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kvm_44x.h
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1 /*
2  * This program is free software; you can redistribute it and/or modify
3  * it under the terms of the GNU General Public License, version 2, as
4  * published by the Free Software Foundation.
5  *
6  * This program is distributed in the hope that it will be useful,
7  * but WITHOUT ANY WARRANTY; without even the implied warranty of
8  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9  * GNU General Public License for more details.
10  *
11  * You should have received a copy of the GNU General Public License
12  * along with this program; if not, write to the Free Software
13  * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14  *
15  * Copyright IBM Corp. 2008
16  *
17  * Authors: Hollis Blanchard <[email protected]>
18  */
19 
20 #ifndef __ASM_44X_H__
21 #define __ASM_44X_H__
22 
23 #include <linux/kvm_host.h>
24 
25 #define PPC44x_TLB_SIZE 64
26 
27 /* If the guest is expecting it, this can be as large as we like; we'd just
28  * need to find some way of advertising it. */
29 #define KVM44x_GUEST_TLB_SIZE 64
30 
32  u32 tid; /* Only the low 8 bits are used. */
36 };
37 
39  struct page *page;
43 };
44 
46  /* Unmodified copy of the guest's TLB. */
48 
49  /* References to guest pages in the hardware TLB. */
51 
52  /* State of the shadow TLB at guest context switch time. */
55 
56  struct kvm_vcpu vcpu;
57 };
58 
59 static inline struct kvmppc_vcpu_44x *to_44x(struct kvm_vcpu *vcpu)
60 {
61  return container_of(vcpu, struct kvmppc_vcpu_44x, vcpu);
62 }
63 
64 void kvmppc_44x_tlb_put(struct kvm_vcpu *vcpu);
65 void kvmppc_44x_tlb_load(struct kvm_vcpu *vcpu);
66 
67 #endif /* __ASM_44X_H__ */