PrintDebug("64 bit Shadow page fault handler: %p\n", (void *)fault_addr);
PrintDebug("Handling PML fault\n");
- if (guest_pa_to_host_va(info, guest_cr3, (addr_t*)&guest_pml) == -1) {
+ if (v3_gpa_to_hva(info, guest_cr3, (addr_t*)&guest_pml) == -1) {
PrintError("Invalid Guest PML4E Address: 0x%p\n", (void *)guest_cr3);
return -1;
}
// Continue processing at the next level
- if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr), (addr_t *)&guest_pdp) == -1) {
+ if (v3_gpa_to_hva(info, BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr), (addr_t *)&guest_pdp) == -1) {
// Machine check the guest
PrintError("Invalid Guest PDP Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr));
v3_raise_exception(info, MC_EXCEPTION);
// Continue processing at the next level
- if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr), (addr_t *)&guest_pd) == -1) {
+ if (v3_gpa_to_hva(info, BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr), (addr_t *)&guest_pd) == -1) {
// Machine check the guest
PrintError("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr));
v3_raise_exception(info, MC_EXCEPTION);
// Continue processing at the next level
if (guest_pde->large_page == 0) {
- if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr), (addr_t *)&guest_pt) == -1) {
+ if (v3_gpa_to_hva(info, BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr), (addr_t *)&guest_pt) == -1) {
// Machine check the guest
PrintError("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr));
v3_raise_exception(info, MC_EXCEPTION);
PrintDebug("Handling PTE fault\n");
- struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info->vm_info, info->cpu_id, guest_pa);
+ struct v3_mem_region * shdw_reg = v3_get_mem_region(info->vm_info, info->cpu_id, guest_pa);
// Page Table Entry Not Present
PrintDebug("guest_pa =%p\n", (void *)guest_pa);
- if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) ||
- (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
- addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, info->cpu_id, guest_pa);
+ if ((shdw_reg->flags.alloced == 1) ||
+ (shdw_reg->flags.read == 1)) {
+ addr_t shadow_pa = 0;
+
+ if (v3_gpa_to_hpa(info, guest_pa, &shadow_pa) == -1) {
+ PrintError("could not translate page fault address (%p)\n", (void *)guest_pa);
+ return -1;
+ }
shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
// Write hooks trump all, and are set Read Only
- if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+ if (shdw_reg->flags.write == 0) {
shadow_pte->writable = 0;
}
} else {
// Page fault handled by hook functions
- if (v3_handle_mem_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
+ if (shdw_reg->unhandled(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
return -1;
}
} else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) {
guest_pte->dirty = 1;
- if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
- if (v3_handle_mem_hook(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
+
+
+ if (shdw_reg->flags.write == 1) {
+ PrintDebug("Shadow PTE Write Error\n");
+ shadow_pte->writable = guest_pte->writable;
+ } else {
+ if (shdw_reg->unhandled(info, fault_addr, guest_pa, shdw_reg, error_code) == -1) {
PrintError("Special Page fault handler returned error for address: %p\n", (void *)fault_addr);
return -1;
}
- } else {
- PrintDebug("Shadow PTE Write Error\n");
- shadow_pte->writable = guest_pte->writable;
}
PrintDebug("Handling 2MB fault (guest_fault_pa=%p) (error_code=%x)\n", (void *)guest_fault_pa, *(uint_t*)&error_code);
PrintDebug("ShadowPT=%p, LargeGuestPDE=%p\n", shadow_pt, large_guest_pde);
- struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info->vm_info, info->cpu_id, guest_fault_pa);
+ struct v3_mem_region * shdw_reg = v3_get_mem_region(info->vm_info, info->cpu_id, guest_fault_pa);
if (shdw_reg == NULL) {
if (shadow_pte_access == PT_ACCESS_NOT_PRESENT) {
// Get the guest physical address of the fault
- if ((shdw_reg->host_type == SHDW_REGION_ALLOCATED) ||
- (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
- addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, info->cpu_id, guest_fault_pa);
+ if ((shdw_reg->flags.alloced == 1) ||
+ (shdw_reg->flags.read == 1)) {
+ addr_t shadow_pa = 0;
+
+ if (v3_gpa_to_hpa(info, guest_fault_pa, &shadow_pa) == -1) {
+ PrintError("could not translate page fault address (%p)\n", (void *)guest_fault_pa);
+ return -1;
+ }
shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
*/
shadow_pte->user_page = 1;
- if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+ if (shdw_reg->flags.write == 0) {
shadow_pte->writable = 0;
} else {
shadow_pte->writable = 1;
//
} else {
- if (v3_handle_mem_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
+ if (shdw_reg->unhandled(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
return -1;
}
}
} else if (shadow_pte_access == PT_ACCESS_WRITE_ERROR) {
- if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
-
- if (v3_handle_mem_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
- PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
- return -1;
- }
+ if (shdw_reg->unhandled(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
+ PrintError("Special Page Fault handler returned error for address: %p\n", (void *)fault_addr);
+ return -1;
}
} else {