1 files changed, 61 insertions, 0 deletions

diff --git a/arch/powerpc/include/asm/kvm_44x.h b/arch/powerpc/include/asm/kvm_44x.h
new file mode 100644
index 000000000000..f49031b632ca
--- /dev/null
+++ b/arch/powerpc/include/asm/kvm_44x.h
@@ -0,0 +1,61 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * Copyright IBM Corp. 2008
+ *
+ * Authors: Hollis Blanchard <hollisb@us.ibm.com>
+ */
+
+#ifndef __ASM_44X_H__
+#define __ASM_44X_H__
+
+#include <linux/kvm_host.h>
+
+#define PPC44x_TLB_SIZE 64
+
+/* If the guest is expecting it, this can be as large as we like; we'd just
+ * need to find some way of advertising it. */
+#define KVM44x_GUEST_TLB_SIZE 64
+
+struct kvmppc_44x_shadow_ref {
+        struct page *page;
+        u16 gtlb_index;
+        u8 writeable;
+        u8 tid;
+};
+
+struct kvmppc_vcpu_44x {
+        /* Unmodified copy of the guest's TLB. */
+        struct kvmppc_44x_tlbe guest_tlb[KVM44x_GUEST_TLB_SIZE];
+
+        /* References to guest pages in the hardware TLB. */
+        struct kvmppc_44x_shadow_ref shadow_refs[PPC44x_TLB_SIZE];
+
+        /* State of the shadow TLB at guest context switch time. */
+        struct kvmppc_44x_tlbe shadow_tlb[PPC44x_TLB_SIZE];
+        u8 shadow_tlb_mod[PPC44x_TLB_SIZE];
+
+        struct kvm_vcpu vcpu;
+};
+
+static inline struct kvmppc_vcpu_44x *to_44x(struct kvm_vcpu *vcpu)
+{
+        return container_of(vcpu, struct kvmppc_vcpu_44x, vcpu);
+}
+
+void kvmppc_set_pid(struct kvm_vcpu *vcpu, u32 new_pid);
+void kvmppc_44x_tlb_put(struct kvm_vcpu *vcpu);
+void kvmppc_44x_tlb_load(struct kvm_vcpu *vcpu);
+
+#endif /* __ASM_44X_H__ */