68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright IBM Corp. 2008
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*
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* Authors: Hollis Blanchard <hollisb@us.ibm.com>
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*/
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#ifndef __ASM_44X_H__
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#define __ASM_44X_H__
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#include <linux/kvm_host.h>
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#define PPC44x_TLB_SIZE 64
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/* If the guest is expecting it, this can be as large as we like; we'd just
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* need to find some way of advertising it. */
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#define KVM44x_GUEST_TLB_SIZE 64
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struct kvmppc_44x_tlbe {
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u32 tid; /* Only the low 8 bits are used. */
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u32 word0;
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u32 word1;
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u32 word2;
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};
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struct kvmppc_44x_shadow_ref {
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struct page *page;
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u16 gtlb_index;
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u8 writeable;
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u8 tid;
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};
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struct kvmppc_vcpu_44x {
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/* Unmodified copy of the guest's TLB. */
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struct kvmppc_44x_tlbe guest_tlb[KVM44x_GUEST_TLB_SIZE];
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/* References to guest pages in the hardware TLB. */
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struct kvmppc_44x_shadow_ref shadow_refs[PPC44x_TLB_SIZE];
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/* State of the shadow TLB at guest context switch time. */
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struct kvmppc_44x_tlbe shadow_tlb[PPC44x_TLB_SIZE];
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u8 shadow_tlb_mod[PPC44x_TLB_SIZE];
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struct kvm_vcpu vcpu;
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};
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static inline struct kvmppc_vcpu_44x *to_44x(struct kvm_vcpu *vcpu)
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{
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return container_of(vcpu, struct kvmppc_vcpu_44x, vcpu);
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}
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void kvmppc_44x_tlb_put(struct kvm_vcpu *vcpu);
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void kvmppc_44x_tlb_load(struct kvm_vcpu *vcpu);
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#endif /* __ASM_44X_H__ */
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