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Diffstat (limited to 'arch/powerpc/kvm/powerpc.c')
-rw-r--r--arch/powerpc/kvm/powerpc.c144
1 files changed, 119 insertions, 25 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 70739a08956..6316ee336e8 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -25,6 +25,7 @@
#include <linux/hrtimer.h>
#include <linux/fs.h>
#include <linux/slab.h>
+#include <linux/file.h>
#include <asm/cputable.h>
#include <asm/uaccess.h>
#include <asm/kvm_ppc.h>
@@ -32,6 +33,7 @@
#include <asm/cputhreads.h>
#include <asm/irqflags.h>
#include "timing.h"
+#include "irq.h"
#include "../mm/mmu_decl.h"
#define CREATE_TRACE_POINTS
@@ -237,7 +239,8 @@ int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
r = RESUME_HOST;
break;
default:
- BUG();
+ WARN_ON(1);
+ r = RESUME_GUEST;
}
return r;
@@ -305,6 +308,7 @@ int kvm_dev_ioctl_check_extension(long ext)
#ifdef CONFIG_BOOKE
case KVM_CAP_PPC_BOOKE_SREGS:
case KVM_CAP_PPC_BOOKE_WATCHDOG:
+ case KVM_CAP_PPC_EPR:
#else
case KVM_CAP_PPC_SEGSTATE:
case KVM_CAP_PPC_HIOR:
@@ -315,6 +319,7 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_ENABLE_CAP:
case KVM_CAP_ONE_REG:
case KVM_CAP_IOEVENTFD:
+ case KVM_CAP_DEVICE_CTRL:
r = 1;
break;
#ifndef CONFIG_KVM_BOOK3S_64_HV
@@ -324,6 +329,9 @@ int kvm_dev_ioctl_check_extension(long ext)
#if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
case KVM_CAP_SW_TLB:
#endif
+#ifdef CONFIG_KVM_MPIC
+ case KVM_CAP_IRQ_MPIC:
+#endif
r = 1;
break;
case KVM_CAP_COALESCED_MMIO:
@@ -333,6 +341,10 @@ int kvm_dev_ioctl_check_extension(long ext)
#ifdef CONFIG_PPC_BOOK3S_64
case KVM_CAP_SPAPR_TCE:
case KVM_CAP_PPC_ALLOC_HTAB:
+ case KVM_CAP_PPC_RTAS:
+#ifdef CONFIG_KVM_XICS
+ case KVM_CAP_IRQ_XICS:
+#endif
r = 1;
break;
#endif /* CONFIG_PPC_BOOK3S_64 */
@@ -409,18 +421,17 @@ int kvm_arch_create_memslot(struct kvm_memory_slot *slot, unsigned long npages)
}
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)
+ struct kvm_memory_slot *memslot,
+ struct kvm_userspace_memory_region *mem,
+ enum kvm_mr_change change)
{
return kvmppc_core_prepare_memory_region(kvm, memslot, mem);
}
void kvm_arch_commit_memory_region(struct kvm *kvm,
- struct kvm_userspace_memory_region *mem,
- struct kvm_memory_slot old,
- int user_alloc)
+ struct kvm_userspace_memory_region *mem,
+ const struct kvm_memory_slot *old,
+ enum kvm_mr_change change)
{
kvmppc_core_commit_memory_region(kvm, mem, old);
}
@@ -458,6 +469,16 @@ void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
tasklet_kill(&vcpu->arch.tasklet);
kvmppc_remove_vcpu_debugfs(vcpu);
+
+ switch (vcpu->arch.irq_type) {
+ case KVMPPC_IRQ_MPIC:
+ kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu);
+ break;
+ case KVMPPC_IRQ_XICS:
+ kvmppc_xics_free_icp(vcpu);
+ break;
+ }
+
kvmppc_core_vcpu_free(vcpu);
}
@@ -530,12 +551,6 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
#endif
}
-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)
{
@@ -610,6 +625,8 @@ static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu,
int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
unsigned int rt, unsigned int bytes, int is_bigendian)
{
+ int idx, ret;
+
if (bytes > sizeof(run->mmio.data)) {
printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
run->mmio.len);
@@ -625,8 +642,14 @@ int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
vcpu->mmio_is_write = 0;
vcpu->arch.mmio_sign_extend = 0;
- if (!kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
- bytes, &run->mmio.data)) {
+ idx = srcu_read_lock(&vcpu->kvm->srcu);
+
+ ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
+ bytes, &run->mmio.data);
+
+ srcu_read_unlock(&vcpu->kvm->srcu, idx);
+
+ if (!ret) {
kvmppc_complete_mmio_load(vcpu, run);
vcpu->mmio_needed = 0;
return EMULATE_DONE;
@@ -651,6 +674,7 @@ 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;
+ int idx, ret;
if (bytes > sizeof(run->mmio.data)) {
printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__,
@@ -680,9 +704,14 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
}
}
- if (!kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
- bytes, &run->mmio.data)) {
- kvmppc_complete_mmio_load(vcpu, run);
+ idx = srcu_read_lock(&vcpu->kvm->srcu);
+
+ ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr,
+ bytes, &run->mmio.data);
+
+ srcu_read_unlock(&vcpu->kvm->srcu, idx);
+
+ if (!ret) {
vcpu->mmio_needed = 0;
return EMULATE_DONE;
}
@@ -720,6 +749,11 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
for (i = 0; i < 9; ++i)
kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]);
vcpu->arch.hcall_needed = 0;
+#ifdef CONFIG_BOOKE
+ } else if (vcpu->arch.epr_needed) {
+ kvmppc_set_epr(vcpu, run->epr.epr);
+ vcpu->arch.epr_needed = 0;
+#endif
}
r = kvmppc_vcpu_run(run, vcpu);
@@ -733,7 +767,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
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);
+ kvmppc_core_dequeue_external(vcpu);
return 0;
}
@@ -761,6 +795,13 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
r = 0;
vcpu->arch.papr_enabled = true;
break;
+ case KVM_CAP_PPC_EPR:
+ r = 0;
+ if (cap->args[0])
+ vcpu->arch.epr_flags |= KVMPPC_EPR_USER;
+ else
+ vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER;
+ break;
#ifdef CONFIG_BOOKE
case KVM_CAP_PPC_BOOKE_WATCHDOG:
r = 0;
@@ -780,6 +821,44 @@ static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
break;
}
#endif
+#ifdef CONFIG_KVM_MPIC
+ case KVM_CAP_IRQ_MPIC: {
+ struct file *filp;
+ struct kvm_device *dev;
+
+ r = -EBADF;
+ filp = fget(cap->args[0]);
+ if (!filp)
+ break;
+
+ r = -EPERM;
+ dev = kvm_device_from_filp(filp);
+ if (dev)
+ r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]);
+
+ fput(filp);
+ break;
+ }
+#endif
+#ifdef CONFIG_KVM_XICS
+ case KVM_CAP_IRQ_XICS: {
+ struct file *filp;
+ struct kvm_device *dev;
+
+ r = -EBADF;
+ filp = fget(cap->args[0]);
+ if (!filp)
+ break;
+
+ r = -EPERM;
+ dev = kvm_device_from_filp(filp);
+ if (dev)
+ r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]);
+
+ fput(filp);
+ break;
+ }
+#endif /* CONFIG_KVM_XICS */
default:
r = -EINVAL;
break;
@@ -902,9 +981,22 @@ static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo)
return 0;
}
+int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event,
+ bool line_status)
+{
+ if (!irqchip_in_kernel(kvm))
+ return -ENXIO;
+
+ irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
+ irq_event->irq, irq_event->level,
+ line_status);
+ return 0;
+}
+
long kvm_arch_vm_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
{
+ struct kvm *kvm __maybe_unused = filp->private_data;
void __user *argp = (void __user *)arg;
long r;
@@ -923,7 +1015,6 @@ long kvm_arch_vm_ioctl(struct file *filp,
#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)))
@@ -935,8 +1026,8 @@ long kvm_arch_vm_ioctl(struct file *filp,
#ifdef CONFIG_KVM_BOOK3S_64_HV
case KVM_ALLOCATE_RMA: {
- struct kvm *kvm = filp->private_data;
struct kvm_allocate_rma rma;
+ struct kvm *kvm = filp->private_data;
r = kvm_vm_ioctl_allocate_rma(kvm, &rma);
if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma)))
@@ -945,7 +1036,6 @@ long kvm_arch_vm_ioctl(struct file *filp,
}
case KVM_PPC_ALLOCATE_HTAB: {
- struct kvm *kvm = filp->private_data;
u32 htab_order;
r = -EFAULT;
@@ -962,7 +1052,6 @@ long kvm_arch_vm_ioctl(struct file *filp,
}
case KVM_PPC_GET_HTAB_FD: {
- struct kvm *kvm = filp->private_data;
struct kvm_get_htab_fd ghf;
r = -EFAULT;
@@ -975,7 +1064,6 @@ long kvm_arch_vm_ioctl(struct file *filp,
#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));
@@ -984,6 +1072,12 @@ long kvm_arch_vm_ioctl(struct file *filp,
r = -EFAULT;
break;
}
+ case KVM_PPC_RTAS_DEFINE_TOKEN: {
+ struct kvm *kvm = filp->private_data;
+
+ r = kvm_vm_ioctl_rtas_define_token(kvm, argp);
+ break;
+ }
#endif /* CONFIG_PPC_BOOK3S_64 */
default:
r = -ENOTTY;
generated by cgit v1.2.3-70-g09d2 (git 2.51.2) at 2025-11-04 11:24:32 +0000