KVM: MIPS: Drop vm_init() callback

Now that the commpage doesn't use wired TLB entries, the per-CPU
vm_init() callback is the only work done by kvm_mips_init_vm_percpu().

The trap & emulate implementation doesn't actually need to do anything
from vm_init(), and the future VZ implementation would be better served
by a kvm_arch_hardware_enable callback anyway.

Therefore drop the vm_init() callback entirely, allowing the
kvm_mips_init_vm_percpu() function to also be dropped, along with the
kvm_mips_instance atomic counter.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org

1 files changed, 0 insertions, 16 deletions

diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index c4fc52e39f34..07ce10e3627a 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -92,22 +92,8 @@ void kvm_arch_check_processor_compat(void *rtn)
 	*(int *)rtn = 0;
 }
 
-static void kvm_mips_init_vm_percpu(void *arg)
-{
-	struct kvm *kvm = (struct kvm *)arg;
-
-	kvm_mips_callbacks->vm_init(kvm);
-
-}
-
 int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 {
-	if (atomic_inc_return(&kvm_mips_instance) == 1) {
-		kvm_debug("%s: 1st KVM instance, setup host TLB parameters\n",
-			  __func__);
-		on_each_cpu(kvm_mips_init_vm_percpu, kvm, 1);
-	}
-
 	return 0;
 }
 
@@ -150,8 +136,6 @@ void kvm_mips_free_vcpus(struct kvm *kvm)
 void kvm_arch_destroy_vm(struct kvm *kvm)
 {
 	kvm_mips_free_vcpus(kvm);
-
-	atomic_dec(&kvm_mips_instance);
 }
 
 long kvm_arch_dev_ioctl(struct file *filp, unsigned int ioctl,