
|
|
if (cpu_has_feature(CPU_FTR_ARCH_201))
|
|
r = 2;
|
|
break;
|
|
case KVM_CAP_SYNC_MMU:
|
|
r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0;
|
|
break;
|
|
#endif
|
|
case KVM_CAP_NR_VCPUS:
|
|
/*
|
|
* Recommending a number of CPUs is somewhat arbitrary; we
|
|
* return the number of present CPUs for -HV (since a host
|
|
* will have secondary threads "offline"), and for other KVM
|
|
* implementations just count online CPUs.
|
|
*/
|
|
#ifdef CONFIG_KVM_BOOK3S_64_HV
|
|
r = num_present_cpus();
|
|
#else
|
|
r = num_online_cpus();
|
|
#endif
|
|
break;
|
|
case KVM_CAP_MAX_VCPUS:
|
|
r = KVM_MAX_VCPUS;
|
|
break;
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case KVM_CAP_PPC_GET_SMMU_INFO:
|
|
r = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
r = 0;
|
|
break;
|
|
}
|
|
return r;
|
|
|
|
}
|
|
|
|
long kvm_arch_dev_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
void kvm_arch_free_memslot(struct kvm_memory_slot *free,
|
|
struct kvm_memory_slot *dont)
|
|
{
|
|
}
|
|
|
|
int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
int kvm_arch_prepare_memory_region(struct kvm *kvm,
|
|
struct kvm_memory_slot *memslot,
|
|
struct kvm_memory_slot old,
|
|
struct kvm_userspace_memory_region *mem,
|
|
int user_alloc)
|
|
{
|
|
return kvmppc_core_prepare_memory_region(kvm, mem);
|
|
}
|
|
|
|
void kvm_arch_commit_memory_region(struct kvm *kvm,
|
|
struct kvm_userspace_memory_region *mem,
|
|
struct kvm_memory_slot old,
|
|
int user_alloc)
|
|
{
|
|
kvmppc_core_commit_memory_region(kvm, mem);
|
|
}
|
|
|
|
|
|
void kvm_arch_flush_shadow(struct kvm *kvm)
|
|
{
|
|
}
|
|
|
|
struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
|
|
{
|
|
struct kvm_vcpu *vcpu;
|
|
vcpu = kvmppc_core_vcpu_create(kvm, id);
|
|
if (!IS_ERR(vcpu)) {
|
|
vcpu->arch.wqp = &vcpu->wq;
|
|
kvmppc_create_vcpu_debugfs(vcpu, id);
|
|
}
|
|
return vcpu;
|
|
}
|
|
|
|
void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
|
|
{
|
|
/* Make sure we're not using the vcpu anymore */
|
|
hrtimer_cancel(&vcpu->arch.dec_timer);
|
|
tasklet_kill(&vcpu->arch.tasklet);
|
|
|
|
kvmppc_remove_vcpu_debugfs(vcpu);
|
|
kvmppc_core_vcpu_free(vcpu);
|
|
}
|
|
|
|
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu)
|
|
{
|
|
kvm_arch_vcpu_free(vcpu);
|
|
}
|
|
|
|
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
|
|
{
|
|
return kvmppc_core_pending_dec(vcpu);
|
|
}
|
|
|
|
/*
|
|
* low level hrtimer wake routine. Because this runs in hardirq context
|
|
* we schedule a tasklet to do the real work.
|
|
*/
|
|
enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer)
|
|
{
|
|
struct kvm_vcpu *vcpu;
|
|
|
|
vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer);
|
|
tasklet_schedule(&vcpu->arch.tasklet);
|
|
|
|
return HRTIMER_NORESTART;
|
|
}
|
|
|
|
int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
|
|
{
|
|
hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS);
|
|
tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu);
|
|
vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup;
|
|
vcpu->arch.dec_expires = ~(u64)0;
|
|
|
|
#ifdef CONFIG_KVM_EXIT_TIMING
|
|
mutex_init(&vcpu->arch.exit_timing_lock);
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu)
|
|
{
|
|
kvmppc_mmu_destroy(vcpu);
|
|
}
|
|
|
|
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
|
|
{
|
|
#ifdef CONFIG_BOOKE
|
|
/*
|
|
* vrsave (formerly usprg0) isn't used by Linux, but may
|
|
* be used by the guest.
|
|
*
|
|
* On non-booke this is associated with Altivec and
|
|
* is handled by code in book3s.c.
|
|
*/
|
|
mtspr(SPRN_VRSAVE, vcpu->arch.vrsave);
|
|
#endif
|
|
kvmppc_core_vcpu_load(vcpu, cpu);
|
|
vcpu->cpu = smp_processor_id();
|
|
}
|
|
|
|
void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
|
|
{
|
|
kvmppc_core_vcpu_put(vcpu);
|
|
#ifdef CONFIG_BOOKE
|
|
vcpu->arch.vrsave = mfspr(SPRN_VRSAVE);
|
|
#endif
|
|
vcpu->cpu = -1;
|
|
}
|
|
|
|
int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
|
|
struct kvm_guest_debug *dbg)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
|
|
struct kvm_run *run)
|
|
{
|
|
kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data);
|
|
}
|
|
|
|
static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
|
|
struct kvm_run *run)
|
|
{
|
|
u64 uninitialized_var(gpr);
|
|
|
|
if (run->mmio.len > sizeof(gpr)) {
|
|
printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
|
|
return;
|
|
}
|
|
|
|
if (vcpu->arch.mmio_is_bigendian) {
|
|
switch (run->mmio.len) {
|
|
case 8: gpr = *(u64 *)run->mmio.data; break;
|
|
case 4: gpr = *(u32 *)run->mmio.data; break;
|
|
case 2: gpr = *(u16 *)run->mmio.data; break;
|
|
case 1: gpr = *(u8 *)run->mmio.data; break;
|
|
}
|
|
} else {
|
|
/* Convert BE data from userland back to LE. */
|
|
switch (run->mmio.len) {
|
|
case 4: gpr = ld_le32((u32 *)run->mmio.data); break;
|
|
case 2: gpr = ld_le16((u16 *)run->mmio.data); break;
|
|
case 1: gpr = *(u8 *)run->mmio.data; break;
|
|
}
|
|
}
|
|
|
|
if (vcpu->arch.mmio_sign_extend) {
|
|
switch (run->mmio.len) {
|
|
#ifdef CONFIG_PPC64
|
|
case 4:
|
|
gpr = (s64)(s32)gpr;
|
|
break;
|
|
#endif
|
|
case 2:
|
|
gpr = (s64)(s16)gpr;
|
|
break;
|
|
case 1:
|
|
gpr = (s64)(s8)gpr;
|
|
break;
|
|
}
|
|
}
|
|
|
|
kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
|
|
|
|
switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) {
|
|
case KVM_MMIO_REG_GPR:
|
|
kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
|
|
break;
|
|
case KVM_MMIO_REG_FPR:
|
|
vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
|
|
break;
|
|
#ifdef CONFIG_PPC_BOOK3S
|
|
case KVM_MMIO_REG_QPR:
|
|
vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
|
|
break;
|
|
case KVM_MMIO_REG_FQPR:
|
|
vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
|
|
vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr;
|
|
break;
|
|
#endif
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|
|
|
|
int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
|
|
unsigned int rt, unsigned int bytes, int is_bigendian)
|
|
{
|
|
if (bytes > sizeof(run->mmio.data)) {
|
|
printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
|
|
run->mmio.len);
|
|
}
|
|
|
|
run->mmio.phys_addr = vcpu->arch.paddr_accessed;
|
|
run->mmio.len = bytes;
|
|
run->mmio.is_write = 0;
|
|
|
|
vcpu->arch.io_gpr = rt;
|
|
vcpu->arch.mmio_is_bigendian = is_bigendian;
|
|
vcpu->mmio_needed = 1;
|
|
vcpu->mmio_is_write = 0;
|
|
vcpu->arch.mmio_sign_extend = 0;
|
|
|
|
return EMULATE_DO_MMIO;
|
|
}
|
|
|
|
/* Same as above, but sign extends */
|
|
int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu,
|
|
unsigned int rt, unsigned int bytes, int is_bigendian)
|
|
{
|
|
int r;
|
|
|
|
r = kvmppc_handle_load(run, vcpu, rt, bytes, is_bigendian);
|
|
vcpu->arch.mmio_sign_extend = 1;
|
|
|
|
return r;
|
|
}
|
|
|
|
int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
|
|
u64 val, unsigned int bytes, int is_bigendian)
|
|
{
|
|
void *data = run->mmio.data;
|
|
|
|
if (bytes > sizeof(run->mmio.data)) {
|
|
printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
|
|
run->mmio.len);
|
|
}
|
|
|
|
run->mmio.phys_addr = vcpu->arch.paddr_accessed;
|
|
run->mmio.len = bytes;
|
|
run->mmio.is_write = 1;
|
|
vcpu->mmio_needed = 1;
|
|
vcpu->mmio_is_write = 1;
|
|
|
|
/* Store the value at the lowest bytes in 'data'. */
|
|
if (is_bigendian) {
|
|
switch (bytes) {
|
|
case 8: *(u64 *)data = val; break;
|
|
case 4: *(u32 *)data = val; break;
|
|
case 2: *(u16 *)data = val; break;
|
|
case 1: *(u8 *)data = val; break;
|
|
}
|
|
} else {
|
|
/* Store LE value into 'data'. */
|
|
switch (bytes) {
|
|
case 4: st_le32(data, val); break;
|
|
case 2: st_le16(data, val); break;
|
|
case 1: *(u8 *)data = val; break;
|
|
}
|
|
}
|
|
|
|
return EMULATE_DO_MMIO;
|
|
}
|
|
|
|
int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
|
|
{
|
|
int r;
|
|
sigset_t sigsaved;
|
|
|
|
if (vcpu->sigset_active)
|
|
sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved);
|
|
|
|
if (vcpu->mmio_needed) {
|
|
if (!vcpu->mmio_is_write)
|
|
kvmppc_complete_mmio_load(vcpu, run);
|
|
vcpu->mmio_needed = 0;
|
|
} else if (vcpu->arch.dcr_needed) {
|
|
if (!vcpu->arch.dcr_is_write)
|
|
kvmppc_complete_dcr_load(vcpu, run);
|
|
vcpu->arch.dcr_needed = 0;
|
|
} else if (vcpu->arch.osi_needed) {
|
|
u64 *gprs = run->osi.gprs;
|
|
int i;
|
|
|
|
for (i = 0; i < 32; i++)
|
|
kvmppc_set_gpr(vcpu, i, gprs[i]);
|
|
vcpu->arch.osi_needed = 0;
|
|
} else if (vcpu->arch.hcall_needed) {
|
|
int i;
|
|
|
|
kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret);
|
|
for (i = 0; i < 9; ++i)
|
|
kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
|
|
vcpu->arch.hcall_needed = 0;
|
|
}
|
|
|
|
r = kvmppc_vcpu_run(run, vcpu);
|
|
|
|
if (vcpu->sigset_active)
|
|
sigprocmask(SIG_SETMASK, &sigsaved, NULL);
|
|
|
|
return r;
|
|
}
|
|
|
|
int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
|
|
{
|
|
if (irq->irq == KVM_INTERRUPT_UNSET) {
|
|
kvmppc_core_dequeue_external(vcpu, irq);
|
|
return 0;
|
|
}
|
|
|
|
kvmppc_core_queue_external(vcpu, irq);
|
|
|
|
kvm_vcpu_kick(vcpu);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
|
|
struct kvm_enable_cap *cap)
|
|
{
|
|
int r;
|
|
|
|
if (cap->flags)
|
|
return -EINVAL;
|
|
|
|
switch (cap->cap) {
|
|
case KVM_CAP_PPC_OSI:
|
|
r = 0;
|
|
vcpu->arch.osi_enabled = true;
|
|
break;
|
|
case KVM_CAP_PPC_PAPR:
|
|
r = 0;
|
|
vcpu->arch.papr_enabled = true;
|
|
break;
|
|
#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
|
|
case KVM_CAP_SW_TLB: {
|
|
struct kvm_config_tlb cfg;
|
|
void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0];
|
|
|
|
r = -EFAULT;
|
|
if (copy_from_user(&cfg, user_ptr, sizeof(cfg)))
|
|
break;
|
|
|
|
r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
r = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (!r)
|
|
r = kvmppc_sanity_check(vcpu);
|
|
|
|
return r;
|
|
}
|
|
|
|
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
|
|
struct kvm_mp_state *mp_state)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
|
|
struct kvm_mp_state *mp_state)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
long kvm_arch_vcpu_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg)
|
|
{
|
|
struct kvm_vcpu *vcpu = filp->private_data;
|
|
void __user *argp = (void __user *)arg;
|
|
long r;
|
|
|
|
switch (ioctl) {
|
|
case KVM_INTERRUPT: {
|
|
struct kvm_interrupt irq;
|
|
r = -EFAULT;
|
|
if (copy_from_user(&irq, argp, sizeof(irq)))
|
|
goto out;
|
|
r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
|
|
goto out;
|
|
}
|
|
|
|
case KVM_ENABLE_CAP:
|
|
{
|
|
struct kvm_enable_cap cap;
|
|
r = -EFAULT;
|
|
if (copy_from_user(&cap, argp, sizeof(cap)))
|
|
goto out;
|
|
r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
|
|
break;
|
|
}
|
|
|
|
case KVM_SET_ONE_REG:
|
|
case KVM_GET_ONE_REG:
|
|
{
|
|
struct kvm_one_reg reg;
|
|
r = -EFAULT;
|
|
if (copy_from_user(®, argp, sizeof(reg)))
|
|
goto out;
|
|
if (ioctl == KVM_SET_ONE_REG)
|
|
r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®);
|
|
else
|
|
r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®);
|
|
break;
|
|
}
|
|
|
|
#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
|
|
case KVM_DIRTY_TLB: {
|
|
struct kvm_dirty_tlb dirty;
|
|
r = -EFAULT;
|
|
if (copy_from_user(&dirty, argp, sizeof(dirty)))
|
|
goto out;
|
|
r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty);
|
|
break;
|
|
}
|
|
#endif
|
|
default:
|
|
r = -EINVAL;
|
|
}
|
|
|
|
out:
|
|
return r;
|
|
}
|
|
|
|
int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf)
|
|
{
|
|
return VM_FAULT_SIGBUS;
|
|
}
|
|
|
|
static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
|
|
{
|
|
u32 inst_lis = 0x3c000000;
|
|
u32 inst_ori = 0x60000000;
|
|
u32 inst_nop = 0x60000000;
|
|
u32 inst_sc = 0x44000002;
|
|
u32 inst_imm_mask = 0xffff;
|
|
|
|
/*
|
|
* The hypercall to get into KVM from within guest context is as
|
|
* follows:
|
|
*
|
|
* lis r0, r0, KVM_SC_MAGIC_R0@h
|
|
* ori r0, KVM_SC_MAGIC_R0@l
|
|
* sc
|
|
* nop
|
|
*/
|
|
pvinfo->hcall[0] = inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask);
|
|
pvinfo->hcall[1] = inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask);
|
|
pvinfo->hcall[2] = inst_sc;
|
|
pvinfo->hcall[3] = inst_nop;
|
|
|
|
return 0;
|
|
}
|
|
|
|
long kvm_arch_vm_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg)
|
|
{
|
|
void __user *argp = (void __user *)arg;
|
|
long r;
|
|
|
|
switch (ioctl) {
|
|
case KVM_PPC_GET_PVINFO: {
|
|
struct kvm_ppc_pvinfo pvinfo;
|
|
memset(&pvinfo, 0, sizeof(pvinfo));
|
|
r = kvm_vm_ioctl_get_pvinfo(&pvinfo);
|
|
if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) {
|
|
r = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
break;
|
|
}
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case KVM_CREATE_SPAPR_TCE: {
|
|
struct kvm_create_spapr_tce create_tce;
|
|
struct kvm *kvm = filp->private_data;
|
|
|
|
r = -EFAULT;
|
|
if (copy_from_user(&create_tce, argp, sizeof(create_tce)))
|
|
goto out;
|
|
r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce);
|
|
goto out;
|
|
}
|
|
#endif /* CONFIG_PPC_BOOK3S_64 */
|
|
|
|
#ifdef CONFIG_KVM_BOOK3S_64_HV
|
|
case KVM_ALLOCATE_RMA: {
|
|
struct kvm *kvm = filp->private_data;
|
|
struct kvm_allocate_rma rma;
|
|
|
|
r = kvm_vm_ioctl_allocate_rma(kvm, &rma);
|
|
if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma)))
|
|
r = -EFAULT;
|
|
break;
|
|
}
|
|
|
|
case KVM_PPC_ALLOCATE_HTAB: {
|
|
struct kvm *kvm = filp->private_data;
|
|
u32 htab_order;
|
|
|
|
r = -EFAULT;
|
|
if (get_user(htab_order, (u32 __user *)argp))
|
|
break;
|
|
r = kvmppc_alloc_reset_hpt(kvm, &htab_order);
|
|
if (r)
|
|
break;
|
|
r = -EFAULT;
|
|
if (put_user(htab_order, (u32 __user *)argp))
|
|
break;
|
|
r = 0;
|
|
break;
|
|
}
|
|
#endif /* CONFIG_KVM_BOOK3S_64_HV */
|
|
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
|
case KVM_PPC_GET_SMMU_INFO: {
|
|
struct kvm *kvm = filp->private_data;
|
|
struct kvm_ppc_smmu_info info;
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
r = kvm_vm_ioctl_get_smmu_info(kvm, &info);
|
|
if (r >= 0 && copy_to_user(argp, &info, sizeof(info)))
|
|
r = -EFAULT;
|
|
break;
|
|
}
|
|
#endif /* CONFIG_PPC_BOOK3S_64 */
|
|
default:
|
|
r = -ENOTTY;
|
|
}
|
|
|
|
out:
|
|
return r;
|
|
}
|
|
|
|
static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)];
|
|
static unsigned long nr_lpids;
|
|
|
|
long kvmppc_alloc_lpid(void)
|
|
{
|
|
long lpid;
|
|
|
|
do {
|
|
lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS);
|
|
if (lpid >= nr_lpids) {
|
|
pr_err("%s: No LPIDs free\n", __func__);
|
|
return -ENOMEM;
|
|
}
|
|
} while (test_and_set_bit(lpid, lpid_inuse));
|
|
|
|
return lpid;
|
|
}
|
|
|
|
void kvmppc_claim_lpid(long lpid)
|
|
{
|
|
set_bit(lpid, lpid_inuse);
|
|
}
|
|
|
|
void kvmppc_free_lpid(long lpid)
|
|
{
|
|
clear_bit(lpid, lpid_inuse);
|
|
}
|
|
|
|
void kvmppc_init_lpid(unsigned long nr_lpids_param)
|
|
{
|
|
nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param);
|
|
memset(lpid_inuse, 0, sizeof(lpid_inuse));
|
|
}
|
|
|
|
int kvm_arch_init(void *opaque)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void kvm_arch_exit(void)
|
|
{
|
|
}
|