#include <linux/errno.h>
#include <linux/err.h>
#include <linux/kvm_host.h>
-#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/hrtimer.h>
#include <linux/fs.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"
-gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn)
+int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
{
- return gfn;
+ return !(v->arch.shared->msr & MSR_WE) ||
+ !!(v->arch.pending_exceptions) ||
+ v->requests;
}
-int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
+int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
{
- return !(v->arch.msr & MSR_WE) || !!(v->arch.pending_exceptions);
+ 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_E500)
+ /* 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
+
+ r = true;
+
+out:
+ vcpu->arch.sane = r;
+ return r ? 0 : -EINVAL;
+}
int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
{
*(int *)rtn = kvmppc_core_check_processor_compat();
}
-struct kvm *kvm_arch_create_vm(void)
+int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
{
- struct kvm *kvm;
-
- kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL);
- if (!kvm)
- return ERR_PTR(-ENOMEM);
+ if (type)
+ return -EINVAL;
- return kvm;
+ return kvmppc_core_init_vm(kvm);
}
-static void kvmppc_free_vcpus(struct kvm *kvm)
+void kvm_arch_destroy_vm(struct kvm *kvm)
{
unsigned int i;
struct kvm_vcpu *vcpu;
kvm->vcpus[i] = NULL;
atomic_set(&kvm->online_vcpus, 0);
+
+ kvmppc_core_destroy_vm(kvm);
+
mutex_unlock(&kvm->lock);
}
{
}
-void kvm_arch_destroy_vm(struct kvm *kvm)
-{
- kvmppc_free_vcpus(kvm);
- kvm_free_physmem(kvm);
- cleanup_srcu_struct(&kvm->srcu);
- kfree(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_PAIRED_SINGLES:
+ case KVM_CAP_PPC_PAPR:
+#endif
case KVM_CAP_PPC_UNSET_IRQ:
+ case KVM_CAP_PPC_IRQ_LEVEL:
case KVM_CAP_ENABLE_CAP:
+ 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:
+#ifdef CONFIG_KVM_E500
+ case KVM_CAP_SW_TLB:
+#endif
r = 1;
break;
case KVM_CAP_COALESCED_MMIO:
r = KVM_COALESCED_MMIO_PAGE_OFFSET;
break;
+#endif
+#ifdef CONFIG_KVM_BOOK3S_64_HV
+ case KVM_CAP_SPAPR_TCE:
+ r = 1;
+ break;
+ 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
default:
r = 0;
break;
struct kvm_userspace_memory_region *mem,
int user_alloc)
{
- return 0;
+ return kvmppc_core_prepare_memory_region(kvm, mem);
}
void kvm_arch_commit_memory_region(struct kvm *kvm,
struct kvm_memory_slot old,
int user_alloc)
{
- return;
+ kvmppc_core_commit_memory_region(kvm, mem);
}
{
struct kvm_vcpu *vcpu;
vcpu = kvmppc_core_vcpu_create(kvm, id);
+ vcpu->arch.wqp = &vcpu->wq;
if (!IS_ERR(vcpu))
kvmppc_create_vcpu_debugfs(vcpu, id);
return vcpu;
return kvmppc_core_pending_dec(vcpu);
}
-static void kvmppc_decrementer_func(unsigned long data)
-{
- struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
-
- kvmppc_core_queue_dec(vcpu);
-
- if (waitqueue_active(&vcpu->wq)) {
- wake_up_interruptible(&vcpu->wq);
- vcpu->stat.halt_wakeup++;
- }
-}
-
/*
* low level hrtimer wake routine. Because this runs in hardirq context
* we schedule a tasklet to do the real work.
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_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,
static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
struct kvm_run *run)
{
- u64 gpr;
+ u64 uninitialized_var(gpr);
if (run->mmio.len > sizeof(gpr)) {
printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len);
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_core_deliver_interrupts(vcpu);
+ 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;
+ }
- local_irq_disable();
- kvm_guest_enter();
- r = __kvmppc_vcpu_run(run, vcpu);
- kvm_guest_exit();
- local_irq_enable();
+ 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)
+void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
{
- if (irq->irq == KVM_INTERRUPT_UNSET)
- kvmppc_core_dequeue_external(vcpu, irq);
- else
- kvmppc_core_queue_external(vcpu, irq);
+ int me;
+ int cpu = vcpu->cpu;
- if (waitqueue_active(&vcpu->wq)) {
- wake_up_interruptible(&vcpu->wq);
+ me = get_cpu();
+ if (waitqueue_active(vcpu->arch.wqp)) {
+ wake_up_interruptible(vcpu->arch.wqp);
vcpu->stat.halt_wakeup++;
+ } else if (cpu != me && cpu != -1) {
+ smp_send_reschedule(vcpu->cpu);
}
+ put_cpu();
+}
+
+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;
}
r = 0;
vcpu->arch.osi_enabled = true;
break;
+ case KVM_CAP_PPC_PAPR:
+ r = 0;
+ vcpu->arch.papr_enabled = true;
+ break;
+#ifdef CONFIG_KVM_E500
+ 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;
}
void __user *argp = (void __user *)arg;
long r;
- if (ioctl == KVM_INTERRUPT) {
+ switch (ioctl) {
+ case KVM_INTERRUPT: {
struct kvm_interrupt irq;
r = -EFAULT;
if (copy_from_user(&irq, argp, sizeof(irq)))
- goto out_nolock;
+ goto out;
r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
- goto out_nolock;
+ goto out;
}
- vcpu_load(vcpu);
- switch (ioctl) {
case KVM_ENABLE_CAP:
{
struct kvm_enable_cap cap;
r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
break;
}
+
+#ifdef CONFIG_KVM_E500
+ 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:
- vcpu_put(vcpu);
-out_nolock:
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_KVM_BOOK3S_64_HV
+ 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;
+ }
+
+ 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;
+ }
+#endif /* CONFIG_KVM_BOOK3S_64_HV */
+
default:
r = -ENOTTY;
}
+out:
return r;
}