misc.h
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#ifndef __KVM_IA64_MISC_H
#define __KVM_IA64_MISC_H
#include <linux/kvm_host.h>
/*
* misc.h
* Copyright (C) 2007, Intel Corporation.
* Xiantao Zhang (xiantao.zhang@intel.com)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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, Inc., 59 Temple
* Place - Suite 330, Boston, MA 02111-1307 USA.
*
*/
/*
*Return p2m base address at host side!
*/
static inline uint64_t *kvm_host_get_pmt(struct kvm *kvm)
{
return (uint64_t *)(kvm->arch.vm_base +
offsetof(struct kvm_vm_data, kvm_p2m));
}
static inline void kvm_set_pmt_entry(struct kvm *kvm, gfn_t gfn,
u64 paddr, u64 mem_flags)
{
uint64_t *pmt_base = kvm_host_get_pmt(kvm);
unsigned long pte;
pte = PAGE_ALIGN(paddr) | mem_flags;
pmt_base[gfn] = pte;
}
/*Function for translating host address to guest address*/
static inline void *to_guest(struct kvm *kvm, void *addr)
{
return (void *)((unsigned long)(addr) - kvm->arch.vm_base +
KVM_VM_DATA_BASE);
}
/*Function for translating guest address to host address*/
static inline void *to_host(struct kvm *kvm, void *addr)
{
return (void *)((unsigned long)addr - KVM_VM_DATA_BASE
+ kvm->arch.vm_base);
}
/* Get host context of the vcpu */
static inline union context *kvm_get_host_context(struct kvm_vcpu *vcpu)
{
union context *ctx = &vcpu->arch.host;
return to_guest(vcpu->kvm, ctx);
}
/* Get guest context of the vcpu */
static inline union context *kvm_get_guest_context(struct kvm_vcpu *vcpu)
{
union context *ctx = &vcpu->arch.guest;
return to_guest(vcpu->kvm, ctx);
}
/* kvm get exit data from gvmm! */
static inline struct exit_ctl_data *kvm_get_exit_data(struct kvm_vcpu *vcpu)
{
return &vcpu->arch.exit_data;
}
/*kvm get vcpu ioreq for kvm module!*/
static inline struct kvm_mmio_req *kvm_get_vcpu_ioreq(struct kvm_vcpu *vcpu)
{
struct exit_ctl_data *p_ctl_data;
if (vcpu) {
p_ctl_data = kvm_get_exit_data(vcpu);
if (p_ctl_data->exit_reason == EXIT_REASON_MMIO_INSTRUCTION)
return &p_ctl_data->u.ioreq;
}
return NULL;
}
#endif