KVM: Allow dynamic allocation of the mmu shadow cache size

The user is now able to set how many mmu pages will be allocated to the guest.

Signed-off-by: Izik Eidus <izike@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 057a7f34ee36..d2fd973d81fe 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -347,11 +347,14 @@ struct kvm_signal_mask {
  */
 #define KVM_CAP_IRQCHIP   0
 #define KVM_CAP_HLT       1
+#define KVM_CAP_MMU_SHADOW_CACHE_CONTROL 2
 
 /*
  * ioctls for VM fds
  */
 #define KVM_SET_MEMORY_REGION     _IOW(KVMIO, 0x40, struct kvm_memory_region)
+#define KVM_SET_NR_MMU_PAGES      _IO(KVMIO, 0x44)
+#define KVM_GET_NR_MMU_PAGES      _IO(KVMIO, 0x45)
 /*
  * KVM_CREATE_VCPU receives as a parameter the vcpu slot, and returns
  * a vcpu fd.