mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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bb0a2bc2ab
In the current hypervisor hypercall, first all vcpu is allocated to SOS, vcpu's vm field is initialized to vm0. When the vcpu is offlined, vcpu will be paused and vcpu's vm field is set as NULL by DM. When UOS is created, vcpu's vm field is set as UOS's vm. So when vmcall_vmexit_handler is invoked, vcpu's vm filed is always non-NULL. error checking for vm pointer is done in the function "vmcall_vmexit_handler", vmcall_vmexit_handler will guarantee that vm is vm0. So all hypercall functions (these functions is just for handler hypercall, except vmcall_vmexit_handler) don't need to check whether invoking vm is NULL and don't need to check whether invoking vm is vm0 or not. Remove related invoking vm error checking for hypercall handling. V1 --> V2: Add pre-condition for hypercall in the head file. V2 --> V3: Add pre-condition for copy_from_gpa and copy_to_gpa. V3 --> V4: Add pre-condition both in the head file and source file. Tracked-On:#1258 Signed-off-by: Xiangyang Wu <xiangyang.wu@linux.intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
162 lines
4.8 KiB
C
162 lines
4.8 KiB
C
/*
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* Copyright (C) 2018 Intel Corporation. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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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 6U
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#define ACRN_DBG_IRQ 6U
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#ifndef ASSEMBLER
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#include <mmu.h>
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#define foreach_vcpu(idx, vm, vcpu) \
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for ((idx) = 0U, vcpu = vm->hw.vcpu_array[(idx)]; \
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(idx) < vm->hw.num_vcpus; \
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(idx)++, vcpu = vm->hw.vcpu_array[(idx)]) \
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if (vcpu != NULL)
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/* the index is matched with emulated msrs array*/
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#define IDX_TSC_DEADLINE 0U
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#define IDX_BIOS_UPDT_TRIG (IDX_TSC_DEADLINE + 1U)
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#define IDX_BIOS_SIGN_ID (IDX_BIOS_UPDT_TRIG + 1U)
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#define IDX_TSC (IDX_BIOS_SIGN_ID + 1U)
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#define IDX_PAT (IDX_TSC + 1U)
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#define IDX_MAX_MSR (IDX_PAT + 1U)
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/*
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* VCPU related APIs
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*/
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#define ACRN_REQUEST_EXCP 0U
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#define ACRN_REQUEST_EVENT 1U
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#define ACRN_REQUEST_EXTINT 2U
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#define ACRN_REQUEST_NMI 3U
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#define ACRN_REQUEST_TMR_UPDATE 4U
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#define ACRN_REQUEST_EPT_FLUSH 5U
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#define ACRN_REQUEST_TRP_FAULT 6U
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#define ACRN_REQUEST_VPID_FLUSH 7U /* flush vpid tlb */
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#define E820_MAX_ENTRIES 32U
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#define save_segment(seg, SEG_NAME) \
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{ \
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(seg).selector = exec_vmread16(SEG_NAME##_SEL); \
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(seg).base = exec_vmread(SEG_NAME##_BASE); \
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(seg).limit = exec_vmread32(SEG_NAME##_LIMIT); \
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(seg).attr = exec_vmread32(SEG_NAME##_ATTR); \
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}
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#define load_segment(seg, SEG_NAME) \
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{ \
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exec_vmwrite16(SEG_NAME##_SEL, (seg).selector); \
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exec_vmwrite(SEG_NAME##_BASE, (seg).base); \
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exec_vmwrite32(SEG_NAME##_LIMIT, (seg).limit); \
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exec_vmwrite32(SEG_NAME##_ATTR, (seg).attr); \
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}
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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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uint64_t e820_alloc_low_memory(uint32_t size_arg);
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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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/* Use # of paging level to identify paging mode */
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enum vm_paging_mode {
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PAGING_MODE_0_LEVEL = 0U, /* Flat */
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PAGING_MODE_2_LEVEL = 2U, /* 32bit paging, 2-level */
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PAGING_MODE_3_LEVEL = 3U, /* PAE paging, 3-level */
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PAGING_MODE_4_LEVEL = 4U, /* 64bit paging, 4-level */
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PAGING_MODE_NUM,
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};
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/*
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* VM related APIs
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*/
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uint64_t vcpumask2pcpumask(struct vm *vm, uint64_t vdmask);
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int gva2gpa(struct vcpu *vcpu, uint64_t gva, uint64_t *gpa, uint32_t *err_code);
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enum vm_paging_mode get_vcpu_paging_mode(struct vcpu *vcpu);
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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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#ifdef CONFIG_PARTITION_MODE
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/*
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* Default e820 mem map:
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*
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* Assumption is every VM launched by ACRN in partition mode uses 2G of RAM.
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* there is reserved memory of 64K for MPtable and PCI hole of 512MB
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*/
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#define NUM_E820_ENTRIES 5U
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extern const struct e820_entry e820_default_entries[NUM_E820_ENTRIES];
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#endif
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extern uint32_t boot_regs[2];
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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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struct run_context;
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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 *vm, struct vcpu *vcpu);
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extern vm_sw_loader_t vm_sw_loader;
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/* @pre Caller(Guest) should make sure gpa is continuous.
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* - gpa from hypercall input which from kernel stack is gpa continuous, not
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* support kernel stack from vmap
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* - some other gpa from hypercall parameters, VHM should make sure it's
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* continuous
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* @pre Pointer vm is non-NULL
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*/
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int copy_from_gpa(const struct vm *vm, void *h_ptr, uint64_t gpa, uint32_t size);
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/* @pre Caller(Guest) should make sure gpa is continuous.
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* - gpa from hypercall input which from kernel stack is gpa continuous, not
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* support kernel stack from vmap
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* - some other gpa from hypercall parameters, VHM should make sure it's
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* continuous
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* @pre Pointer vm is non-NULL
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*/
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int copy_to_gpa(const struct vm *vm, void *h_ptr, uint64_t gpa, uint32_t size);
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int copy_from_gva(struct vcpu *vcpu, void *h_ptr, uint64_t gva,
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uint32_t size, uint32_t *err_code, uint64_t *fault_addr);
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int copy_to_gva(struct vcpu *vcpu, void *h_ptr, uint64_t gva,
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uint32_t size, uint32_t *err_code, uint64_t *fault_addr);
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uint64_t create_guest_init_gdt(struct vm *vm, uint32_t *limit);
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extern uint8_t vm0_boot_context;
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#endif /* !ASSEMBLER */
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#endif /* GUEST_H*/
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