PrintDebug("Shadow page fault handler: %p\n", (void*) fault_addr );
PrintDebug("Handling PDE32 Fault\n");
- if (guest_pa_to_host_va(info, guest_cr3, (addr_t*)&guest_pd) == -1) {
+ if (v3_gpa_to_hva(info, guest_cr3, (addr_t*)&guest_pd) == -1) {
PrintError("Invalid Guest PDE Address: 0x%p\n", (void *)guest_cr3);
return -1;
}
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
PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr));
v3_raise_exception(info, MC_EXCEPTION);
pte32_t * shadow_pte = (pte32_t *)&(shadow_pt[PTE32_INDEX(fault_addr)]);
addr_t guest_pa = BASE_TO_PAGE_ADDR((addr_t)(guest_pte->page_base_addr)) + PAGE_OFFSET(fault_addr);
- 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);
if (shdw_reg == NULL) {
// Inject a machine check in the guest
if ((shdw_reg->flags.alloced == 1) ||
(shdw_reg->flags.read == 1)) {
- addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, info->cpu_id, guest_pa);
+ 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->flags.write == 0) {
shadow_pte->writable = 0;
}
- } else if (shdw_reg->flags.hook == 1) {
+ } 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->flags.hook == 1) {
- 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;
- }
+ }
return 0;
PrintDebug("Handling 4MB 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 ((shdw_reg->flags.alloced == 1) ||
(shdw_reg->flags.read == 1)) {
- addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, info->cpu_id, guest_fault_pa);
+ 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);
PrintDebug("\tMapping shadow page (%p)\n", (void *)BASE_TO_PAGE_ADDR(shadow_pte->page_base_addr));
shadow_pte->global_page = large_guest_pde->global_page;
//
- } else if (shdw_reg->flags.hook == 1) {
- if (v3_handle_mem_hook(info, fault_addr, guest_fault_pa, shdw_reg, error_code) == -1) {
+ } else {
+ 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->flags.hook == 1) {
- 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 {
PrintError("Error in large page fault handler...\n");
PrintError("This case should have been handled at the top level handler\n");
pde32_t * guest_pd = NULL;
pde32_t * guest_pde;
- if (guest_pa_to_host_va(info, guest_cr3, (addr_t*)&guest_pd) == -1) {
+ if (v3_gpa_to_hva(info, guest_cr3, (addr_t*)&guest_pd) == -1) {
PrintError("Invalid Guest PDE Address: 0x%p\n", (void *)guest_cr3);
return -1;
}