forked from Minki/linux
dd9ebf1f94
Dynamically assign host PIDs to guest PIDs, splitting each guest PID into multiple host (shadow) PIDs based on kernel/user and MSR[IS/DS]. Use both PID0 and PID1 so that the shadow PIDs for the right mode can be selected, that correspond both to guest TID = zero and guest TID = guest PID. This allows us to significantly reduce the frequency of needing to invalidate the entire TLB. When the guest mode or PID changes, we just update the host PID0/PID1. And since the allocation of shadow PIDs is global, multiple guests can share the TLB without conflict. Note that KVM does not yet support the guest setting PID1 or PID2 to a value other than zero. This will need to be fixed for nested KVM to work. Until then, we enforce the requirement for guest PID1/PID2 to stay zero by failing the emulation if the guest tries to set them to something else. Signed-off-by: Liu Yu <yu.liu@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com> Signed-off-by: Alexander Graf <agraf@suse.de>
85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
/*
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* Copyright (C) 2008-2011 Freescale Semiconductor, Inc. All rights reserved.
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*
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* Author: Yu Liu, <yu.liu@freescale.com>
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*
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* Description:
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* This file is derived from arch/powerpc/include/asm/kvm_44x.h,
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* by Hollis Blanchard <hollisb@us.ibm.com>.
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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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#ifndef __ASM_KVM_E500_H__
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#define __ASM_KVM_E500_H__
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#include <linux/kvm_host.h>
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#define BOOKE_INTERRUPT_SIZE 36
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#define E500_PID_NUM 3
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#define E500_TLB_NUM 2
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struct tlbe{
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u32 mas1;
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u32 mas2;
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u32 mas3;
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u32 mas7;
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};
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#define E500_TLB_VALID 1
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#define E500_TLB_DIRTY 2
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struct tlbe_priv {
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pfn_t pfn;
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unsigned int flags; /* E500_TLB_* */
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};
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struct vcpu_id_table;
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struct kvmppc_vcpu_e500 {
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/* Unmodified copy of the guest's TLB. */
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struct tlbe *gtlb_arch[E500_TLB_NUM];
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/* KVM internal information associated with each guest TLB entry */
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struct tlbe_priv *gtlb_priv[E500_TLB_NUM];
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unsigned int gtlb_size[E500_TLB_NUM];
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unsigned int gtlb_nv[E500_TLB_NUM];
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u32 host_pid[E500_PID_NUM];
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u32 pid[E500_PID_NUM];
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u32 svr;
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u32 mas0;
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u32 mas1;
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u32 mas2;
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u32 mas3;
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u32 mas4;
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u32 mas5;
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u32 mas6;
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u32 mas7;
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/* vcpu id table */
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struct vcpu_id_table *idt;
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u32 l1csr0;
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u32 l1csr1;
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u32 hid0;
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u32 hid1;
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u32 tlb0cfg;
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u32 tlb1cfg;
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u64 mcar;
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struct kvm_vcpu vcpu;
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};
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static inline struct kvmppc_vcpu_e500 *to_e500(struct kvm_vcpu *vcpu)
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{
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return container_of(vcpu, struct kvmppc_vcpu_e500, vcpu);
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}
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#endif /* __ASM_KVM_E500_H__ */
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