874 lines
25 KiB
C
874 lines
25 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 _ASM_X86_KVM_HOST_H
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#define _ASM_X86_KVM_HOST_H
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#include <linux/types.h>
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#include <linux/mm.h>
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#include <linux/mmu_notifier.h>
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#include <linux/tracepoint.h>
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#include <linux/cpumask.h>
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#include <linux/kvm.h>
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#include <linux/kvm_para.h>
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#include <linux/kvm_types.h>
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#include <asm/pvclock-abi.h>
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#include <asm/desc.h>
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#include <asm/mtrr.h>
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#include <asm/msr-index.h>
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#define KVM_MAX_VCPUS 64
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#define KVM_MEMORY_SLOTS 32
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/* memory slots that does not exposed to userspace */
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#define KVM_PRIVATE_MEM_SLOTS 4
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#define KVM_MMIO_SIZE 16
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#define KVM_PIO_PAGE_OFFSET 1
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#define KVM_COALESCED_MMIO_PAGE_OFFSET 2
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#define CR0_RESERVED_BITS \
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(~(unsigned long)(X86_CR0_PE | X86_CR0_MP | X86_CR0_EM | X86_CR0_TS \
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| X86_CR0_ET | X86_CR0_NE | X86_CR0_WP | X86_CR0_AM \
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| X86_CR0_NW | X86_CR0_CD | X86_CR0_PG))
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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 | \
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0xFFFFFF0000000000ULL)
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#define CR4_RESERVED_BITS \
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(~(unsigned long)(X86_CR4_VME | X86_CR4_PVI | X86_CR4_TSD | X86_CR4_DE\
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| X86_CR4_PSE | X86_CR4_PAE | X86_CR4_MCE \
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| X86_CR4_PGE | X86_CR4_PCE | X86_CR4_OSFXSR \
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| X86_CR4_OSXSAVE \
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| X86_CR4_OSXMMEXCPT | X86_CR4_VMXE))
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#define CR8_RESERVED_BITS (~(unsigned long)X86_CR8_TPR)
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#define INVALID_PAGE (~(hpa_t)0)
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#define VALID_PAGE(x) ((x) != INVALID_PAGE)
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#define UNMAPPED_GVA (~(gpa_t)0)
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/* KVM Hugepage definitions for x86 */
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#define KVM_NR_PAGE_SIZES 3
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#define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 9)
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#define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x))
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#define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x))
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#define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1))
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#define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE)
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#define DE_VECTOR 0
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#define DB_VECTOR 1
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#define BP_VECTOR 3
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#define OF_VECTOR 4
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#define BR_VECTOR 5
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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 MF_VECTOR 16
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#define MC_VECTOR 18
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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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#define KVM_PERMILLE_MMU_PAGES 20
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#define KVM_MIN_ALLOC_MMU_PAGES 64
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#define KVM_MMU_HASH_SHIFT 10
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#define KVM_NUM_MMU_PAGES (1 << KVM_MMU_HASH_SHIFT)
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#define KVM_MIN_FREE_MMU_PAGES 5
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#define KVM_REFILL_PAGES 25
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#define KVM_MAX_CPUID_ENTRIES 80
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#define KVM_NR_FIXED_MTRR_REGION 88
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#define KVM_NR_VAR_MTRR 8
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#define ASYNC_PF_PER_VCPU 64
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extern raw_spinlock_t kvm_lock;
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extern struct list_head vm_list;
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struct kvm_vcpu;
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struct kvm;
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struct kvm_async_pf;
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enum kvm_reg {
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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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VCPU_REGS_RIP,
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NR_VCPU_REGS
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};
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enum kvm_reg_ex {
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VCPU_EXREG_PDPTR = NR_VCPU_REGS,
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VCPU_EXREG_CR3,
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VCPU_EXREG_RFLAGS,
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VCPU_EXREG_CPL,
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VCPU_EXREG_SEGMENTS,
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};
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enum {
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VCPU_SREG_ES,
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VCPU_SREG_CS,
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VCPU_SREG_SS,
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VCPU_SREG_DS,
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VCPU_SREG_FS,
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VCPU_SREG_GS,
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VCPU_SREG_TR,
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VCPU_SREG_LDTR,
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};
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#include <asm/kvm_emulate.h>
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#define KVM_NR_MEM_OBJS 40
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#define KVM_NR_DB_REGS 4
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#define DR6_BD (1 << 13)
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#define DR6_BS (1 << 14)
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#define DR6_FIXED_1 0xffff0ff0
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#define DR6_VOLATILE 0x0000e00f
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#define DR7_BP_EN_MASK 0x000000ff
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#define DR7_GE (1 << 9)
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#define DR7_GD (1 << 13)
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#define DR7_FIXED_1 0x00000400
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#define DR7_VOLATILE 0xffff23ff
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/*
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* We don't want allocation failures within the mmu code, so we preallocate
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* enough memory for a single page fault in a cache.
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*/
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struct kvm_mmu_memory_cache {
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int nobjs;
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void *objects[KVM_NR_MEM_OBJS];
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};
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#define NR_PTE_CHAIN_ENTRIES 5
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struct kvm_pte_chain {
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u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];
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struct hlist_node link;
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};
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/*
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* kvm_mmu_page_role, below, is defined as:
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*
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* bits 0:3 - total guest paging levels (2-4, or zero for real mode)
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* bits 4:7 - page table level for this shadow (1-4)
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* bits 8:9 - page table quadrant for 2-level guests
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* bit 16 - direct mapping of virtual to physical mapping at gfn
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* used for real mode and two-dimensional paging
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* bits 17:19 - common access permissions for all ptes in this shadow page
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*/
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union kvm_mmu_page_role {
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unsigned word;
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struct {
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unsigned level:4;
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unsigned cr4_pae:1;
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unsigned quadrant:2;
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unsigned pad_for_nice_hex_output:6;
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unsigned direct:1;
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unsigned access:3;
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unsigned invalid:1;
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unsigned nxe:1;
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unsigned cr0_wp:1;
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};
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};
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struct kvm_mmu_page {
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struct list_head link;
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struct hlist_node hash_link;
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/*
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* The following two entries are used to key the shadow page in the
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* hash table.
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*/
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gfn_t gfn;
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union kvm_mmu_page_role role;
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u64 *spt;
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/* hold the gfn of each spte inside spt */
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gfn_t *gfns;
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/*
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* One bit set per slot which has memory
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* in this shadow page.
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*/
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DECLARE_BITMAP(slot_bitmap, KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS);
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bool unsync;
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int root_count; /* Currently serving as active root */
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unsigned int unsync_children;
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unsigned long parent_ptes; /* Reverse mapping for parent_pte */
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DECLARE_BITMAP(unsync_child_bitmap, 512);
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};
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struct kvm_pv_mmu_op_buffer {
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void *ptr;
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unsigned len;
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unsigned processed;
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char buf[512] __aligned(sizeof(long));
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};
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struct kvm_pio_request {
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unsigned long count;
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int in;
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int port;
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int size;
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};
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/*
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* x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level
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* 32-bit). The kvm_mmu structure abstracts the details of the current mmu
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* mode.
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*/
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struct kvm_mmu {
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void (*new_cr3)(struct kvm_vcpu *vcpu);
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void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long root);
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unsigned long (*get_cr3)(struct kvm_vcpu *vcpu);
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int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err,
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bool prefault);
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void (*inject_page_fault)(struct kvm_vcpu *vcpu,
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struct x86_exception *fault);
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void (*free)(struct kvm_vcpu *vcpu);
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gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva, u32 access,
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struct x86_exception *exception);
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gpa_t (*translate_gpa)(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access);
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void (*prefetch_page)(struct kvm_vcpu *vcpu,
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struct kvm_mmu_page *page);
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int (*sync_page)(struct kvm_vcpu *vcpu,
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struct kvm_mmu_page *sp);
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void (*invlpg)(struct kvm_vcpu *vcpu, gva_t gva);
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void (*update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
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u64 *spte, const void *pte);
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hpa_t root_hpa;
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int root_level;
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int shadow_root_level;
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union kvm_mmu_page_role base_role;
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bool direct_map;
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u64 *pae_root;
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u64 *lm_root;
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u64 rsvd_bits_mask[2][4];
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bool nx;
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u64 pdptrs[4]; /* pae */
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};
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struct kvm_vcpu_arch {
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/*
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* rip and regs accesses must go through
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* kvm_{register,rip}_{read,write} functions.
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*/
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unsigned long regs[NR_VCPU_REGS];
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u32 regs_avail;
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u32 regs_dirty;
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unsigned long cr0;
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unsigned long cr0_guest_owned_bits;
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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 cr4_guest_owned_bits;
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unsigned long cr8;
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u32 hflags;
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u64 efer;
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u64 apic_base;
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struct kvm_lapic *apic; /* kernel irqchip context */
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int32_t apic_arb_prio;
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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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bool tpr_access_reporting;
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/*
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* Paging state of the vcpu
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*
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* If the vcpu runs in guest mode with two level paging this still saves
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* the paging mode of the l1 guest. This context is always used to
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* handle faults.
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*/
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struct kvm_mmu mmu;
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/*
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* Paging state of an L2 guest (used for nested npt)
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*
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* This context will save all necessary information to walk page tables
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* of the an L2 guest. This context is only initialized for page table
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* walking and not for faulting since we never handle l2 page faults on
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* the host.
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*/
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struct kvm_mmu nested_mmu;
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/*
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* Pointer to the mmu context currently used for
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* gva_to_gpa translations.
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*/
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struct kvm_mmu *walk_mmu;
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/* only needed in kvm_pv_mmu_op() path, but it's hot so
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* put it here to avoid allocation */
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struct kvm_pv_mmu_op_buffer mmu_op_buffer;
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struct kvm_mmu_memory_cache mmu_pte_list_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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gfn_t last_pte_gfn;
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struct fpu guest_fpu;
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u64 xcr0;
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struct kvm_pio_request pio;
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void *pio_data;
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u8 event_exit_inst_len;
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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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bool reinject;
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u8 nr;
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u32 error_code;
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} exception;
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struct kvm_queued_interrupt {
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bool pending;
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bool soft;
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u8 nr;
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} interrupt;
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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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bool emulate_regs_need_sync_to_vcpu;
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bool emulate_regs_need_sync_from_vcpu;
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gpa_t time;
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struct pvclock_vcpu_time_info hv_clock;
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unsigned int hw_tsc_khz;
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unsigned int time_offset;
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struct page *time_page;
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u64 last_guest_tsc;
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u64 last_kernel_ns;
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u64 last_tsc_nsec;
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u64 last_tsc_write;
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u32 virtual_tsc_khz;
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bool tsc_catchup;
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u32 tsc_catchup_mult;
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s8 tsc_catchup_shift;
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bool nmi_pending;
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bool nmi_injected;
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struct mtrr_state_type mtrr_state;
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u32 pat;
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int switch_db_regs;
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unsigned long db[KVM_NR_DB_REGS];
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unsigned long dr6;
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unsigned long dr7;
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unsigned long eff_db[KVM_NR_DB_REGS];
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u64 mcg_cap;
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u64 mcg_status;
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u64 mcg_ctl;
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u64 *mce_banks;
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/* used for guest single stepping over the given code position */
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unsigned long singlestep_rip;
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/* fields used by HYPER-V emulation */
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u64 hv_vapic;
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cpumask_var_t wbinvd_dirty_mask;
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struct {
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bool halted;
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gfn_t gfns[roundup_pow_of_two(ASYNC_PF_PER_VCPU)];
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struct gfn_to_hva_cache data;
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u64 msr_val;
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u32 id;
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bool send_user_only;
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} apf;
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};
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struct kvm_arch {
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unsigned int n_used_mmu_pages;
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unsigned int n_requested_mmu_pages;
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unsigned int n_max_mmu_pages;
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unsigned int indirect_shadow_pages;
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atomic_t invlpg_counter;
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struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
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/*
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* Hash table of struct kvm_mmu_page.
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*/
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struct list_head active_mmu_pages;
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struct list_head assigned_dev_head;
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struct iommu_domain *iommu_domain;
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int iommu_flags;
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struct kvm_pic *vpic;
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struct kvm_ioapic *vioapic;
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struct kvm_pit *vpit;
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int vapics_in_nmi_mode;
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unsigned int tss_addr;
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struct page *apic_access_page;
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gpa_t wall_clock;
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struct page *ept_identity_pagetable;
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bool ept_identity_pagetable_done;
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gpa_t ept_identity_map_addr;
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unsigned long irq_sources_bitmap;
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s64 kvmclock_offset;
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raw_spinlock_t tsc_write_lock;
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u64 last_tsc_nsec;
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u64 last_tsc_offset;
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u64 last_tsc_write;
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struct kvm_xen_hvm_config xen_hvm_config;
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/* fields used by HYPER-V emulation */
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u64 hv_guest_os_id;
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u64 hv_hypercall;
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#ifdef CONFIG_KVM_MMU_AUDIT
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int audit_point;
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#endif
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};
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struct kvm_vm_stat {
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u32 mmu_shadow_zapped;
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u32 mmu_pte_write;
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u32 mmu_pte_updated;
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u32 mmu_pde_zapped;
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u32 mmu_flooded;
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u32 mmu_recycled;
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u32 mmu_cache_miss;
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u32 mmu_unsync;
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u32 remote_tlb_flush;
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u32 lpages;
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};
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struct kvm_vcpu_stat {
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u32 pf_fixed;
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u32 pf_guest;
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u32 tlb_flush;
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u32 invlpg;
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u32 exits;
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u32 io_exits;
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u32 mmio_exits;
|
|
u32 signal_exits;
|
|
u32 irq_window_exits;
|
|
u32 nmi_window_exits;
|
|
u32 halt_exits;
|
|
u32 halt_wakeup;
|
|
u32 request_irq_exits;
|
|
u32 irq_exits;
|
|
u32 host_state_reload;
|
|
u32 efer_reload;
|
|
u32 fpu_reload;
|
|
u32 insn_emulation;
|
|
u32 insn_emulation_fail;
|
|
u32 hypercalls;
|
|
u32 irq_injections;
|
|
u32 nmi_injections;
|
|
};
|
|
|
|
struct x86_instruction_info;
|
|
|
|
struct kvm_x86_ops {
|
|
int (*cpu_has_kvm_support)(void); /* __init */
|
|
int (*disabled_by_bios)(void); /* __init */
|
|
int (*hardware_enable)(void *dummy);
|
|
void (*hardware_disable)(void *dummy);
|
|
void (*check_processor_compatibility)(void *rtn);
|
|
int (*hardware_setup)(void); /* __init */
|
|
void (*hardware_unsetup)(void); /* __exit */
|
|
bool (*cpu_has_accelerated_tpr)(void);
|
|
void (*cpuid_update)(struct kvm_vcpu *vcpu);
|
|
|
|
/* Create, but do not attach this VCPU */
|
|
struct kvm_vcpu *(*vcpu_create)(struct kvm *kvm, unsigned id);
|
|
void (*vcpu_free)(struct kvm_vcpu *vcpu);
|
|
int (*vcpu_reset)(struct kvm_vcpu *vcpu);
|
|
|
|
void (*prepare_guest_switch)(struct kvm_vcpu *vcpu);
|
|
void (*vcpu_load)(struct kvm_vcpu *vcpu, int cpu);
|
|
void (*vcpu_put)(struct kvm_vcpu *vcpu);
|
|
|
|
void (*set_guest_debug)(struct kvm_vcpu *vcpu,
|
|
struct kvm_guest_debug *dbg);
|
|
int (*get_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 *pdata);
|
|
int (*set_msr)(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
|
|
u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg);
|
|
void (*get_segment)(struct kvm_vcpu *vcpu,
|
|
struct kvm_segment *var, int seg);
|
|
int (*get_cpl)(struct kvm_vcpu *vcpu);
|
|
void (*set_segment)(struct kvm_vcpu *vcpu,
|
|
struct kvm_segment *var, int seg);
|
|
void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l);
|
|
void (*decache_cr0_guest_bits)(struct kvm_vcpu *vcpu);
|
|
void (*decache_cr3)(struct kvm_vcpu *vcpu);
|
|
void (*decache_cr4_guest_bits)(struct kvm_vcpu *vcpu);
|
|
void (*set_cr0)(struct kvm_vcpu *vcpu, unsigned long cr0);
|
|
void (*set_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
|
|
int (*set_cr4)(struct kvm_vcpu *vcpu, unsigned long cr4);
|
|
void (*set_efer)(struct kvm_vcpu *vcpu, u64 efer);
|
|
void (*get_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
|
|
void (*set_idt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
|
|
void (*get_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
|
|
void (*set_gdt)(struct kvm_vcpu *vcpu, struct desc_ptr *dt);
|
|
void (*set_dr7)(struct kvm_vcpu *vcpu, unsigned long value);
|
|
void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg);
|
|
unsigned long (*get_rflags)(struct kvm_vcpu *vcpu);
|
|
void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags);
|
|
void (*fpu_activate)(struct kvm_vcpu *vcpu);
|
|
void (*fpu_deactivate)(struct kvm_vcpu *vcpu);
|
|
|
|
void (*tlb_flush)(struct kvm_vcpu *vcpu);
|
|
|
|
void (*run)(struct kvm_vcpu *vcpu);
|
|
int (*handle_exit)(struct kvm_vcpu *vcpu);
|
|
void (*skip_emulated_instruction)(struct kvm_vcpu *vcpu);
|
|
void (*set_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
|
|
u32 (*get_interrupt_shadow)(struct kvm_vcpu *vcpu, int mask);
|
|
void (*patch_hypercall)(struct kvm_vcpu *vcpu,
|
|
unsigned char *hypercall_addr);
|
|
void (*set_irq)(struct kvm_vcpu *vcpu);
|
|
void (*set_nmi)(struct kvm_vcpu *vcpu);
|
|
void (*queue_exception)(struct kvm_vcpu *vcpu, unsigned nr,
|
|
bool has_error_code, u32 error_code,
|
|
bool reinject);
|
|
void (*cancel_injection)(struct kvm_vcpu *vcpu);
|
|
int (*interrupt_allowed)(struct kvm_vcpu *vcpu);
|
|
int (*nmi_allowed)(struct kvm_vcpu *vcpu);
|
|
bool (*get_nmi_mask)(struct kvm_vcpu *vcpu);
|
|
void (*set_nmi_mask)(struct kvm_vcpu *vcpu, bool masked);
|
|
void (*enable_nmi_window)(struct kvm_vcpu *vcpu);
|
|
void (*enable_irq_window)(struct kvm_vcpu *vcpu);
|
|
void (*update_cr8_intercept)(struct kvm_vcpu *vcpu, int tpr, int irr);
|
|
int (*set_tss_addr)(struct kvm *kvm, unsigned int addr);
|
|
int (*get_tdp_level)(void);
|
|
u64 (*get_mt_mask)(struct kvm_vcpu *vcpu, gfn_t gfn, bool is_mmio);
|
|
int (*get_lpage_level)(void);
|
|
bool (*rdtscp_supported)(void);
|
|
void (*adjust_tsc_offset)(struct kvm_vcpu *vcpu, s64 adjustment);
|
|
|
|
void (*set_tdp_cr3)(struct kvm_vcpu *vcpu, unsigned long cr3);
|
|
|
|
void (*set_supported_cpuid)(u32 func, struct kvm_cpuid_entry2 *entry);
|
|
|
|
bool (*has_wbinvd_exit)(void);
|
|
|
|
void (*set_tsc_khz)(struct kvm_vcpu *vcpu, u32 user_tsc_khz);
|
|
void (*write_tsc_offset)(struct kvm_vcpu *vcpu, u64 offset);
|
|
|
|
u64 (*compute_tsc_offset)(struct kvm_vcpu *vcpu, u64 target_tsc);
|
|
|
|
void (*get_exit_info)(struct kvm_vcpu *vcpu, u64 *info1, u64 *info2);
|
|
|
|
int (*check_intercept)(struct kvm_vcpu *vcpu,
|
|
struct x86_instruction_info *info,
|
|
enum x86_intercept_stage stage);
|
|
|
|
const struct trace_print_flags *exit_reasons_str;
|
|
};
|
|
|
|
struct kvm_arch_async_pf {
|
|
u32 token;
|
|
gfn_t gfn;
|
|
unsigned long cr3;
|
|
bool direct_map;
|
|
};
|
|
|
|
extern struct kvm_x86_ops *kvm_x86_ops;
|
|
|
|
int kvm_mmu_module_init(void);
|
|
void kvm_mmu_module_exit(void);
|
|
|
|
void kvm_mmu_destroy(struct kvm_vcpu *vcpu);
|
|
int kvm_mmu_create(struct kvm_vcpu *vcpu);
|
|
int kvm_mmu_setup(struct kvm_vcpu *vcpu);
|
|
void kvm_mmu_set_nonpresent_ptes(u64 trap_pte, u64 notrap_pte);
|
|
void kvm_mmu_set_mask_ptes(u64 user_mask, u64 accessed_mask,
|
|
u64 dirty_mask, u64 nx_mask, u64 x_mask);
|
|
|
|
int kvm_mmu_reset_context(struct kvm_vcpu *vcpu);
|
|
void kvm_mmu_slot_remove_write_access(struct kvm *kvm, int slot);
|
|
void kvm_mmu_zap_all(struct kvm *kvm);
|
|
unsigned int kvm_mmu_calculate_mmu_pages(struct kvm *kvm);
|
|
void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
|
|
|
|
int load_pdptrs(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, unsigned long cr3);
|
|
|
|
int emulator_write_phys(struct kvm_vcpu *vcpu, gpa_t gpa,
|
|
const void *val, int bytes);
|
|
int kvm_pv_mmu_op(struct kvm_vcpu *vcpu, unsigned long bytes,
|
|
gpa_t addr, unsigned long *ret);
|
|
u8 kvm_get_guest_memory_type(struct kvm_vcpu *vcpu, gfn_t gfn);
|
|
|
|
extern bool tdp_enabled;
|
|
|
|
/* control of guest tsc rate supported? */
|
|
extern bool kvm_has_tsc_control;
|
|
/* minimum supported tsc_khz for guests */
|
|
extern u32 kvm_min_guest_tsc_khz;
|
|
/* maximum supported tsc_khz for guests */
|
|
extern u32 kvm_max_guest_tsc_khz;
|
|
|
|
enum emulation_result {
|
|
EMULATE_DONE, /* no further processing */
|
|
EMULATE_DO_MMIO, /* kvm_run filled with mmio request */
|
|
EMULATE_FAIL, /* can't emulate this instruction */
|
|
};
|
|
|
|
#define EMULTYPE_NO_DECODE (1 << 0)
|
|
#define EMULTYPE_TRAP_UD (1 << 1)
|
|
#define EMULTYPE_SKIP (1 << 2)
|
|
int x86_emulate_instruction(struct kvm_vcpu *vcpu, unsigned long cr2,
|
|
int emulation_type, void *insn, int insn_len);
|
|
|
|
static inline int emulate_instruction(struct kvm_vcpu *vcpu,
|
|
int emulation_type)
|
|
{
|
|
return x86_emulate_instruction(vcpu, 0, emulation_type, NULL, 0);
|
|
}
|
|
|
|
void kvm_enable_efer_bits(u64);
|
|
int kvm_get_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 *data);
|
|
int kvm_set_msr(struct kvm_vcpu *vcpu, u32 msr_index, u64 data);
|
|
|
|
struct x86_emulate_ctxt;
|
|
|
|
int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
|
|
void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
|
|
int kvm_emulate_halt(struct kvm_vcpu *vcpu);
|
|
int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
|
|
|
|
void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);
|
|
int kvm_load_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector, int seg);
|
|
|
|
int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
|
|
bool has_error_code, u32 error_code);
|
|
|
|
int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
|
|
int kvm_set_cr3(struct kvm_vcpu *vcpu, unsigned long cr3);
|
|
int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
|
|
int kvm_set_cr8(struct kvm_vcpu *vcpu, unsigned long cr8);
|
|
int kvm_set_dr(struct kvm_vcpu *vcpu, int dr, unsigned long val);
|
|
int kvm_get_dr(struct kvm_vcpu *vcpu, int dr, unsigned long *val);
|
|
unsigned long kvm_get_cr8(struct kvm_vcpu *vcpu);
|
|
void kvm_lmsw(struct kvm_vcpu *vcpu, unsigned long msw);
|
|
void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l);
|
|
int kvm_set_xcr(struct kvm_vcpu *vcpu, u32 index, u64 xcr);
|
|
|
|
int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
|
|
int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data);
|
|
|
|
unsigned long kvm_get_rflags(struct kvm_vcpu *vcpu);
|
|
void kvm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags);
|
|
|
|
void kvm_queue_exception(struct kvm_vcpu *vcpu, unsigned nr);
|
|
void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
|
|
void kvm_requeue_exception(struct kvm_vcpu *vcpu, unsigned nr);
|
|
void kvm_requeue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
|
|
void kvm_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
|
|
int kvm_read_guest_page_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu,
|
|
gfn_t gfn, void *data, int offset, int len,
|
|
u32 access);
|
|
void kvm_propagate_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault);
|
|
bool kvm_require_cpl(struct kvm_vcpu *vcpu, int required_cpl);
|
|
|
|
int kvm_pic_set_irq(void *opaque, int irq, int level);
|
|
|
|
void kvm_inject_nmi(struct kvm_vcpu *vcpu);
|
|
|
|
int fx_init(struct kvm_vcpu *vcpu);
|
|
|
|
void kvm_mmu_flush_tlb(struct kvm_vcpu *vcpu);
|
|
void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
|
|
const u8 *new, int bytes,
|
|
bool guest_initiated);
|
|
int kvm_mmu_unprotect_page_virt(struct kvm_vcpu *vcpu, gva_t gva);
|
|
void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu);
|
|
int kvm_mmu_load(struct kvm_vcpu *vcpu);
|
|
void kvm_mmu_unload(struct kvm_vcpu *vcpu);
|
|
void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu);
|
|
gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva,
|
|
struct x86_exception *exception);
|
|
gpa_t kvm_mmu_gva_to_gpa_fetch(struct kvm_vcpu *vcpu, gva_t gva,
|
|
struct x86_exception *exception);
|
|
gpa_t kvm_mmu_gva_to_gpa_write(struct kvm_vcpu *vcpu, gva_t gva,
|
|
struct x86_exception *exception);
|
|
gpa_t kvm_mmu_gva_to_gpa_system(struct kvm_vcpu *vcpu, gva_t gva,
|
|
struct x86_exception *exception);
|
|
|
|
int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
|
|
|
|
int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
|
|
void *insn, int insn_len);
|
|
void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
|
|
|
|
void kvm_enable_tdp(void);
|
|
void kvm_disable_tdp(void);
|
|
|
|
int complete_pio(struct kvm_vcpu *vcpu);
|
|
bool kvm_check_iopl(struct kvm_vcpu *vcpu);
|
|
|
|
static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
|
|
{
|
|
struct page *page = pfn_to_page(shadow_page >> PAGE_SHIFT);
|
|
|
|
return (struct kvm_mmu_page *)page_private(page);
|
|
}
|
|
|
|
static inline u16 kvm_read_ldt(void)
|
|
{
|
|
u16 ldt;
|
|
asm("sldt %0" : "=g"(ldt));
|
|
return ldt;
|
|
}
|
|
|
|
static inline void kvm_load_ldt(u16 sel)
|
|
{
|
|
asm("lldt %0" : : "rm"(sel));
|
|
}
|
|
|
|
#ifdef CONFIG_X86_64
|
|
static inline unsigned long read_msr(unsigned long msr)
|
|
{
|
|
u64 value;
|
|
|
|
rdmsrl(msr, value);
|
|
return value;
|
|
}
|
|
#endif
|
|
|
|
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 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)
|
|
|
|
enum {
|
|
TASK_SWITCH_CALL = 0,
|
|
TASK_SWITCH_IRET = 1,
|
|
TASK_SWITCH_JMP = 2,
|
|
TASK_SWITCH_GATE = 3,
|
|
};
|
|
|
|
#define HF_GIF_MASK (1 << 0)
|
|
#define HF_HIF_MASK (1 << 1)
|
|
#define HF_VINTR_MASK (1 << 2)
|
|
#define HF_NMI_MASK (1 << 3)
|
|
#define HF_IRET_MASK (1 << 4)
|
|
#define HF_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */
|
|
|
|
/*
|
|
* Hardware virtualization extension instructions may fault if a
|
|
* reboot turns off virtualization while processes are running.
|
|
* Trap the fault and ignore the instruction if that happens.
|
|
*/
|
|
asmlinkage void kvm_spurious_fault(void);
|
|
extern bool kvm_rebooting;
|
|
|
|
#define ____kvm_handle_fault_on_reboot(insn, cleanup_insn) \
|
|
"666: " insn "\n\t" \
|
|
"668: \n\t" \
|
|
".pushsection .fixup, \"ax\" \n" \
|
|
"667: \n\t" \
|
|
cleanup_insn "\n\t" \
|
|
"cmpb $0, kvm_rebooting \n\t" \
|
|
"jne 668b \n\t" \
|
|
__ASM_SIZE(push) " $666b \n\t" \
|
|
"call kvm_spurious_fault \n\t" \
|
|
".popsection \n\t" \
|
|
".pushsection __ex_table, \"a\" \n\t" \
|
|
_ASM_PTR " 666b, 667b \n\t" \
|
|
".popsection"
|
|
|
|
#define __kvm_handle_fault_on_reboot(insn) \
|
|
____kvm_handle_fault_on_reboot(insn, "")
|
|
|
|
#define KVM_ARCH_WANT_MMU_NOTIFIER
|
|
int kvm_unmap_hva(struct kvm *kvm, unsigned long hva);
|
|
int kvm_age_hva(struct kvm *kvm, unsigned long hva);
|
|
int kvm_test_age_hva(struct kvm *kvm, unsigned long hva);
|
|
void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte);
|
|
int cpuid_maxphyaddr(struct kvm_vcpu *vcpu);
|
|
int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu);
|
|
int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu);
|
|
int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
|
|
|
|
void kvm_define_shared_msr(unsigned index, u32 msr);
|
|
void kvm_set_shared_msr(unsigned index, u64 val, u64 mask);
|
|
|
|
bool kvm_is_linear_rip(struct kvm_vcpu *vcpu, unsigned long linear_rip);
|
|
|
|
void kvm_arch_async_page_not_present(struct kvm_vcpu *vcpu,
|
|
struct kvm_async_pf *work);
|
|
void kvm_arch_async_page_present(struct kvm_vcpu *vcpu,
|
|
struct kvm_async_pf *work);
|
|
void kvm_arch_async_page_ready(struct kvm_vcpu *vcpu,
|
|
struct kvm_async_pf *work);
|
|
bool kvm_arch_can_inject_async_page_present(struct kvm_vcpu *vcpu);
|
|
extern bool kvm_find_async_pf_gfn(struct kvm_vcpu *vcpu, gfn_t gfn);
|
|
|
|
void kvm_complete_insn_gp(struct kvm_vcpu *vcpu, int err);
|
|
|
|
#endif /* _ASM_X86_KVM_HOST_H */
|