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-rw-r--r--arch/x86/kvm/x86.c42
-rw-r--r--include/linux/kvm.h4
2 files changed, 24 insertions, 22 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index ec60409299a3..a7069ec2267c 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -46,6 +46,9 @@
46#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM 46#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
47#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU 47#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
48 48
49static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
50 struct kvm_cpuid_entry2 __user *entries);
51
49struct kvm_x86_ops *kvm_x86_ops; 52struct kvm_x86_ops *kvm_x86_ops;
50 53
51struct kvm_stats_debugfs_item debugfs_entries[] = { 54struct kvm_stats_debugfs_item debugfs_entries[] = {
@@ -727,6 +730,24 @@ long kvm_arch_dev_ioctl(struct file *filp,
727 r = 0; 730 r = 0;
728 break; 731 break;
729 } 732 }
733 case KVM_GET_SUPPORTED_CPUID: {
734 struct kvm_cpuid2 __user *cpuid_arg = argp;
735 struct kvm_cpuid2 cpuid;
736
737 r = -EFAULT;
738 if (copy_from_user(&cpuid, cpuid_arg, sizeof cpuid))
739 goto out;
740 r = kvm_dev_ioctl_get_supported_cpuid(&cpuid,
741 cpuid_arg->entries);
742 if (r)
743 goto out;
744
745 r = -EFAULT;
746 if (copy_to_user(cpuid_arg, &cpuid, sizeof cpuid))
747 goto out;
748 r = 0;
749 break;
750 }
730 default: 751 default:
731 r = -EINVAL; 752 r = -EINVAL;
732 } 753 }
@@ -974,8 +995,7 @@ static void do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
974 put_cpu(); 995 put_cpu();
975} 996}
976 997
977static int kvm_vm_ioctl_get_supported_cpuid(struct kvm *kvm, 998static int kvm_dev_ioctl_get_supported_cpuid(struct kvm_cpuid2 *cpuid,
978 struct kvm_cpuid2 *cpuid,
979 struct kvm_cpuid_entry2 __user *entries) 999 struct kvm_cpuid_entry2 __user *entries)
980{ 1000{
981 struct kvm_cpuid_entry2 *cpuid_entries; 1001 struct kvm_cpuid_entry2 *cpuid_entries;
@@ -1487,24 +1507,6 @@ long kvm_arch_vm_ioctl(struct file *filp,
1487 r = 0; 1507 r = 0;
1488 break; 1508 break;
1489 } 1509 }
1490 case KVM_GET_SUPPORTED_CPUID: {
1491 struct kvm_cpuid2 __user *cpuid_arg = argp;
1492 struct kvm_cpuid2 cpuid;
1493
1494 r = -EFAULT;
1495 if (copy_from_user(&cpuid, cpuid_arg, sizeof cpuid))
1496 goto out;
1497 r = kvm_vm_ioctl_get_supported_cpuid(kvm, &cpuid,
1498 cpuid_arg->entries);
1499 if (r)
1500 goto out;
1501
1502 r = -EFAULT;
1503 if (copy_to_user(cpuid_arg, &cpuid, sizeof cpuid))
1504 goto out;
1505 r = 0;
1506 break;
1507 }
1508 default: 1510 default:
1509 ; 1511 ;
1510 } 1512 }
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 4de4fd2d8607..c1ec04fd000d 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -221,6 +221,7 @@ struct kvm_vapic_addr {
221 * Get size for mmap(vcpu_fd) 221 * Get size for mmap(vcpu_fd)
222 */ 222 */
223#define KVM_GET_VCPU_MMAP_SIZE _IO(KVMIO, 0x04) /* in bytes */ 223#define KVM_GET_VCPU_MMAP_SIZE _IO(KVMIO, 0x04) /* in bytes */
224#define KVM_GET_SUPPORTED_CPUID _IOWR(KVMIO, 0x05, struct kvm_cpuid2)
224 225
225/* 226/*
226 * Extension capability list. 227 * Extension capability list.
@@ -230,8 +231,8 @@ struct kvm_vapic_addr {
230#define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2 231#define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2
231#define KVM_CAP_USER_MEMORY 3 232#define KVM_CAP_USER_MEMORY 3
232#define KVM_CAP_SET_TSS_ADDR 4 233#define KVM_CAP_SET_TSS_ADDR 4
233#define KVM_CAP_EXT_CPUID 5
234#define KVM_CAP_VAPIC 6 234#define KVM_CAP_VAPIC 6
235#define KVM_CAP_EXT_CPUID 7
235 236
236/* 237/*
237 * ioctls for VM fds 238 * ioctls for VM fds
@@ -249,7 +250,6 @@ struct kvm_vapic_addr {
249#define KVM_CREATE_VCPU _IO(KVMIO, 0x41) 250#define KVM_CREATE_VCPU _IO(KVMIO, 0x41)
250#define KVM_GET_DIRTY_LOG _IOW(KVMIO, 0x42, struct kvm_dirty_log) 251#define KVM_GET_DIRTY_LOG _IOW(KVMIO, 0x42, struct kvm_dirty_log)
251#define KVM_SET_MEMORY_ALIAS _IOW(KVMIO, 0x43, struct kvm_memory_alias) 252#define KVM_SET_MEMORY_ALIAS _IOW(KVMIO, 0x43, struct kvm_memory_alias)
252#define KVM_GET_SUPPORTED_CPUID _IOWR(KVMIO, 0x48, struct kvm_cpuid2)
253/* Device model IOC */ 253/* Device model IOC */
254#define KVM_CREATE_IRQCHIP _IO(KVMIO, 0x60) 254#define KVM_CREATE_IRQCHIP _IO(KVMIO, 0x60)
255#define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level) 255#define KVM_IRQ_LINE _IOW(KVMIO, 0x61, struct kvm_irq_level)