forked from luck/tmp_suning_uos_patched
417bc3041f
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
772 lines
21 KiB
C
772 lines
21 KiB
C
#ifndef __KVM_H
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#define __KVM_H
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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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#include <linux/types.h>
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#include <linux/hardirq.h>
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#include <linux/list.h>
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#include <linux/mutex.h>
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#include <linux/spinlock.h>
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#include <linux/signal.h>
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#include <linux/sched.h>
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#include <linux/mm.h>
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#include <linux/preempt.h>
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#include <asm/signal.h>
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#include <linux/kvm.h>
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#include <linux/kvm_para.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 KVM_MAX_VCPUS 4
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#define KVM_ALIAS_SLOTS 4
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#define KVM_MEMORY_SLOTS 8
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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_PERMILLE_MMU_PAGES 20
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#define KVM_MIN_ALLOC_MMU_PAGES 64
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#define KVM_NUM_MMU_PAGES 1024
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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 40
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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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#define KVM_PIO_PAGE_OFFSET 1
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/*
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* vcpu->requests bit members
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*/
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#define KVM_REQ_TLB_FLUSH 0
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/*
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* Address types:
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*
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* gva - guest virtual address
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* gpa - guest physical address
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* gfn - guest frame number
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* hva - host virtual address
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* hpa - host physical address
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* hfn - host frame number
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*/
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typedef unsigned long gva_t;
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typedef u64 gpa_t;
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typedef unsigned long gfn_t;
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typedef unsigned long hva_t;
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typedef u64 hpa_t;
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typedef unsigned long hfn_t;
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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 - "metaphysical" - gfn is not a real page (huge page/real mode)
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* bits 17:19 - "access" - the user, writable, and nx bits of a huge page pde
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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 glevels : 4;
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unsigned level : 4;
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unsigned quadrant : 2;
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unsigned pad_for_nice_hex_output : 6;
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unsigned metaphysical : 1;
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unsigned hugepage_access : 3;
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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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unsigned long slot_bitmap; /* One bit set per slot which has memory
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* in this shadow page.
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*/
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int multimapped; /* More than one parent_pte? */
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int root_count; /* Currently serving as active root */
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union {
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u64 *parent_pte; /* !multimapped */
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struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */
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};
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};
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struct kvm_vcpu;
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extern struct kmem_cache *kvm_vcpu_cache;
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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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int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);
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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);
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void (*prefetch_page)(struct kvm_vcpu *vcpu,
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struct kvm_mmu_page *page);
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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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u64 *pae_root;
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};
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#define KVM_NR_MEM_OBJS 40
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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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/*
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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_guest_debug {
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int enabled;
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unsigned long bp[4];
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int singlestep;
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};
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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_pio_request {
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unsigned long count;
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int cur_count;
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struct page *guest_pages[2];
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unsigned guest_page_offset;
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int in;
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int port;
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int size;
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int string;
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int down;
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int rep;
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};
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struct kvm_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;
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u32 signal_exits;
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u32 irq_window_exits;
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u32 halt_exits;
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u32 halt_wakeup;
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u32 request_irq_exits;
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u32 irq_exits;
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u32 light_exits;
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u32 efer_reload;
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};
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struct kvm_io_device {
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void (*read)(struct kvm_io_device *this,
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gpa_t addr,
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int len,
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void *val);
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void (*write)(struct kvm_io_device *this,
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gpa_t addr,
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int len,
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const void *val);
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int (*in_range)(struct kvm_io_device *this, gpa_t addr);
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void (*destructor)(struct kvm_io_device *this);
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void *private;
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};
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static inline void kvm_iodevice_read(struct kvm_io_device *dev,
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gpa_t addr,
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int len,
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void *val)
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{
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dev->read(dev, addr, len, val);
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}
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static inline void kvm_iodevice_write(struct kvm_io_device *dev,
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gpa_t addr,
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int len,
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const void *val)
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{
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dev->write(dev, addr, len, val);
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}
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static inline int kvm_iodevice_inrange(struct kvm_io_device *dev, gpa_t addr)
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{
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return dev->in_range(dev, addr);
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}
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static inline void kvm_iodevice_destructor(struct kvm_io_device *dev)
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{
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if (dev->destructor)
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dev->destructor(dev);
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}
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/*
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* It would be nice to use something smarter than a linear search, TBD...
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* Thankfully we dont expect many devices to register (famous last words :),
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* so until then it will suffice. At least its abstracted so we can change
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* in one place.
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*/
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struct kvm_io_bus {
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int dev_count;
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#define NR_IOBUS_DEVS 6
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struct kvm_io_device *devs[NR_IOBUS_DEVS];
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};
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void kvm_io_bus_init(struct kvm_io_bus *bus);
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void kvm_io_bus_destroy(struct kvm_io_bus *bus);
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struct kvm_io_device *kvm_io_bus_find_dev(struct kvm_io_bus *bus, gpa_t addr);
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void kvm_io_bus_register_dev(struct kvm_io_bus *bus,
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struct kvm_io_device *dev);
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#ifdef CONFIG_HAS_IOMEM
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#define KVM_VCPU_MMIO \
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int mmio_needed; \
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int mmio_read_completed; \
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int mmio_is_write; \
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int mmio_size; \
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unsigned char mmio_data[8]; \
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gpa_t mmio_phys_addr;
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#else
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#define KVM_VCPU_MMIO
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#endif
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#define KVM_VCPU_COMM \
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struct kvm *kvm; \
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struct preempt_notifier preempt_notifier; \
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int vcpu_id; \
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struct mutex mutex; \
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int cpu; \
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struct kvm_run *run; \
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int guest_mode; \
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unsigned long requests; \
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struct kvm_guest_debug guest_debug; \
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int fpu_active; \
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int guest_fpu_loaded; \
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wait_queue_head_t wq; \
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int sigset_active; \
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sigset_t sigset; \
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struct kvm_stat stat; \
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KVM_VCPU_MMIO
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struct kvm_mem_alias {
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gfn_t base_gfn;
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unsigned long npages;
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gfn_t target_gfn;
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};
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struct kvm_memory_slot {
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gfn_t base_gfn;
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unsigned long npages;
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unsigned long flags;
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unsigned long *rmap;
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unsigned long *dirty_bitmap;
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unsigned long userspace_addr;
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int user_alloc;
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};
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struct kvm {
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struct mutex lock; /* protects everything except vcpus */
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int naliases;
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struct kvm_mem_alias aliases[KVM_ALIAS_SLOTS];
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int nmemslots;
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struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
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KVM_PRIVATE_MEM_SLOTS];
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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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unsigned int n_free_mmu_pages;
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unsigned int n_requested_mmu_pages;
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unsigned int n_alloc_mmu_pages;
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struct hlist_head mmu_page_hash[KVM_NUM_MMU_PAGES];
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struct kvm_vcpu *vcpus[KVM_MAX_VCPUS];
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unsigned long rmap_overflow;
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struct list_head vm_list;
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struct file *filp;
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struct kvm_io_bus mmio_bus;
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struct kvm_io_bus pio_bus;
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struct kvm_pic *vpic;
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struct kvm_ioapic *vioapic;
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int round_robin_prev_vcpu;
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unsigned int tss_addr;
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struct page *apic_access_page;
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};
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static inline struct kvm_pic *pic_irqchip(struct kvm *kvm)
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{
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return kvm->vpic;
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}
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static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
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{
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return kvm->vioapic;
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}
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static inline int irqchip_in_kernel(struct kvm *kvm)
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{
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return pic_irqchip(kvm) != 0;
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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 (*inject_page_fault)(struct kvm_vcpu *vcpu,
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unsigned long addr, u32 err_code);
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void (*inject_gp)(struct kvm_vcpu *vcpu, unsigned err_code);
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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 (*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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/* The guest did something we don't support. */
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#define pr_unimpl(vcpu, fmt, ...) \
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do { \
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if (printk_ratelimit()) \
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printk(KERN_ERR "kvm: %i: cpu%i " fmt, \
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current->tgid, (vcpu)->vcpu_id , ## __VA_ARGS__); \
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} while (0)
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#define kvm_printf(kvm, fmt ...) printk(KERN_DEBUG fmt)
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#define vcpu_printf(vcpu, fmt...) kvm_printf(vcpu->kvm, fmt)
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int kvm_vcpu_init(struct kvm_vcpu *vcpu, struct kvm *kvm, unsigned id);
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void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
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void vcpu_load(struct kvm_vcpu *vcpu);
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void vcpu_put(struct kvm_vcpu *vcpu);
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int kvm_init_x86(struct kvm_x86_ops *ops, unsigned int vcpu_size,
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struct module *module);
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void kvm_exit_x86(void);
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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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void kvm_mmu_change_mmu_pages(struct kvm *kvm, unsigned int kvm_nr_mmu_pages);
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hpa_t gpa_to_hpa(struct kvm *kvm, gpa_t gpa);
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#define HPA_MSB ((sizeof(hpa_t) * 8) - 1)
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#define HPA_ERR_MASK ((hpa_t)1 << HPA_MSB)
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static inline int is_error_hpa(hpa_t hpa) { return hpa >> HPA_MSB; }
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hpa_t gva_to_hpa(struct kvm_vcpu *vcpu, gva_t gva);
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struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva);
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extern struct page *bad_page;
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int is_error_page(struct page *page);
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int kvm_set_memory_region(struct kvm *kvm,
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struct kvm_userspace_memory_region *mem,
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int user_alloc);
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int __kvm_set_memory_region(struct kvm *kvm,
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struct kvm_userspace_memory_region *mem,
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int user_alloc);
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gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn);
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struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
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void kvm_release_page(struct page *page);
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int kvm_read_guest_page(struct kvm *kvm, gfn_t gfn, void *data, int offset,
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int len);
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int kvm_read_guest(struct kvm *kvm, gpa_t gpa, void *data, unsigned long len);
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int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
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int offset, int len);
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int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
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unsigned long len);
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int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
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int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
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struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
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int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
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void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
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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 fx_init(struct kvm_vcpu *vcpu);
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void kvm_resched(struct kvm_vcpu *vcpu);
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void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
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void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
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void kvm_flush_remote_tlbs(struct kvm *kvm);
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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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|
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unsigned long segment_base(u16 selector);
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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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|
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int kvm_emulate_hypercall(struct kvm_vcpu *vcpu);
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|
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int kvm_fix_hypercall(struct kvm_vcpu *vcpu);
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|
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long kvm_arch_dev_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg);
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long kvm_arch_vcpu_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg);
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void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
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void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
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int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
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|
struct
|
|
kvm_userspace_memory_region *mem,
|
|
int user_alloc);
|
|
long kvm_arch_vm_ioctl(struct file *filp,
|
|
unsigned int ioctl, unsigned long arg);
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void kvm_arch_destroy_vm(struct kvm *kvm);
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|
|
__init void kvm_arch_init(void);
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|
|
static inline void kvm_guest_enter(void)
|
|
{
|
|
account_system_vtime(current);
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|
current->flags |= PF_VCPU;
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}
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|
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static inline void kvm_guest_exit(void)
|
|
{
|
|
account_system_vtime(current);
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|
current->flags &= ~PF_VCPU;
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|
}
|
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|
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static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
|
|
{
|
|
return slot - kvm->memslots;
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|
}
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|
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static inline struct kvm_mmu_page *page_header(hpa_t shadow_page)
|
|
{
|
|
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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|
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static inline u16 read_fs(void)
|
|
{
|
|
u16 seg;
|
|
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)
|
|
{
|
|
u16 seg;
|
|
asm("mov %%gs, %0" : "=g"(seg));
|
|
return seg;
|
|
}
|
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|
|
static inline u16 read_ldt(void)
|
|
{
|
|
u16 ldt;
|
|
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)
|
|
{
|
|
asm("mov %0, %%fs" : : "rm"(sel));
|
|
}
|
|
|
|
static inline void load_gs(u16 sel)
|
|
{
|
|
asm("mov %0, %%gs" : : "rm"(sel));
|
|
}
|
|
|
|
#ifndef load_ldt
|
|
static inline void load_ldt(u16 sel)
|
|
{
|
|
asm("lldt %0" : : "rm"(sel));
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|
}
|
|
#endif
|
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|
|
static inline void get_idt(struct descriptor_table *table)
|
|
{
|
|
asm("sidt %0" : "=m"(*table));
|
|
}
|
|
|
|
static inline void get_gdt(struct descriptor_table *table)
|
|
{
|
|
asm("sgdt %0" : "=m"(*table));
|
|
}
|
|
|
|
static inline unsigned long read_tr_base(void)
|
|
{
|
|
u16 tr;
|
|
asm("str %0" : "=g"(tr));
|
|
return segment_base(tr);
|
|
}
|
|
|
|
#ifdef CONFIG_X86_64
|
|
static inline unsigned long read_msr(unsigned long msr)
|
|
{
|
|
u64 value;
|
|
|
|
rdmsrl(msr, value);
|
|
return value;
|
|
}
|
|
#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 */
|
|
}
|
|
|
|
#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)
|
|
|
|
struct kvm_stats_debugfs_item {
|
|
const char *name;
|
|
int offset;
|
|
struct dentry *dentry;
|
|
};
|
|
extern struct kvm_stats_debugfs_item debugfs_entries[];
|
|
|
|
#endif
|