if (is_guest_pf(guest_pml4e_access, shadow_pml4e_access) == 1) {
PrintDebug("Injecting PML4E pf to guest: (guest access error=%d) (pf error code=%d)\n",
*(uint_t *)&guest_pml4e_access, *(uint_t *)&error_code);
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
return 0;
}
//
PrintDebug("Shadow Paging User access error (shadow_pml4e_access=0x%x, guest_pml4e_access=0x%x)\n",
shadow_pml4e_access, guest_pml4e_access);
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
return 0;
} else if ((shadow_pml4e_access != PT_ACCESS_NOT_PRESENT) &&
(shadow_pml4e_access != PT_ACCESS_OK)) {
// inject page fault in guest
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pml4e_access);
PrintDebug("Manual Says to inject page fault into guest\n");
return 0;
if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr), (addr_t *)&guest_pdp) == -1) {
// Machine check the guest
- PrintDebug("Invalid Guest PDP Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr));
+ PrintError("Invalid Guest PDP Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pml4e->pdp_base_addr));
v3_raise_exception(info, MC_EXCEPTION);
return 0;
}
if (is_guest_pf(guest_pdpe_access, shadow_pdpe_access) == 1) {
PrintDebug("Injecting PDPE pf to guest: (guest access error=%d) (pf error code=%d)\n",
*(uint_t *)&guest_pdpe_access, *(uint_t *)&error_code);
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
return 0;
}
//
PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n",
shadow_pdpe_access, guest_pdpe_access);
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
return 0;
} else if ((shadow_pdpe_access != PT_ACCESS_NOT_PRESENT) &&
(shadow_pdpe_access != PT_ACCESS_OK)) {
// inject page fault in guest
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pdpe_access);
PrintDebug("Manual Says to inject page fault into guest\n");
return 0;
if (guest_pa_to_host_va(info, BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr), (addr_t *)&guest_pd) == -1) {
// Machine check the guest
- PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr));
+ PrintError("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pdpe->pd_base_addr));
v3_raise_exception(info, MC_EXCEPTION);
return 0;
}
if (is_guest_pf(guest_pde_access, shadow_pde_access) == 1) {
PrintDebug("Injecting PDE pf to guest: (guest access error=%d) (pf error code=%d)\n",
*(uint_t *)&guest_pde_access, *(uint_t *)&error_code);
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
return 0;
}
//
PrintDebug("Shadow Paging User access error (shadow_pdpe_access=0x%x, guest_pdpe_access=0x%x)\n",
shadow_pde_access, guest_pde_access);
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
return 0;
} else if ((shadow_pde_access == PT_ACCESS_WRITE_ERROR) &&
} else if ((shadow_pde_access != PT_ACCESS_NOT_PRESENT) &&
(shadow_pde_access != PT_ACCESS_OK)) {
// inject page fault in guest
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
PrintDebug("Unknown Error occurred (shadow_pde_access=%d)\n", shadow_pde_access);
PrintDebug("Manual Says to inject page fault into guest\n");
return 0;
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) {
// Machine check the guest
- PrintDebug("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr));
+ PrintError("Invalid Guest PTE Address: 0x%p\n", (void *)BASE_TO_PAGE_ADDR(guest_pde->pt_base_addr));
v3_raise_exception(info, MC_EXCEPTION);
return 0;
}
- if ((shdw_reg == NULL) ||
- (shdw_reg->host_type == SHDW_REGION_INVALID)) {
+ if (shdw_reg == NULL) {
// Inject a machine check in the guest
- PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_pa);
+ PrintError("Invalid Guest Address in page table (0x%p)\n", (void *)guest_pa);
v3_raise_exception(info, MC_EXCEPTION);
return 0;
}
/* Was the page fault caused by the Guest's page tables? */
if (is_guest_pf(guest_pte_access, shadow_pte_access) == 1) {
+
PrintDebug("Access error injecting pf to guest (guest access error=%d) (pf error code=%d)\n",
guest_pte_access, *(uint_t*)&error_code);
- inject_guest_pf(info, fault_addr, error_code);
+
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
+
return 0;
}
shadow_pte->writable = 0;
}
- // dirty flag has been set, check if its in the cache
- /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */
- /* if (error_code.write == 1) { */
- /* state->cached_cr3 = 0; */
- /* shadow_pte->writable = guest_pte->writable; */
- /* } else { */
- /* shadow_pte->writable = 0; */
- /* } */
- /* } */
// Write hooks trump all, and are set Read Only
if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
shadow_pte->writable = guest_pte->writable;
}
- /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_pa)) != NULL) { */
- /* struct shadow_page_state * state = &(info->shdw_pg_state); */
- /* PrintDebug("Write operation on Guest PAge Table Page\n"); */
- /* state->cached_cr3 = 0; */
- /* } */
return 0;
} else {
// Inject page fault into the guest
- inject_guest_pf(info, fault_addr, error_code);
+ if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+ PrintError("Could not inject guest page fault\n");
+ return -1;
+ }
PrintError("PTE Page fault fell through... Not sure if this should ever happen\n");
PrintError("Manual Says to inject page fault into guest\n");
return -1;
struct v3_shadow_region * shdw_reg = v3_get_shadow_region(info, guest_fault_pa);
- if ((shdw_reg == NULL) ||
- (shdw_reg->host_type == SHDW_REGION_INVALID)) {
+ if (shdw_reg == NULL) {
// Inject a machine check in the guest
- PrintDebug("Invalid Guest Address in page table (0x%p)\n", (void *)guest_fault_pa);
+ PrintError("Invalid Guest Address in page table (0x%p)\n", (void *)guest_fault_pa);
v3_raise_exception(info, MC_EXCEPTION);
return 0;
}
(shdw_reg->host_type == SHDW_REGION_WRITE_HOOK)) {
addr_t shadow_pa = v3_get_shadow_addr(shdw_reg, guest_fault_pa);
- PrintDebug("Shadow PA=%p, ShadowPTE=%p\n", (void *)shadow_pa, (void *)shadow_pte);
-
shadow_pte->page_base_addr = PAGE_BASE_ADDR(shadow_pa);
- PrintDebug("Test1\n");
shadow_pte->present = 1;
*/
shadow_pte->user_page = 1;
-
-
- /* if (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */
- /* // Check if the entry is a page table... */
- /* PrintDebug("Marking page as Guest Page Table (large page)\n"); */
- /* shadow_pte->writable = 0; */
- /* } else */ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
+ if (shdw_reg->host_type == SHDW_REGION_WRITE_HOOK) {
shadow_pte->writable = 0;
} else {
shadow_pte->writable = 1;
//
} else {
- // Handle hooked pages as well as other special pages
- // if (handle_special_page_fault(info, fault_addr, guest_fault_pa, error_code) == -1) {
-
if (v3_handle_mem_full_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 (find_pte_map(state->cached_ptes, PAGE_ADDR(guest_fault_pa)) != NULL) { */
- /* struct shadow_page_state * state = &(info->shdw_pg_state); */
- /* PrintDebug("Write operation on Guest PAge Table Page (large page)\n"); */
- /* state->cached_cr3 = 0; */
- /* shadow_pte->writable = 1; */
- /* } */
-
} else {
PrintError("Error in large page fault handler...\n");
PrintError("This case should have been handled at the top level handler\n");