#include <palacios/vmm.h>
#include <palacios/vmm_util.h>
#include <palacios/vmm_emulator.h>
+#include <palacios/vm_guest.h>
+#include <palacios/vmm_shadow_paging.h>
+#include <palacios/vmm_direct_paging.h>
-#define MEM_OFFSET_HCALL 0x1000
-static inline
-struct v3_shadow_region * insert_shadow_region(struct guest_info * info,
- struct v3_shadow_region * region);
-
static int mem_offset_hypercall(struct guest_info * info, uint_t hcall_id, void * private_data) {
- info->vm_regs.rbx = info->mem_map.base_region.host_addr;
+ PrintDebug("V3Vee: Memory offset hypercall (offset=%p)\n",
+ (void *)(info->vm_info->mem_map.base_region.host_addr));
+
+ info->vm_regs.rbx = info->vm_info->mem_map.base_region.host_addr;
return 0;
}
+static int unhandled_err(struct guest_info * core, addr_t guest_va, addr_t guest_pa,
+ struct v3_mem_region * reg, pf_error_t access_info) {
+
+ PrintError("Unhandled memory access error\n");
+
+ v3_print_mem_map(core->vm_info);
+
+ v3_print_guest_state(core);
+
+ return -1;
+}
-void v3_init_shadow_map(struct guest_info * info) {
- v3_shdw_map_t * map = &(info->mem_map);
- addr_t mem_pages = info->mem_size >> 12;
- map->shdw_regions.rb_node = NULL;
- map->hook_hva = (addr_t)V3_VAddr(V3_AllocPages(1));
+
+int v3_init_mem_map(struct v3_vm_info * vm) {
+ struct v3_mem_map * map = &(vm->mem_map);
+ addr_t mem_pages = vm->mem_size >> 12;
+
+ memset(&(map->base_region), 0, sizeof(struct v3_mem_region));
+
+ map->mem_regions.rb_node = NULL;
+
// There is an underlying region that contains all of the guest memory
+ // PrintDebug("Mapping %d pages of memory (%u bytes)\n", (int)mem_pages, (uint_t)info->mem_size);
+
map->base_region.guest_start = 0;
- map->base_region.guest_end = info->mem_size;
- map->base_region.host_type = SHDW_REGION_ALLOCATED;
+ map->base_region.guest_end = mem_pages * PAGE_SIZE_4KB;
map->base_region.host_addr = (addr_t)V3_AllocPages(mem_pages);
- v3_register_hypercall(info, MEM_OFFSET_HCALL, mem_offset_hypercall, NULL);
+ map->base_region.flags.read = 1;
+ map->base_region.flags.write = 1;
+ map->base_region.flags.exec = 1;
+ map->base_region.flags.base = 1;
+ map->base_region.flags.alloced = 1;
+
+ map->base_region.unhandled = unhandled_err;
+
+ if ((void *)map->base_region.host_addr == NULL) {
+ PrintError("Could not allocate Guest memory\n");
+ return -1;
+ }
+
+ //memset(V3_VAddr((void *)map->base_region.host_addr), 0xffffffff, map->base_region.guest_end);
+
+ v3_register_hypercall(vm, MEM_OFFSET_HCALL, mem_offset_hypercall, NULL);
+
+ return 0;
}
-void v3_delete_shadow_map(struct guest_info * info) {
- struct rb_node * node = v3_rb_first(&(info->mem_map.shdw_regions));
- struct v3_shadow_region * reg;
+
+void v3_delete_mem_map(struct v3_vm_info * vm) {
+ struct rb_node * node = v3_rb_first(&(vm->mem_map.mem_regions));
+ struct v3_mem_region * reg;
struct rb_node * tmp_node = NULL;
while (node) {
- reg = rb_entry(node, struct v3_shadow_region, tree_node);
+ reg = rb_entry(node, struct v3_mem_region, tree_node);
tmp_node = node;
node = v3_rb_next(node);
- v3_delete_shadow_region(info, reg);
+ v3_delete_mem_region(vm, reg);
}
- V3_FreePage((void *)(info->mem_map.base_region.host_addr));
- V3_FreePage(V3_PAddr((void *)(info->mem_map.hook_hva)));
+ V3_FreePage((void *)(vm->mem_map.base_region.host_addr));
}
-
-
-int v3_add_shadow_mem( struct guest_info * info,
- addr_t guest_addr_start,
- addr_t guest_addr_end,
- addr_t host_addr)
-{
- struct v3_shadow_region * entry = (struct v3_shadow_region *)V3_Malloc(sizeof(struct v3_shadow_region));
+struct v3_mem_region * v3_create_mem_region(struct v3_vm_info * vm, uint16_t core_id,
+ addr_t guest_addr_start, addr_t guest_addr_end) {
+
+ struct v3_mem_region * entry = (struct v3_mem_region *)V3_Malloc(sizeof(struct v3_mem_region));
+ memset(entry, 0, sizeof(struct v3_mem_region));
entry->guest_start = guest_addr_start;
entry->guest_end = guest_addr_end;
- entry->host_type = SHDW_REGION_ALLOCATED;
- entry->host_addr = host_addr;
- entry->write_hook = NULL;
- entry->read_hook = NULL;
- entry->priv_data = NULL;
-
- if (insert_shadow_region(info, entry)) {
- V3_Free(entry);
- return -1;
- }
+ entry->core_id = core_id;
+ entry->unhandled = unhandled_err;
- return 0;
+ return entry;
}
-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 v3_shadow_region * entry = (struct v3_shadow_region *)V3_Malloc(sizeof(struct v3_shadow_region));
+int v3_add_shadow_mem( struct v3_vm_info * vm, uint16_t core_id,
+ addr_t guest_addr_start,
+ addr_t guest_addr_end,
+ addr_t host_addr)
+{
+ struct v3_mem_region * entry = NULL;
+ entry = v3_create_mem_region(vm, core_id,
+ guest_addr_start,
+ guest_addr_end);
- entry->guest_start = guest_addr_start;
- entry->guest_end = guest_addr_end;
- entry->host_type = SHDW_REGION_WRITE_HOOK;
entry->host_addr = host_addr;
- entry->write_hook = write;
- entry->read_hook = NULL;
- entry->priv_data = priv_data;
-
- if (insert_shadow_region(info, entry)) {
- V3_Free(entry);
- return -1;
- }
- return 0;
-}
-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) {
-
- struct v3_shadow_region * entry = (struct v3_shadow_region *)V3_Malloc(sizeof(struct v3_shadow_region));
+ entry->flags.read = 1;
+ entry->flags.write = 1;
+ entry->flags.exec = 1;
+ entry->flags.alloced = 1;
- entry->guest_start = guest_addr_start;
- entry->guest_end = guest_addr_end;
- entry->host_type = SHDW_REGION_FULL_HOOK;
- entry->host_addr = (addr_t)NULL;
- entry->write_hook = write;
- entry->read_hook = read;
- entry->priv_data = priv_data;
-
- if (insert_shadow_region(info, entry)) {
+ if (v3_insert_mem_region(vm, entry) == -1) {
V3_Free(entry);
return -1;
}
-
static inline
-struct v3_shadow_region * __insert_shadow_region(struct guest_info * info,
- struct v3_shadow_region * region) {
- struct rb_node ** p = &(info->mem_map.shdw_regions.rb_node);
+struct v3_mem_region * __insert_mem_region(struct v3_vm_info * vm,
+ struct v3_mem_region * region) {
+ struct rb_node ** p = &(vm->mem_map.mem_regions.rb_node);
struct rb_node * parent = NULL;
- struct v3_shadow_region * tmp_region;
+ struct v3_mem_region * tmp_region;
while (*p) {
parent = *p;
- tmp_region = rb_entry(parent, struct v3_shadow_region, tree_node);
+ tmp_region = rb_entry(parent, struct v3_mem_region, tree_node);
if (region->guest_end <= tmp_region->guest_start) {
p = &(*p)->rb_left;
} else if (region->guest_start >= tmp_region->guest_end) {
p = &(*p)->rb_right;
} else {
- return tmp_region;
+ if ((region->guest_end != tmp_region->guest_end) ||
+ (region->guest_start != tmp_region->guest_start)) {
+ PrintError("Trying to map a partial overlapped core specific page...\n");
+ return tmp_region; // This is ugly...
+ } else if (region->core_id == tmp_region->core_id) {
+ return tmp_region;
+ } else if (region->core_id < tmp_region->core_id) {
+ p = &(*p)->rb_left;
+ } else {
+ p = &(*p)->rb_right;
+ }
}
}
}
-static inline
-struct v3_shadow_region * insert_shadow_region(struct guest_info * info,
- struct v3_shadow_region * region) {
- struct v3_shadow_region * ret;
- if ((ret = __insert_shadow_region(info, region))) {
- return ret;
- }
-
- v3_rb_insert_color(&(region->tree_node), &(info->mem_map.shdw_regions));
-
-
- // flush virtual page tables
- // 3 cases shadow, shadow passthrough, and nested
-
- return NULL;
-}
-
-
-
-
-int handle_special_page_fault(struct guest_info * info,
- addr_t fault_gva, addr_t fault_gpa,
- pf_error_t access_info)
-{
- struct v3_shadow_region * reg = v3_get_shadow_region(info, fault_gpa);
-
- PrintDebug("Handling Special Page Fault\n");
-
- switch (reg->host_type) {
- case SHDW_REGION_WRITE_HOOK:
- return v3_handle_mem_wr_hook(info, fault_gva, fault_gpa, reg, access_info);
- case SHDW_REGION_FULL_HOOK:
- return v3_handle_mem_full_hook(info, fault_gva, fault_gpa, reg, access_info);
- default:
- return -1;
- }
-
- return 0;
-
-}
-
-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) {
-
- addr_t dst_addr = (addr_t)V3_VAddr((void *)v3_get_shadow_addr(reg, guest_pa));
+int v3_insert_mem_region(struct v3_vm_info * vm,
+ struct v3_mem_region * region) {
+ struct v3_mem_region * ret;
+ int i = 0;
- if (v3_emulate_write_op(info, guest_va, guest_pa, dst_addr,
- reg->write_hook, reg->priv_data) == -1) {
- PrintError("Write hook emulation failed\n");
+ if ((ret = __insert_mem_region(vm, region))) {
return -1;
}
- return 0;
-}
-
-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) {
-
- addr_t op_addr = info->mem_map.hook_hva;
-
- if (access_info.write == 1) {
- if (v3_emulate_write_op(info, guest_va, guest_pa, op_addr,
- reg->write_hook, reg->priv_data) == -1) {
- PrintError("Write Full Hook emulation failed\n");
- return -1;
- }
- } else {
- if (v3_emulate_read_op(info, guest_va, guest_pa, op_addr,
- reg->read_hook, reg->write_hook,
- reg->priv_data) == -1) {
- PrintError("Read Full Hook emulation failed\n");
- return -1;
+ v3_rb_insert_color(&(region->tree_node), &(vm->mem_map.mem_regions));
+
+
+
+ for (i = 0; i < vm->num_cores; i++) {
+ struct guest_info * info = &(vm->cores[i]);
+
+ // flush virtual page tables
+ // 3 cases shadow, shadow passthrough, and nested
+
+ if (info->shdw_pg_mode == SHADOW_PAGING) {
+ v3_mem_mode_t mem_mode = v3_get_vm_mem_mode(info);
+
+ if (mem_mode == PHYSICAL_MEM) {
+ addr_t cur_addr;
+
+ for (cur_addr = region->guest_start;
+ cur_addr < region->guest_end;
+ cur_addr += PAGE_SIZE_4KB) {
+ v3_invalidate_passthrough_addr(info, cur_addr);
+ }
+ } else {
+ v3_invalidate_shadow_pts(info);
+ }
+
+ } else if (info->shdw_pg_mode == NESTED_PAGING) {
+ addr_t cur_addr;
+
+ for (cur_addr = region->guest_start;
+ cur_addr < region->guest_end;
+ cur_addr += PAGE_SIZE_4KB) {
+
+ v3_invalidate_nested_addr(info, cur_addr);
+ }
}
}
return 0;
}
+
-struct v3_shadow_region * v3_get_shadow_region(struct guest_info * info, addr_t guest_addr) {
- struct rb_node * n = info->mem_map.shdw_regions.rb_node;
- struct v3_shadow_region * reg = NULL;
+struct v3_mem_region * v3_get_mem_region(struct v3_vm_info * vm, uint16_t core_id, addr_t guest_addr) {
+ struct rb_node * n = vm->mem_map.mem_regions.rb_node;
+ struct v3_mem_region * reg = NULL;
while (n) {
- reg = rb_entry(n, struct v3_shadow_region, tree_node);
+ reg = rb_entry(n, struct v3_mem_region, tree_node);
if (guest_addr < reg->guest_start) {
n = n->rb_left;
} else if (guest_addr >= reg->guest_end) {
n = n->rb_right;
} else {
+ if ((core_id == reg->core_id) ||
+ (reg->core_id == V3_MEM_CORE_ANY)) {
return reg;
+ } else {
+ n = n->rb_right;
+ }
}
}
// There is not registered region, so we check if its a valid address in the base region
- if (guest_addr > info->mem_map.base_region.guest_end) {
+ if (guest_addr > vm->mem_map.base_region.guest_end) {
PrintError("Guest Address Exceeds Base Memory Size (ga=%p), (limit=%p)\n",
- (void *)guest_addr, (void *)info->mem_map.base_region.guest_end);
+ (void *)guest_addr, (void *)vm->mem_map.base_region.guest_end);
+ v3_print_mem_map(vm);
+
return NULL;
}
- return &(info->mem_map.base_region);
+ return &(vm->mem_map.base_region);
}
-void v3_delete_shadow_region(struct guest_info * info, struct v3_shadow_region * reg) {
- if (reg != NULL) {
- v3_rb_erase(&(reg->tree_node), &(info->mem_map.shdw_regions));
- V3_Free(reg);
- }
- // flush virtual page tables
- // 3 cases shadow, shadow passthrough, and nested
+void v3_delete_mem_region(struct v3_vm_info * vm, struct v3_mem_region * reg) {
+ int i = 0;
-}
+ if (reg == NULL) {
+ return;
+ }
+ for (i = 0; i < vm->num_cores; i++) {
+ struct guest_info * info = &(vm->cores[i]);
+
+ // flush virtual page tables
+ // 3 cases shadow, shadow passthrough, and nested
+
+ if (info->shdw_pg_mode == SHADOW_PAGING) {
+ v3_mem_mode_t mem_mode = v3_get_vm_mem_mode(info);
+
+ if (mem_mode == PHYSICAL_MEM) {
+ addr_t cur_addr;
+
+ for (cur_addr = reg->guest_start;
+ cur_addr < reg->guest_end;
+ cur_addr += PAGE_SIZE_4KB) {
+ v3_invalidate_passthrough_addr(info, cur_addr);
+ }
+ } else {
+ v3_invalidate_shadow_pts(info);
+ }
+
+ } else if (info->shdw_pg_mode == NESTED_PAGING) {
+ addr_t cur_addr;
+
+ for (cur_addr = reg->guest_start;
+ cur_addr < reg->guest_end;
+ cur_addr += PAGE_SIZE_4KB) {
+
+ v3_invalidate_nested_addr(info, cur_addr);
+ }
+ }
+ }
+ v3_rb_erase(&(reg->tree_node), &(vm->mem_map.mem_regions));
+ V3_Free(reg);
-addr_t v3_get_shadow_addr(struct v3_shadow_region * reg, addr_t guest_addr) {
- if ( (reg) &&
- (reg->host_type != SHDW_REGION_FULL_HOOK)) {
- return (guest_addr - reg->guest_start) + reg->host_addr;
- } else {
- PrintDebug("MEM Region Invalid\n");
- return 0;
- }
+ // flush virtual page tables
+ // 3 cases shadow, shadow passthrough, and nested
}
-void print_shadow_map(struct guest_info * info) {
- struct rb_node * node = v3_rb_first(&(info->mem_map.shdw_regions));
- struct v3_shadow_region * reg = &(info->mem_map.base_region);
+void v3_print_mem_map(struct v3_vm_info * vm) {
+ struct rb_node * node = v3_rb_first(&(vm->mem_map.mem_regions));
+ struct v3_mem_region * reg = &(vm->mem_map.base_region);
int i = 0;
- PrintDebug("Memory Layout:\n");
+ V3_Print("Memory Layout:\n");
- PrintDebug("Base Region: 0x%p - 0x%p -> 0x%p\n",
+ V3_Print("Base Region: 0x%p - 0x%p -> 0x%p\n",
(void *)(reg->guest_start),
(void *)(reg->guest_end - 1),
(void *)(reg->host_addr));
+
+ // If the memory map is empty, don't print it
+ if (node == NULL) {
+ return;
+ }
+
do {
- reg = rb_entry(node, struct v3_shadow_region, tree_node);
+ reg = rb_entry(node, struct v3_mem_region, tree_node);
- PrintDebug("%d: 0x%p - 0x%p -> 0x%p\n", i,
+ V3_Print("%d: 0x%p - 0x%p -> 0x%p\n", i,
(void *)(reg->guest_start),
(void *)(reg->guest_end - 1),
(void *)(reg->host_addr));
- PrintDebug("\t(%s) (WriteHook = 0x%p) (ReadHook = 0x%p)\n",
- v3_shdw_region_type_to_str(reg->host_type),
- (void *)(reg->write_hook),
- (void *)(reg->read_hook));
+ V3_Print("\t(flags=%x) (unhandled = 0x%p)\n",
+ reg->flags.value,
+ reg->unhandled);
i++;
} while ((node = v3_rb_next(node)));
}
-
-static const uchar_t SHDW_REGION_WRITE_HOOK_STR[] = "SHDW_REGION_WRITE_HOOK";
-static const uchar_t SHDW_REGION_FULL_HOOK_STR[] = "SHDW_REGION_FULL_HOOK";
-static const uchar_t SHDW_REGION_ALLOCATED_STR[] = "SHDW_REGION_ALLOCATED";
-
-const uchar_t * v3_shdw_region_type_to_str(v3_shdw_region_type_t type) {
- switch (type) {
- case SHDW_REGION_WRITE_HOOK:
- return SHDW_REGION_WRITE_HOOK_STR;
- case SHDW_REGION_FULL_HOOK:
- return SHDW_REGION_FULL_HOOK_STR;
- case SHDW_REGION_ALLOCATED:
- return SHDW_REGION_ALLOCATED_STR;
- default:
- return (uchar_t *)"SHDW_REGION_INVALID";
- }
-}
-
