mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-01 19:36:48 +07:00
498 lines
14 KiB
C
498 lines
14 KiB
C
#/*
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* Kernel-based Virtual Machine driver for Linux
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*
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* This header defines architecture specific interfaces, x86 version
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef KVM_X86_H
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#define KVM_X86_H
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#include "kvm.h"
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#include "irq.h"
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/kvm.h>
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#include <linux/kvm_para.h>
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#include <asm/desc.h>
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#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)
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#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))
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#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL)
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#define KVM_GUEST_CR0_MASK \
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(X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE \
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| X86_CR0_NW | X86_CR0_CD)
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#define KVM_VM_CR0_ALWAYS_ON \
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(X86_CR0_PG | X86_CR0_PE | X86_CR0_WP | X86_CR0_NE | X86_CR0_TS \
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| X86_CR0_MP)
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#define KVM_GUEST_CR4_MASK \
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(X86_CR4_VME | X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE | X86_CR4_VMXE)
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#define KVM_PMODE_VM_CR4_ALWAYS_ON (X86_CR4_PAE | X86_CR4_VMXE)
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#define KVM_RMODE_VM_CR4_ALWAYS_ON (X86_CR4_VME | X86_CR4_PAE | X86_CR4_VMXE)
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#define INVALID_PAGE (~(hpa_t)0)
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#define UNMAPPED_GVA (~(gpa_t)0)
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#define DE_VECTOR 0
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#define UD_VECTOR 6
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#define NM_VECTOR 7
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#define DF_VECTOR 8
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#define TS_VECTOR 10
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#define NP_VECTOR 11
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#define SS_VECTOR 12
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#define GP_VECTOR 13
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#define PF_VECTOR 14
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#define SELECTOR_TI_MASK (1 << 2)
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#define SELECTOR_RPL_MASK 0x03
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#define IOPL_SHIFT 12
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extern spinlock_t kvm_lock;
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extern struct list_head vm_list;
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enum {
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VCPU_REGS_RAX = 0,
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VCPU_REGS_RCX = 1,
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VCPU_REGS_RDX = 2,
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VCPU_REGS_RBX = 3,
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VCPU_REGS_RSP = 4,
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VCPU_REGS_RBP = 5,
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VCPU_REGS_RSI = 6,
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VCPU_REGS_RDI = 7,
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#ifdef CONFIG_X86_64
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VCPU_REGS_R8 = 8,
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VCPU_REGS_R9 = 9,
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VCPU_REGS_R10 = 10,
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VCPU_REGS_R11 = 11,
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VCPU_REGS_R12 = 12,
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VCPU_REGS_R13 = 13,
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VCPU_REGS_R14 = 14,
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VCPU_REGS_R15 = 15,
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#endif
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NR_VCPU_REGS
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};
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enum {
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VCPU_SREG_CS,
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VCPU_SREG_DS,
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VCPU_SREG_ES,
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VCPU_SREG_FS,
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VCPU_SREG_GS,
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VCPU_SREG_SS,
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VCPU_SREG_TR,
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VCPU_SREG_LDTR,
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};
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#include "x86_emulate.h"
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struct kvm_vcpu {
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KVM_VCPU_COMM;
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u64 host_tsc;
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int interrupt_window_open;
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unsigned long irq_summary; /* bit vector: 1 per word in irq_pending */
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DECLARE_BITMAP(irq_pending, KVM_NR_INTERRUPTS);
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unsigned long regs[NR_VCPU_REGS]; /* for rsp: vcpu_load_rsp_rip() */
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unsigned long rip; /* needs vcpu_load_rsp_rip() */
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unsigned long cr0;
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unsigned long cr2;
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unsigned long cr3;
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unsigned long cr4;
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unsigned long cr8;
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u64 pdptrs[4]; /* pae */
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u64 shadow_efer;
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u64 apic_base;
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struct kvm_lapic *apic; /* kernel irqchip context */
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#define VCPU_MP_STATE_RUNNABLE 0
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#define VCPU_MP_STATE_UNINITIALIZED 1
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#define VCPU_MP_STATE_INIT_RECEIVED 2
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#define VCPU_MP_STATE_SIPI_RECEIVED 3
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#define VCPU_MP_STATE_HALTED 4
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int mp_state;
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int sipi_vector;
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u64 ia32_misc_enable_msr;
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struct kvm_mmu mmu;
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struct kvm_mmu_memory_cache mmu_pte_chain_cache;
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struct kvm_mmu_memory_cache mmu_rmap_desc_cache;
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struct kvm_mmu_memory_cache mmu_page_cache;
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struct kvm_mmu_memory_cache mmu_page_header_cache;
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gfn_t last_pt_write_gfn;
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int last_pt_write_count;
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u64 *last_pte_updated;
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struct i387_fxsave_struct host_fx_image;
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struct i387_fxsave_struct guest_fx_image;
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gva_t mmio_fault_cr2;
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struct kvm_pio_request pio;
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void *pio_data;
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struct kvm_queued_exception {
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bool pending;
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bool has_error_code;
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u8 nr;
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u32 error_code;
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} exception;
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struct {
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int active;
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u8 save_iopl;
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struct kvm_save_segment {
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u16 selector;
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unsigned long base;
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u32 limit;
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u32 ar;
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} tr, es, ds, fs, gs;
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} rmode;
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int halt_request; /* real mode on Intel only */
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int cpuid_nent;
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struct kvm_cpuid_entry2 cpuid_entries[KVM_MAX_CPUID_ENTRIES];
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/* emulate context */
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struct x86_emulate_ctxt emulate_ctxt;
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};
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struct descriptor_table {
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u16 limit;
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unsigned long base;
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} __attribute__((packed));
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struct kvm_x86_ops {
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int (*cpu_has_kvm_support)(void); /* __init */
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int (*disabled_by_bios)(void); /* __init */
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void (*hardware_enable)(void *dummy); /* __init */
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void (*hardware_disable)(void *dummy);
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void (*check_processor_compatibility)(void *rtn);
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int (*hardware_setup)(void); /* __init */
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void (*hardware_unsetup)(void); /* __exit */
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/* Create, but do not attach this VCPU */
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struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
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void (*vcpu_free)(struct kvm_vcpu *vcpu);
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int (*vcpu_reset)(struct kvm_vcpu *vcpu);
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void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
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void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
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void (*vcpu_put)(struct kvm_vcpu *vcpu);
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void (*vcpu_decache)(struct kvm_vcpu *vcpu);
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int (*set_guest_debug)(struct kvm_vcpu *vcpu,
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struct kvm_debug_guest *dbg);
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void (*guest_debug_pre)(struct kvm_vcpu *vcpu);
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int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
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int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
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u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
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void (*get_segment)(struct kvm_vcpu *vcpu,
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struct kvm_segment *var, int seg);
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void (*set_segment)(struct kvm_vcpu *vcpu,
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struct kvm_segment *var, int seg);
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void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
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void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
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void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
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void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
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void (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
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void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
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void (*get_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
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void (*set_idt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
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void (*get_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
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void (*set_gdt)(struct kvm_vcpu *vcpu, struct descriptor_table *dt);
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unsigned long (*get_dr)(struct kvm_vcpu *vcpu, int dr);
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void (*set_dr)(struct kvm_vcpu *vcpu, int dr, unsigned long value,
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int *exception);
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void (*cache_regs)(struct kvm_vcpu *vcpu);
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void (*decache_regs)(struct kvm_vcpu *vcpu);
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unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
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void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
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void (*tlb_flush)(struct kvm_vcpu *vcpu);
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void (*run)(struct kvm_vcpu *vcpu, struct kvm_run *run);
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int (*handle_exit)(struct kvm_run *run, struct kvm_vcpu *vcpu);
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void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
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void (*patch_hypercall)(struct kvm_vcpu *vcpu,
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unsigned char *hypercall_addr);
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int (*get_irq)(struct kvm_vcpu *vcpu);
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void (*set_irq)(struct kvm_vcpu *vcpu, int vec);
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void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
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bool has_error_code, u32 error_code);
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bool (*exception_injected)(struct kvm_vcpu *vcpu);
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void (*inject_pending_irq)(struct kvm_vcpu *vcpu);
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void (*inject_pending_vectors)(struct kvm_vcpu *vcpu,
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struct kvm_run *run);
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int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
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};
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extern struct kvm_x86_ops *kvm_x86_ops;
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int kvm_mmu_module_init(void);
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void kvm_mmu_module_exit(void);
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void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
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int kvm_mmu_create(struct kvm_vcpu *vcpu);
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int kvm_mmu_setup(struct kvm_vcpu *vcpu);
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void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
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int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
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void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
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void kvm_mmu_zap_all(struct kvm *kvm);
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unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
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void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
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enum emulation_result {
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EMULATE_DONE, /* no further processing */
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EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
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EMULATE_FAIL, /* can't emulate this instruction */
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};
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int emulate_instruction(struct kvm_vcpu *vcpu, struct kvm_run *run,
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unsigned long cr2, u16 error_code, int no_decode);
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void kvm_report_emulation_failure(struct kvm_vcpu *cvpu, const char *context);
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void realmode_lgdt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
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void realmode_lidt(struct kvm_vcpu *vcpu, u16 size, unsigned long address);
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void realmode_lmsw(struct kvm_vcpu *vcpu, unsigned long msw,
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unsigned long *rflags);
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unsigned long realmode_get_cr(struct kvm_vcpu *vcpu, int cr);
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void realmode_set_cr(struct kvm_vcpu *vcpu, int cr, unsigned long value,
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unsigned long *rflags);
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int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
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int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
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struct x86_emulate_ctxt;
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int kvm_emulate_pio(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
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int size, unsigned port);
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int kvm_emulate_pio_string(struct kvm_vcpu *vcpu, struct kvm_run *run, int in,
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int size, unsigned long count, int down,
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gva_t address, int rep, unsigned port);
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void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
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int kvm_emulate_halt(struct kvm_vcpu *vcpu);
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int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
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int emulate_clts(struct kvm_vcpu *vcpu);
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int emulator_get_dr(struct x86_emulate_ctxt *ctxt, int dr,
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unsigned long *dest);
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int emulator_set_dr(struct x86_emulate_ctxt *ctxt, int dr,
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unsigned long value);
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void set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
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void set_cr3(struct kvm_vcpu *vcpu, unsigned long cr0);
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void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0);
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void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0);
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unsigned long get_cr8(struct kvm_vcpu *vcpu);
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void lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
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void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
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int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
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int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
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void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
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void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
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void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
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u32 error_code);
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void fx_init(struct kvm_vcpu *vcpu);
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int emulator_read_std(unsigned long addr,
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void *val,
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unsigned int bytes,
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struct kvm_vcpu *vcpu);
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int emulator_write_emulated(unsigned long addr,
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const void *val,
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unsigned int bytes,
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struct kvm_vcpu *vcpu);
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unsigned long segment_base(u16 selector);
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void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
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void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
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const u8 *new, int bytes);
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int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
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void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
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int kvm_mmu_load(struct kvm_vcpu *vcpu);
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void kvm_mmu_unload(struct kvm_vcpu *vcpu);
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int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
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int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
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int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code);
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static inline void kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu)
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{
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if (unlikely(vcpu->kvm->n_free_mmu_pages < KVM_MIN_FREE_MMU_PAGES))
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__kvm_mmu_free_some_pages(vcpu);
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}
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static inline int kvm_mmu_reload(struct kvm_vcpu *vcpu)
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{
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if (likely(vcpu->mmu.root_hpa != INVALID_PAGE))
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return 0;
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return kvm_mmu_load(vcpu);
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}
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static inline int is_long_mode(struct kvm_vcpu *vcpu)
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{
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#ifdef CONFIG_X86_64
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return vcpu->shadow_efer & EFER_LME;
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#else
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return 0;
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#endif
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}
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static inline int is_pae(struct kvm_vcpu *vcpu)
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{
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return vcpu->cr4 & X86_CR4_PAE;
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}
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static inline int is_pse(struct kvm_vcpu *vcpu)
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{
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return vcpu->cr4 & X86_CR4_PSE;
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}
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static inline int is_paging(struct kvm_vcpu *vcpu)
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{
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return vcpu->cr0 & X86_CR0_PG;
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}
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int load_pdptrs(struct kvm_vcpu *vcpu, unsigned long cr3);
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int complete_pio(struct kvm_vcpu *vcpu);
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static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
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{
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struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
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return (struct kvm_mmu_page *)page_private(page);
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}
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static inline u16 read_fs(void)
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{
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u16 seg;
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asm("mov %%fs, %0" : "=g"(seg));
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return seg;
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}
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static inline u16 read_gs(void)
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{
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u16 seg;
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asm("mov %%gs, %0" : "=g"(seg));
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return seg;
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}
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static inline u16 read_ldt(void)
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{
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u16 ldt;
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asm("sldt %0" : "=g"(ldt));
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return ldt;
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}
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static inline void load_fs(u16 sel)
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{
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asm("mov %0, %%fs" : : "rm"(sel));
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}
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static inline void load_gs(u16 sel)
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{
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asm("mov %0, %%gs" : : "rm"(sel));
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}
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#ifndef load_ldt
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static inline void load_ldt(u16 sel)
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{
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asm("lldt %0" : : "rm"(sel));
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}
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#endif
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static inline void get_idt(struct descriptor_table *table)
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{
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asm("sidt %0" : "=m"(*table));
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}
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static inline void get_gdt(struct descriptor_table *table)
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{
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asm("sgdt %0" : "=m"(*table));
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}
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static inline unsigned long read_tr_base(void)
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{
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u16 tr;
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asm("str %0" : "=g"(tr));
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return segment_base(tr);
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}
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#ifdef CONFIG_X86_64
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static inline unsigned long read_msr(unsigned long msr)
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|
{
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|
u64 value;
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|
|
|
rdmsrl(msr, value);
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|
return value;
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|
}
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|
#endif
|
|
|
|
static inline void fx_save(struct i387_fxsave_struct *image)
|
|
{
|
|
asm("fxsave (%0)":: "r" (image));
|
|
}
|
|
|
|
static inline void fx_restore(struct i387_fxsave_struct *image)
|
|
{
|
|
asm("fxrstor (%0)":: "r" (image));
|
|
}
|
|
|
|
static inline void fpu_init(void)
|
|
{
|
|
asm("finit");
|
|
}
|
|
|
|
static inline u32 get_rdx_init_val(void)
|
|
{
|
|
return 0x600; /* P6 family */
|
|
}
|
|
|
|
static inline void kvm_inject_gp(struct kvm_vcpu *vcpu, u32 error_code)
|
|
{
|
|
kvm_queue_exception_e(vcpu, GP_VECTOR, error_code);
|
|
}
|
|
|
|
#define ASM_VMX_VMCLEAR_RAX ".byte 0x66, 0x0f, 0xc7, 0x30"
|
|
#define ASM_VMX_VMLAUNCH ".byte 0x0f, 0x01, 0xc2"
|
|
#define ASM_VMX_VMRESUME ".byte 0x0f, 0x01, 0xc3"
|
|
#define ASM_VMX_VMPTRLD_RAX ".byte 0x0f, 0xc7, 0x30"
|
|
#define ASM_VMX_VMREAD_RDX_RAX ".byte 0x0f, 0x78, 0xd0"
|
|
#define ASM_VMX_VMWRITE_RAX_RDX ".byte 0x0f, 0x79, 0xd0"
|
|
#define ASM_VMX_VMWRITE_RSP_RDX ".byte 0x0f, 0x79, 0xd4"
|
|
#define ASM_VMX_VMXOFF ".byte 0x0f, 0x01, 0xc4"
|
|
#define ASM_VMX_VMXON_RAX ".byte 0xf3, 0x0f, 0xc7, 0x30"
|
|
|
|
#define MSR_IA32_TIME_STAMP_COUNTER 0x010
|
|
|
|
#define TSS_IOPB_BASE_OFFSET 0x66
|
|
#define TSS_BASE_SIZE 0x68
|
|
#define TSS_IOPB_SIZE (65536 / 8)
|
|
#define TSS_REDIRECTION_SIZE (256 / 8)
|
|
#define RMODE_TSS_SIZE (TSS_BASE_SIZE + TSS_REDIRECTION_SIZE + TSS_IOPB_SIZE + 1)
|
|
|
|
static inline int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
|
|
{
|
|
return vcpu->mp_state == VCPU_MP_STATE_RUNNABLE
|
|
|| vcpu->mp_state == VCPU_MP_STATE_SIPI_RECEIVED;
|
|
}
|
|
|
|
#endif
|