X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=palacios%2Finclude%2Fpalacios%2Fvmm_mem.h;h=e08e473574807d4cb12b8a864c2f65ace52747cf;hp=c21155b41218acab5aa2b50bf63ecc95a6c3e8aa;hb=da0f0deecf22754656bad2a95640461ec3ac4f1d;hpb=a4b3e0ab8dc52d98a7d9b65541d7c3c4e825b17c diff --git a/palacios/include/palacios/vmm_mem.h b/palacios/include/palacios/vmm_mem.h index c21155b..e08e473 100644 --- a/palacios/include/palacios/vmm_mem.h +++ b/palacios/include/palacios/vmm_mem.h @@ -32,48 +32,36 @@ 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 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; +typedef enum shdw_region_type { + SHDW_REGION_INVALID, // This region is INVALID (this is a return type to denote errors) + 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 + SHDW_REGION_UNALLOCATED, // Region is mapped on demand +} shdw_region_type_t; -#define shadow_mem_type_t host_region_type_t +struct vmm_mem_hook; struct shadow_region { - guest_region_type_t guest_type; addr_t guest_start; addr_t guest_end; - 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 + shdw_region_type_t host_type; + + addr_t host_addr; // This either points to a host address mapping + + + // 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); + + void * priv_data; struct shadow_region *next, *prev; }; @@ -87,20 +75,12 @@ struct shadow_map { }; + 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); + addr_t guest_addr_start, + addr_t guest_addr_end, + shdw_region_type_t shdw_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, @@ -114,9 +94,9 @@ struct shadow_region * get_shadow_region_by_addr(struct shadow_map * map, addr_t struct shadow_region * get_shadow_region_by_index(struct shadow_map * map, uint_t index); -host_region_type_t lookup_shadow_map_addr(struct shadow_map * map, addr_t guest_addr, addr_t * host_addr); +shdw_region_type_t lookup_shadow_map_addr(struct shadow_map * map, addr_t guest_addr, addr_t * host_addr); -host_region_type_t get_shadow_addr_type(struct guest_info * info, addr_t guest_addr); +shdw_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); // Semantics: @@ -127,40 +107,39 @@ 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); + addr_t guest_start, + addr_t guest_end); void print_shadow_map(struct shadow_map * map); -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 shadow_region * v3_get_shadow_region(struct guest_info * info, addr_t 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); +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); -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 * shdw_region_type_to_str(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 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 shadow_region * reg, pf_error_t access_info); #endif // ! __V3VEE__