forked from luck/tmp_suning_uos_patched
519 lines
13 KiB
C
519 lines
13 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 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 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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/*
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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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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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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_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;
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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 host_state_reload;
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u32 efer_reload;
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u32 fpu_reload;
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u32 insn_emulation;
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u32 insn_emulation_fail;
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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_vcpu_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_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 remote_tlb_flush;
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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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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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struct kvm_vm_stat stat;
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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) != NULL;
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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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/* 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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void decache_vcpus_on_cpu(int cpu);
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int kvm_init(void *opaque, unsigned int vcpu_size,
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struct module *module);
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void kvm_exit(void);
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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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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_is_error_hva(unsigned long addr);
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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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int kvm_arch_set_memory_region(struct kvm *kvm,
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struct kvm_userspace_memory_region *mem,
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struct kvm_memory_slot old,
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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_clean(struct page *page);
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void kvm_release_page_dirty(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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void kvm_vcpu_block(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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long kvm_arch_dev_ioctl(struct file *filp,
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unsigned int ioctl, unsigned long arg);
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long kvm_arch_vcpu_ioctl(struct file *filp,
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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_dev_ioctl_check_extension(long ext);
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int kvm_get_dirty_log(struct kvm *kvm,
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struct kvm_dirty_log *log, int *is_dirty);
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int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm,
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struct kvm_dirty_log *log);
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int kvm_vm_ioctl_set_memory_region(struct kvm *kvm,
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struct
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kvm_userspace_memory_region *mem,
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int user_alloc);
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long kvm_arch_vm_ioctl(struct file *filp,
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unsigned int ioctl, unsigned long arg);
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void kvm_arch_destroy_vm(struct kvm *kvm);
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int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
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int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu);
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int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
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struct kvm_translation *tr);
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int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
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int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs);
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int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
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struct kvm_sregs *sregs);
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int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
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struct kvm_sregs *sregs);
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int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu,
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struct kvm_debug_guest *dbg);
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int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
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int kvm_arch_init(void *opaque);
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void kvm_arch_exit(void);
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int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
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void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
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void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
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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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struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id);
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int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
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void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
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int kvm_arch_vcpu_reset(struct kvm_vcpu *vcpu);
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void kvm_arch_hardware_enable(void *garbage);
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void kvm_arch_hardware_disable(void *garbage);
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int kvm_arch_hardware_setup(void);
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void kvm_arch_hardware_unsetup(void);
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void kvm_arch_check_processor_compat(void *rtn);
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|
|
|
void kvm_free_physmem(struct kvm *kvm);
|
|
|
|
struct kvm *kvm_arch_create_vm(void);
|
|
void kvm_arch_destroy_vm(struct kvm *kvm);
|
|
|
|
static inline void kvm_guest_enter(void)
|
|
{
|
|
account_system_vtime(current);
|
|
current->flags |= PF_VCPU;
|
|
}
|
|
|
|
static inline void kvm_guest_exit(void)
|
|
{
|
|
account_system_vtime(current);
|
|
current->flags &= ~PF_VCPU;
|
|
}
|
|
|
|
static inline int memslot_id(struct kvm *kvm, struct kvm_memory_slot *slot)
|
|
{
|
|
return slot - kvm->memslots;
|
|
}
|
|
|
|
static inline gpa_t gfn_to_gpa(gfn_t gfn)
|
|
{
|
|
return (gpa_t)gfn << PAGE_SHIFT;
|
|
}
|
|
|
|
enum kvm_stat_kind {
|
|
KVM_STAT_VM,
|
|
KVM_STAT_VCPU,
|
|
};
|
|
|
|
struct kvm_stats_debugfs_item {
|
|
const char *name;
|
|
int offset;
|
|
enum kvm_stat_kind kind;
|
|
struct dentry *dentry;
|
|
};
|
|
extern struct kvm_stats_debugfs_item debugfs_entries[];
|
|
|
|
#endif
|