X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_paging.c;h=d8900df6bd465396853f7abd8c339ca7fc2e9355;hb=abf911f47d91375cfbe41bee04e980aa829d26f3;hp=7c8d8af00b92f23a9a5229b35d63b9aef2b58198;hpb=0e1c44d98d3dd40bd870278d49122e0173b12b73;p=palacios.git

diff --git a/palacios/src/palacios/vmm_paging.c b/palacios/src/palacios/vmm_paging.c
index 7c8d8af..d8900df 100644
--- a/palacios/src/palacios/vmm_paging.c
+++ b/palacios/src/palacios/vmm_paging.c
@@ -38,6 +38,26 @@ void delete_page_tables_pde32(pde32_t * pde) {
 
 
 
+int pt32_lookup(pde32_t * pd, addr_t vaddr, addr_t * paddr) {
+  addr_t pde_entry;
+  pde32_entry_type_t pde_entry_type;
+
+  if (pd == 0) {
+    return -1;
+  }
+
+  pde_entry_type = pde32_lookup(pd, vaddr, &pde_entry);
+
+  if (pde_entry_type == PDE32_ENTRY_PTE32) {
+    return pte32_lookup((pte32_t *)pde_entry, vaddr, paddr);
+  } else if (pde_entry_type == PDE32_ENTRY_LARGE_PAGE) {
+    *paddr = pde_entry;
+    return 0;
+  }
+
+  return -1;
+}
+
 
 
 /* We can't do a full lookup because we don't know what context the page tables are in...
@@ -51,10 +71,12 @@ pde32_entry_type_t pde32_lookup(pde32_t * pd, addr_t addr, addr_t * entry) {
     *entry = 0;
     return PDE32_ENTRY_NOT_PRESENT;
   } else  {
-    *entry = PAGE_ADDR(pde_entry->pt_base_addr);
-    
+
     if (pde_entry->large_page) {
-      *entry += PAGE_OFFSET(addr);
+      pde32_4MB_t * large_pde = (pde32_4MB_t *)pde_entry;
+
+      *entry = PDE32_4MB_T_ADDR(*large_pde);
+      *entry += PD32_4MB_PAGE_OFFSET(addr);
       return PDE32_ENTRY_LARGE_PAGE;
     } else {
       *entry = PDE32_T_ADDR(*pde_entry);
@@ -93,7 +115,7 @@ pt_access_status_t can_access_pde32(pde32_t * pde, addr_t addr, pf_error_t acces
   } else if ((entry->writable == 0) && (access_type.write == 1)) {
     return PT_WRITE_ERROR;
   } else if ((entry->user_page == 0) && (access_type.user == 1)) {
-    // Check CR0.WP
+    // Check CR0.WP?
     return PT_USER_ERROR;
   }
 
@@ -109,7 +131,7 @@ pt_access_status_t can_access_pte32(pte32_t * pte, addr_t addr, pf_error_t acces
   } else if ((entry->writable == 0) && (access_type.write == 1)) {
     return PT_WRITE_ERROR;
   } else if ((entry->user_page == 0) && (access_type.user == 1)) {
-    // Check CR0.WP
+    // Check CR0.WP?
     return PT_USER_ERROR;
   }