summaryrefslogtreecommitdiff
path: root/arch/powerpc/kvm/powerpc.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/kvm/powerpc.c')
-rw-r--r--arch/powerpc/kvm/powerpc.c149
1 files changed, 131 insertions, 18 deletions
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index f06cf93..9b8683f 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -25,6 +25,7 @@
#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>
@@ -69,7 +70,7 @@ int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu)
case EMULATE_FAIL:
/* XXX Deliver Program interrupt to guest. */
printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__,
- vcpu->arch.last_inst);
+ kvmppc_get_last_inst(vcpu));
r = RESUME_HOST;
break;
default:
@@ -137,6 +138,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
{
kvmppc_free_vcpus(kvm);
kvm_free_physmem(kvm);
+ cleanup_srcu_struct(&kvm->srcu);
kfree(kvm);
}
@@ -146,6 +148,10 @@ int kvm_dev_ioctl_check_extension(long ext)
switch (ext) {
case KVM_CAP_PPC_SEGSTATE:
+ case KVM_CAP_PPC_PAIRED_SINGLES:
+ case KVM_CAP_PPC_UNSET_IRQ:
+ case KVM_CAP_ENABLE_CAP:
+ case KVM_CAP_PPC_OSI:
r = 1;
break;
case KVM_CAP_COALESCED_MMIO:
@@ -165,14 +171,24 @@ long kvm_arch_dev_ioctl(struct file *filp,
return -EINVAL;
}
-int kvm_arch_set_memory_region(struct kvm *kvm,
- struct kvm_userspace_memory_region *mem,
- struct kvm_memory_slot old,
- int user_alloc)
+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 0;
}
+void kvm_arch_commit_memory_region(struct kvm *kvm,
+ struct kvm_userspace_memory_region *mem,
+ struct kvm_memory_slot old,
+ int user_alloc)
+{
+ return;
+}
+
+
void kvm_arch_flush_shadow(struct kvm *kvm)
{
}
@@ -181,12 +197,17 @@ struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id)
{
struct kvm_vcpu *vcpu;
vcpu = kvmppc_core_vcpu_create(kvm, id);
- kvmppc_create_vcpu_debugfs(vcpu, id);
+ if (!IS_ERR(vcpu))
+ 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);
}
@@ -260,34 +281,72 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu,
struct kvm_run *run)
{
- ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr];
- *gpr = run->dcr.data;
+ 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)
{
- ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr];
+ u64 gpr;
- if (run->mmio.len > sizeof(*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 4: *gpr = *(u32 *)run->mmio.data; break;
- case 2: *gpr = *(u16 *)run->mmio.data; break;
- case 1: *gpr = *(u8 *)run->mmio.data; break;
+ 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;
+ 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_REG_EXT_MASK) {
+ case KVM_REG_GPR:
+ kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr);
+ break;
+ case KVM_REG_FPR:
+ vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr;
+ break;
+#ifdef CONFIG_PPC_BOOK3S
+ case KVM_REG_QPR:
+ vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr;
+ break;
+ case KVM_REG_FQPR:
+ vcpu->arch.fpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr;
+ vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_REG_MASK] = gpr;
+ break;
+#endif
+ default:
+ BUG();
+ }
}
int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
@@ -306,12 +365,25 @@ int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
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,
- u32 val, unsigned int bytes, int is_bigendian)
+ u64 val, unsigned int bytes, int is_bigendian)
{
void *data = run->mmio.data;
@@ -329,6 +401,7 @@ int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu,
/* 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;
@@ -363,6 +436,13 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
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;
}
kvmppc_core_deliver_interrupts(vcpu);
@@ -383,7 +463,10 @@ 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)
{
- kvmppc_core_queue_external(vcpu, irq);
+ if (irq->irq == KVM_INTERRUPT_UNSET)
+ kvmppc_core_dequeue_external(vcpu, irq);
+ else
+ kvmppc_core_queue_external(vcpu, irq);
if (waitqueue_active(&vcpu->wq)) {
wake_up_interruptible(&vcpu->wq);
@@ -393,6 +476,27 @@ int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
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;
+ default:
+ r = -EINVAL;
+ break;
+ }
+
+ return r;
+}
+
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
@@ -421,6 +525,15 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
r = kvm_vcpu_ioctl_interrupt(vcpu, &irq);
break;
}
+ 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;
+ }
default:
r = -EINVAL;
}
generated by cgit v0.10.2 at 2024-10-12 02:35:51 (GMT)