mirror of
https://github.com/projectacrn/acrn-hypervisor.git
synced 2025-05-07 07:56:56 +00:00
2ff7bf826e
there are data transfer between guest(GPA) & hv(HPA), especially for hypercall from guest. guest should make sure these GPAs are address continous, but hv cannot assure HPAs which mapped to these GPAs are address continous, for example, after enable hugetlb, a contious GPA range could come from two different 2M pages. this patch is handling such case by doing gpa page walking during copy_from_vm & copy_to_vm. Signed-off-by: Jason Chen CJ <jason.cj.chen@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
147 lines
4.5 KiB
C
147 lines
4.5 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef GUEST_H
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#define GUEST_H
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/* Defines for VM Launch and Resume */
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#define VM_RESUME 0
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#define VM_LAUNCH 1
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#define ACRN_DBG_PTIRQ 6
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#define ACRN_DBG_IRQ 6
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#ifndef ASSEMBLER
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#define foreach_vcpu(idx, vm, vcpu) \
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for (idx = 0, vcpu = vm->hw.vcpu_array[idx]; \
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(idx < vm->hw.num_vcpus) & (vcpu != NULL); \
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idx++, vcpu = vm->hw.vcpu_array[idx])
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/* the index is matched with emulated msrs array*/
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enum {
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IDX_TSC_DEADLINE,
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IDX_BIOS_UPDT_TRIG,
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IDX_BIOS_SIGN_ID,
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IDX_TSC,
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IDX_MAX_MSR
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};
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struct vhm_request;
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int acrn_insert_request_wait(struct vcpu *vcpu, struct vhm_request *req);
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int get_req_info(char *str, int str_max);
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/*
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* VCPU related APIs
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*/
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#define ACRN_REQUEST_EVENT 0
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#define ACRN_REQUEST_EXTINT 1
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#define ACRN_REQUEST_NMI 2
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#define ACRN_REQUEST_GP 3
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#define ACRN_REQUEST_TMR_UPDATE 4
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#define ACRN_REQUEST_TLB_FLUSH 5
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#define E820_MAX_ENTRIES 32
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struct e820_mem_params {
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uint64_t mem_bottom;
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uint64_t mem_top;
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uint64_t total_mem_size;
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uint64_t max_ram_blk_base; /* used for the start address of UOS */
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uint64_t max_ram_blk_size;
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};
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int prepare_vm0_memmap_and_e820(struct vm *vm);
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/* Definition for a mem map lookup */
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struct vm_lu_mem_map {
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struct list_head list; /* EPT mem map lookup list*/
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void *hpa; /* Host physical start address of the map*/
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void *gpa; /* Guest physical start address of the map */
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uint64_t size; /* Size of map */
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};
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enum vm_cpu_mode {
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CPU_MODE_REAL,
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CPU_MODE_PROTECTED,
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CPU_MODE_COMPATIBILITY, /* IA-32E mode (CS.L = 0) */
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CPU_MODE_64BIT, /* IA-32E mode (CS.L = 1) */
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};
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enum vm_paging_mode {
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PAGING_MODE_FLAT,
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PAGING_MODE_32,
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PAGING_MODE_PAE,
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PAGING_MODE_64,
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};
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/*
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* VM related APIs
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*/
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bool is_vm0(struct vm *vm);
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bool vm_lapic_disabled(struct vm *vm);
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uint64_t vcpumask2pcpumask(struct vm *vm, uint64_t vdmask);
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uint64_t gva2gpa(struct vm *vm, uint64_t cr3, uint64_t gva);
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void vm_gva2gpa(struct vcpu *vcpu, uint64_t gla, uint64_t *gpa);
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struct vcpu *get_primary_vcpu(struct vm *vm);
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struct vcpu *vcpu_from_vid(struct vm *vm, int vcpu_id);
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struct vcpu *vcpu_from_pid(struct vm *vm, int pcpu_id);
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void init_e820(void);
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void obtain_e820_mem_info(void);
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extern uint32_t e820_entries;
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extern struct e820_entry e820[E820_MAX_ENTRIES];
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extern uint32_t boot_regs[];
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extern struct e820_mem_params e820_mem;
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int rdmsr_vmexit_handler(struct vcpu *vcpu);
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int wrmsr_vmexit_handler(struct vcpu *vcpu);
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void init_msr_emulation(struct vcpu *vcpu);
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extern const char vm_exit[];
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int vmx_vmrun(struct run_context *context, int ops, int ibrs);
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int load_guest(struct vm *vm, struct vcpu *vcpu);
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int general_sw_loader(struct vm *vm, struct vcpu *vcpu);
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typedef int (*vm_sw_loader_t)(struct vm *, struct vcpu *);
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extern vm_sw_loader_t vm_sw_loader;
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int copy_from_vm(struct vm *vm, void *h_ptr, uint64_t gpa, uint32_t size);
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int copy_to_vm(struct vm *vm, void *h_ptr, uint64_t gpa, uint32_t size);
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#endif /* !ASSEMBLER */
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#endif /* GUEST_H*/
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