X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Finclude%2Fpalacios%2Fvmm_mem.h;h=f6338dff261ff855c08055457e1e0b9365f33656;hp=83bba614a96c2fd980ef9d3242f663044b464ca3;hb=0e097100a26bc43eb8964734fa43130fc4c71429;hpb=4f7c3b759e3889870c5b5e7d09b3ffcc168e5632 diff --git a/palacios/include/palacios/vmm_mem.h b/palacios/include/palacios/vmm_mem.h index 83bba61..f6338df 100644 --- a/palacios/include/palacios/vmm_mem.h +++ b/palacios/include/palacios/vmm_mem.h @@ -1,5 +1,22 @@ -/* Northwestern University */ -/* (c) 2008, Jack Lange */ +/* + * This file is part of the Palacios Virtual Machine Monitor developed + * by the V3VEE Project with funding from the United States National + * Science Foundation and the Department of Energy. + * + * The V3VEE Project is a joint project between Northwestern University + * and the University of New Mexico. You can find out more at + * http://www.v3vee.org + * + * Copyright (c) 2008, Jack Lange + * Copyright (c) 2008, The V3VEE Project + * All rights reserved. + * + * Author: Jack Lange + * + * This is free software. You are permitted to use, + * redistribute, and modify it as specified in the file "V3VEE_LICENSE". + */ + #ifndef __VMM_MEM_H #define __VMM_MEM_H @@ -11,139 +28,108 @@ #include #include +#include + struct guest_info; -/* - Guest Shadow Host - Virtual Physical Virtual Physical Virtual Physical - OK OK - OK NOK - NOK OK - NOK NOK +// These are the types of physical memory address regions +// from the perspective of the HOST +typedef enum shdw_region_type { + SHDW_REGION_WRITE_HOOK, // This region is mapped as read-only (page faults on write) + SHDW_REGION_FULL_HOOK, // This region is mapped as not present (always generate page faults) + SHDW_REGION_ALLOCATED, // Region is a section of host memory +} v3_shdw_region_type_t; -*/ -// These are the types of physical memory address regions -// from the perspective of the guest -typedef enum guest_region_type { - GUEST_REGION_NOTHING, - GUEST_REGION_PHYSICAL_MEMORY, - GUEST_REGION_MEMORY_MAPPED_DEVICE} guest_region_type_t; -// These are the types of physical memory address regions -// from the perspective of the HOST -typedef enum host_region_type { - HOST_REGION_INVALID, // This region is INVALID (this is a return type, to denote errors) - HOST_REGION_HOOK, // This region is mapped as not present (always generate page faults) - HOST_REGION_PHYSICAL_MEMORY, // Region is a section of host memory - HOST_REGION_MEMORY_MAPPED_DEVICE, // Region is allocated for DMA - HOST_REGION_UNALLOCATED, // Region is mapped on demand - HOST_REGION_REMOTE, // Region is located on a remote machine - HOST_REGION_SWAPPED, // Region is swapped -} host_region_type_t; +struct v3_shadow_region { + addr_t guest_start; + addr_t guest_end; + v3_shdw_region_type_t host_type; + + addr_t host_addr; // This either points to a host address mapping -#define shadow_mem_type_t host_region_type_t -struct shadow_region { - guest_region_type_t guest_type; - addr_t guest_start; - addr_t guest_end; + // Called when data is read from a memory page + int (*read_hook)(addr_t guest_addr, void * dst, uint_t length, void * priv_data); + // Called when data is written to a memory page + int (*write_hook)(addr_t guest_addr, void * src, uint_t length, void * priv_data); - host_region_type_t host_type; - addr_t host_addr; // This either points to a host address mapping, - // or a structure holding the map info + void * priv_data; - struct shadow_region *next, *prev; + struct rb_node tree_node; }; +typedef struct v3_shdw_map { + struct v3_shadow_region base_region; -struct shadow_map { - uint_t num_regions; - struct shadow_region * head; -}; + addr_t hook_hva; + struct rb_root shdw_regions; +} v3_shdw_map_t; -void init_shadow_region(struct shadow_region * entry, - addr_t guest_addr_start, - addr_t guest_addr_end, - guest_region_type_t guest_region_type, - host_region_type_t host_region_type); -/* -void init_shadow_region_physical(struct shadow_region * entry, - addr_t guest_addr_start, - addr_t guest_addr_end, - guest_region_type_t guest_region_type, - addr_t host_addr_start, - host_region_type_t host_region_type); -*/ -int add_shadow_region_passthrough(struct guest_info * guest_info, - addr_t guest_addr_start, - addr_t guest_addr_end, - addr_t host_addr); -void init_shadow_map(struct guest_info * info); -void free_shadow_map(struct shadow_map * map); +int v3_init_shadow_map(struct guest_info * info); +void v3_delete_shadow_map(struct guest_info * info); -struct shadow_region * get_shadow_region_by_addr(struct shadow_map * map, addr_t guest_addr); -struct shadow_region * get_shadow_region_by_index(struct shadow_map * map, uint_t index); +int v3_add_shadow_mem(struct guest_info * guest_info, + addr_t guest_addr_start, + addr_t guest_addr_end, + addr_t host_addr); -host_region_type_t lookup_shadow_map_addr(struct shadow_map * map, addr_t guest_addr, addr_t * host_addr); +int v3_hook_full_mem(struct guest_info * info, addr_t guest_addr_start, addr_t guest_addr_end, + int (*read)(addr_t guest_addr, void * dst, uint_t length, void * priv_data), + int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data), + void * priv_data); -host_region_type_t get_shadow_addr_type(struct guest_info * info, addr_t guest_addr); -addr_t get_shadow_addr(struct guest_info * info, addr_t guest_addr); +int v3_hook_write_mem(struct guest_info * info, addr_t guest_addr_start, addr_t guest_addr_end, + addr_t host_addr, + int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data), + void * priv_data); -// Semantics: -// Adding a region that overlaps with an existing region results is undefined -// and will probably fail -int add_shadow_region(struct shadow_map * map, struct shadow_region * entry); -// Semantics: -// Deletions result in splitting -int delete_shadow_region(struct shadow_map * map, - addr_t guest_start, - addr_t guest_end); +int v3_unhook_mem(struct guest_info * info, addr_t guest_addr_start); -void print_shadow_map(struct shadow_map * map); +void v3_delete_shadow_region(struct guest_info * info, struct v3_shadow_region * reg); -struct vmm_mem_hook { - // Called when data is read from a memory page - int (*read)(addr_t guest_addr, void * dst, uint_t length, void * priv_data); - - // Called when data is written to a memory page - int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data); - void * priv_data; - struct shadow_region * region; -}; + +struct v3_shadow_region * v3_get_shadow_region(struct guest_info * info, addr_t guest_addr); +addr_t v3_get_shadow_addr(struct v3_shadow_region * reg, addr_t guest_addr); + + + + + +void v3_print_mem_map(struct guest_info * info); -struct vmm_mem_hook * get_mem_hook(struct guest_info * info, addr_t guest_addr); -int hook_guest_mem(struct guest_info * info, addr_t guest_addr_start, addr_t guest_addr_end, - int (*read)(addr_t guest_addr, void * dst, uint_t length, void * priv_data), - int (*write)(addr_t guest_addr, void * src, uint_t length, void * priv_data), - void * priv_data); -int unhook_guest_mem(struct guest_info * info, addr_t guest_addr); +const uchar_t * v3_shdw_region_type_to_str(v3_shdw_region_type_t type); int handle_special_page_fault(struct guest_info * info, addr_t fault_addr, addr_t gp_addr, pf_error_t access_info); +int v3_handle_mem_wr_hook(struct guest_info * info, addr_t guest_va, addr_t guest_pa, + struct v3_shadow_region * reg, pf_error_t access_info); +int v3_handle_mem_full_hook(struct guest_info * info, addr_t guest_va, addr_t guest_pa, + struct v3_shadow_region * reg, pf_error_t access_info); #endif // ! __V3VEE__