int pte_index = PTE32_INDEX(fault_addr);
struct v3_shadow_region * region = v3_get_shadow_region(info, fault_addr);
-
+
if (region == NULL) {
PrintError("Invalid region in passthrough page fault 32, addr=%p\n",
(void *)fault_addr);
pde[pde_index].present = 1;
pde[pde_index].writable = 1;
- pde[pde_index].user_page = 1;
+ pde[pde_index].user_page = 0;
pde[pde_index].pt_base_addr = PAGE_BASE_ADDR((addr_t)V3_PAddr(pte));
} else {
// Fix up the PTE entry
if (pte[pte_index].present == 0) {
- pte[pte_index].user_page = 1;
+ pte[pte_index].user_page = 0;
if (region->host_type == SHDW_REGION_ALLOCATED) {
// Full access
pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
} else if (region->host_type == SHDW_REGION_WRITE_HOOK) {
// Only trap writes
+ PrintDebug("Faulted in a write hook page\n");
pte[pte_index].present = 1;
pte[pte_index].writable = 0;
if ( (region->host_type == SHDW_REGION_WRITE_HOOK) &&
(error_code.write == 1) ) {
+ PrintDebug("Triggering Direct paging Write hook\n");
return v3_handle_mem_wr_hook(info, fault_addr, fault_addr, region, error_code);
}
/* Was the page fault caused by the Guest's page tables? */
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);
+ PrintDebug("Injecting PDE pf to guest: (guest access error=%d) (shdw access error=%d) (pf error code=%d)\n",
+ *(uint_t *)&guest_pde_access, *(uint_t *)&shadow_pde_access, *(uint_t *)&error_code);
if (inject_guest_pf(info, fault_addr, error_code) == -1) {
PrintError("Could not inject guest page fault\n");
return -1;