forked from Minki/linux
a917f7af39
1. Increase the size of data area to 64M 2. Support more vcpus and memory, 128 vcpus and 256G memory are supported for guests. 3. Add the boundary check for memory and vcpu allocation. With this patch, kvm guest's data area looks as follow: * * +----------------------+ ------- KVM_VM_DATA_SIZE * | vcpu[n]'s data | | ___________________KVM_STK_OFFSET * | | | / | * | .......... | | /vcpu's struct&stack | * | .......... | | /---------------------|---- 0 * | vcpu[5]'s data | | / vpd | * | vcpu[4]'s data | |/-----------------------| * | vcpu[3]'s data | / vtlb | * | vcpu[2]'s data | /|------------------------| * | vcpu[1]'s data |/ | vhpt | * | vcpu[0]'s data |____________________________| * +----------------------+ | * | memory dirty log | | * +----------------------+ | * | vm's data struct | | * +----------------------+ | * | | | * | | | * | | | * | | | * | | | * | | | * | | | * | vm's p2m table | | * | | | * | | | * | | | | * vm's data->| | | | * +----------------------+ ------- 0 * To support large memory, needs to increase the size of p2m. * To support more vcpus, needs to ensure it has enough space to * hold vcpus' data. */ Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@redhat.com>
95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
#ifndef __KVM_IA64_MISC_H
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#define __KVM_IA64_MISC_H
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#include <linux/kvm_host.h>
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/*
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* misc.h
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* Copyright (C) 2007, Intel Corporation.
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* Xiantao Zhang (xiantao.zhang@intel.com)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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*
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*/
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/*
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*Return p2m base address at host side!
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*/
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static inline uint64_t *kvm_host_get_pmt(struct kvm *kvm)
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{
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return (uint64_t *)(kvm->arch.vm_base +
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offsetof(struct kvm_vm_data, kvm_p2m));
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}
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static inline void kvm_set_pmt_entry(struct kvm *kvm, gfn_t gfn,
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u64 paddr, u64 mem_flags)
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{
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uint64_t *pmt_base = kvm_host_get_pmt(kvm);
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unsigned long pte;
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pte = PAGE_ALIGN(paddr) | mem_flags;
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pmt_base[gfn] = pte;
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}
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/*Function for translating host address to guest address*/
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static inline void *to_guest(struct kvm *kvm, void *addr)
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{
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return (void *)((unsigned long)(addr) - kvm->arch.vm_base +
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KVM_VM_DATA_BASE);
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}
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/*Function for translating guest address to host address*/
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static inline void *to_host(struct kvm *kvm, void *addr)
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{
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return (void *)((unsigned long)addr - KVM_VM_DATA_BASE
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+ kvm->arch.vm_base);
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}
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/* Get host context of the vcpu */
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static inline union context *kvm_get_host_context(struct kvm_vcpu *vcpu)
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{
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union context *ctx = &vcpu->arch.host;
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return to_guest(vcpu->kvm, ctx);
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}
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/* Get guest context of the vcpu */
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static inline union context *kvm_get_guest_context(struct kvm_vcpu *vcpu)
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{
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union context *ctx = &vcpu->arch.guest;
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return to_guest(vcpu->kvm, ctx);
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}
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/* kvm get exit data from gvmm! */
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static inline struct exit_ctl_data *kvm_get_exit_data(struct kvm_vcpu *vcpu)
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{
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return &vcpu->arch.exit_data;
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}
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/*kvm get vcpu ioreq for kvm module!*/
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static inline struct kvm_mmio_req *kvm_get_vcpu_ioreq(struct kvm_vcpu *vcpu)
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{
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struct exit_ctl_data *p_ctl_data;
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if (vcpu) {
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p_ctl_data = kvm_get_exit_data(vcpu);
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if (p_ctl_data->exit_reason == EXIT_REASON_MMIO_INSTRUCTION)
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return &p_ctl_data->u.ioreq;
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}
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return NULL;
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}
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#endif
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