Commit d657a98e authored by Zhang Xiantao's avatar Zhang Xiantao Committed by Avi Kivity
Browse files

KVM: Portability: Move kvm_vcpu definition back to kvm.h 



This patches moves kvm_vcpu definition to kvm.h, and finally
kvm.h includes x86.h.

Signed-off-by: default avatarZhang Xiantao <xiantao.zhang@intel.com>
Acked-by: default avatarCarsten Otte <cotte@de.ibm.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent 1d737c8a

drivers/kvm/irq.h

+1 −1
Original line number Diff line number Diff line
@@ -26,7 +26,7 @@ 
#include <linux/hrtimer.h>

#include <asm/kvm.h>

#include "iodev.h"

#include "x86.h"

#include "kvm.h"



struct kvm;

struct kvm_vcpu;

drivers/kvm/kvm.h

+8 −105
Original line number Diff line number Diff line
@@ -22,17 +22,13 @@ 


#include "types.h"



#include "x86.h"



#define KVM_MAX_VCPUS 4

#define KVM_ALIAS_SLOTS 4

#define KVM_MEMORY_SLOTS 8

/* memory slots that does not exposed to userspace */

#define KVM_PRIVATE_MEM_SLOTS 4

#define KVM_PERMILLE_MMU_PAGES 20

#define KVM_MIN_ALLOC_MMU_PAGES 64

#define KVM_NUM_MMU_PAGES 1024

#define KVM_MIN_FREE_MMU_PAGES 5

#define KVM_REFILL_PAGES 25

#define KVM_MAX_CPUID_ENTRIES 40



#define KVM_PIO_PAGE_OFFSET 1
@@ -41,111 +37,16 @@ 
 */

#define KVM_REQ_TLB_FLUSH          0



#define NR_PTE_CHAIN_ENTRIES 5



struct kvm_pte_chain {

	u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];

	struct hlist_node link;

};



/*

 * kvm_mmu_page_role, below, is defined as:

 *

 *   bits 0:3 - total guest paging levels (2-4, or zero for real mode)

 *   bits 4:7 - page table level for this shadow (1-4)

 *   bits 8:9 - page table quadrant for 2-level guests

 *   bit   16 - "metaphysical" - gfn is not a real page (huge page/real mode)

 *   bits 17:19 - common access permissions for all ptes in this shadow page

 */

union kvm_mmu_page_role {

	unsigned word;

	struct {

		unsigned glevels : 4;

		unsigned level : 4;

		unsigned quadrant : 2;

		unsigned pad_for_nice_hex_output : 6;

		unsigned metaphysical : 1;

		unsigned access : 3;

	};

};



struct kvm_mmu_page {

	struct list_head link;

	struct hlist_node hash_link;



	/*

	 * The following two entries are used to key the shadow page in the

	 * hash table.

	 */

	gfn_t gfn;

	union kvm_mmu_page_role role;



	u64 *spt;

	/* hold the gfn of each spte inside spt */

	gfn_t *gfns;

	unsigned long slot_bitmap; /* One bit set per slot which has memory

				    * in this shadow page.

				    */

	int multimapped;         /* More than one parent_pte? */

	int root_count;          /* Currently serving as active root */

	union {

		u64 *parent_pte;               /* !multimapped */

		struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */

	};

};



struct kvm_vcpu;

extern struct kmem_cache *kvm_vcpu_cache;



/*

 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level

 * 32-bit).  The kvm_mmu structure abstracts the details of the current mmu

 * mode.

 */

struct kvm_mmu {

	void (*new_cr3)(struct kvm_vcpu *vcpu);

	int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);

	void (*free)(struct kvm_vcpu *vcpu);

	gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);

	void (*prefetch_page)(struct kvm_vcpu *vcpu,

			      struct kvm_mmu_page *page);

	hpa_t root_hpa;

	int root_level;

	int shadow_root_level;



	u64 *pae_root;

};



#define KVM_NR_MEM_OBJS 40



/*

 * We don't want allocation failures within the mmu code, so we preallocate

 * enough memory for a single page fault in a cache.

 */

struct kvm_mmu_memory_cache {

	int nobjs;

	void *objects[KVM_NR_MEM_OBJS];

};



struct kvm_guest_debug {

	int enabled;

	unsigned long bp[4];

	int singlestep;

};



struct kvm_pio_request {

	unsigned long count;

	int cur_count;

	struct page *guest_pages[2];

	unsigned guest_page_offset;

	int in;

	int port;

	int size;

	int string;

	int down;

	int rep;

};



struct kvm_vcpu_stat {

	u32 pf_fixed;

	u32 pf_guest;
@@ -218,6 +119,12 @@ void kvm_io_bus_register_dev(struct kvm_io_bus *bus, 
	struct kvm_vcpu_stat stat;			\

	KVM_VCPU_MMIO



struct kvm_vcpu {

	KVM_VCPU_COMM;



	struct kvm_vcpu_arch arch;

};



struct kvm_mem_alias {

	gfn_t base_gfn;

	unsigned long npages;
@@ -441,8 +348,4 @@ struct kvm_stats_debugfs_item { 
};

extern struct kvm_stats_debugfs_item debugfs_entries[];



#if defined(CONFIG_X86)

#include "x86.h"

#endif



#endif

drivers/kvm/types.h

+13 −0
Original line number Diff line number Diff line
@@ -38,4 +38,17 @@ typedef unsigned long hva_t; 
typedef u64            hpa_t;

typedef unsigned long  hfn_t;



struct kvm_pio_request {

	unsigned long count;

	int cur_count;

	struct page *guest_pages[2];

	unsigned guest_page_offset;

	int in;

	int port;

	int size;

	int string;

	int down;

	int rep;

};



#endif /* __KVM_TYPES_H__ */

drivers/kvm/x86.h

+95 −7
Original line number Diff line number Diff line
@@ -11,8 +11,6 @@ 
#ifndef KVM_X86_H

#define KVM_X86_H



#include "kvm.h"



#include <linux/types.h>

#include <linux/mm.h>
@@ -21,6 +19,8 @@ 


#include <asm/desc.h>



#include "types.h"



#define CR3_PAE_RESERVED_BITS ((X86_CR3_PWT | X86_CR3_PCD) - 1)

#define CR3_NONPAE_RESERVED_BITS ((PAGE_SIZE-1) & ~(X86_CR3_PWT | X86_CR3_PCD))

#define CR3_L_MODE_RESERVED_BITS (CR3_NONPAE_RESERVED_BITS|0xFFFFFF0000000000ULL)
@@ -54,9 +54,19 @@ 


#define IOPL_SHIFT 12



#define KVM_PERMILLE_MMU_PAGES 20

#define KVM_MIN_ALLOC_MMU_PAGES 64

#define KVM_NUM_MMU_PAGES 1024

#define KVM_MIN_FREE_MMU_PAGES 5

#define KVM_REFILL_PAGES 25

#define KVM_MAX_CPUID_ENTRIES 40



extern spinlock_t kvm_lock;

extern struct list_head vm_list;



struct kvm_vcpu;

struct kvm;



enum {

	VCPU_REGS_RAX = 0,

	VCPU_REGS_RCX = 1,
@@ -92,6 +102,89 @@ enum { 


#include "x86_emulate.h"



#define KVM_NR_MEM_OBJS 40



/*

 * We don't want allocation failures within the mmu code, so we preallocate

 * enough memory for a single page fault in a cache.

 */

struct kvm_mmu_memory_cache {

	int nobjs;

	void *objects[KVM_NR_MEM_OBJS];

};



#define NR_PTE_CHAIN_ENTRIES 5



struct kvm_pte_chain {

	u64 *parent_ptes[NR_PTE_CHAIN_ENTRIES];

	struct hlist_node link;

};



/*

 * kvm_mmu_page_role, below, is defined as:

 *

 *   bits 0:3 - total guest paging levels (2-4, or zero for real mode)

 *   bits 4:7 - page table level for this shadow (1-4)

 *   bits 8:9 - page table quadrant for 2-level guests

 *   bit   16 - "metaphysical" - gfn is not a real page (huge page/real mode)

 *   bits 17:19 - common access permissions for all ptes in this shadow page

 */

union kvm_mmu_page_role {

	unsigned word;

	struct {

		unsigned glevels : 4;

		unsigned level : 4;

		unsigned quadrant : 2;

		unsigned pad_for_nice_hex_output : 6;

		unsigned metaphysical : 1;

		unsigned access : 3;

	};

};



struct kvm_mmu_page {

	struct list_head link;

	struct hlist_node hash_link;



	/*

	 * The following two entries are used to key the shadow page in the

	 * hash table.

	 */

	gfn_t gfn;

	union kvm_mmu_page_role role;



	u64 *spt;

	/* hold the gfn of each spte inside spt */

	gfn_t *gfns;

	unsigned long slot_bitmap; /* One bit set per slot which has memory

				    * in this shadow page.

				    */

	int multimapped;         /* More than one parent_pte? */

	int root_count;          /* Currently serving as active root */

	union {

		u64 *parent_pte;               /* !multimapped */

		struct hlist_head parent_ptes; /* multimapped, kvm_pte_chain */

	};

};



/*

 * x86 supports 3 paging modes (4-level 64-bit, 3-level 64-bit, and 2-level

 * 32-bit).  The kvm_mmu structure abstracts the details of the current mmu

 * mode.

 */

struct kvm_mmu {

	void (*new_cr3)(struct kvm_vcpu *vcpu);

	int (*page_fault)(struct kvm_vcpu *vcpu, gva_t gva, u32 err);

	void (*free)(struct kvm_vcpu *vcpu);

	gpa_t (*gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t gva);

	void (*prefetch_page)(struct kvm_vcpu *vcpu,

			      struct kvm_mmu_page *page);

	hpa_t root_hpa;

	int root_level;

	int shadow_root_level;



	u64 *pae_root;

};



struct kvm_vcpu_arch {

	u64 host_tsc;

	int interrupt_window_open;
@@ -162,11 +255,6 @@ struct kvm_vcpu_arch { 
	struct x86_emulate_ctxt emulate_ctxt;

};



struct kvm_vcpu {

	KVM_VCPU_COMM;



	struct kvm_vcpu_arch arch;

};



struct descriptor_table {

	u16 limit;

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