Added non-contiguous memory region support.

[palacios.git] / palacios / src / palacios / vmm_direct_paging.c

diff --git a/palacios/src/palacios/vmm_direct_paging.c b/palacios/src/palacios/vmm_direct_paging.c
index b044b1f..92601c4 100644 (file)
--- a/palacios/src/palacios/vmm_direct_paging.c
+++ b/palacios/src/palacios/vmm_direct_paging.c
@@ -33,7 +33,15 @@
 
 static addr_t create_generic_pt_page() {
     void * page = 0;
-    page = V3_VAddr(V3_AllocPages(1));
+    void *temp;
+
+    temp = V3_AllocPages(1);
+    if (!temp) { 
+       PrintError(VM_NONE, VCORE_NONE,"Cannot allocate page\n");
+       return 0;
+    }
+
+    page = V3_VAddr(temp);
     memset(page, 0, PAGE_SIZE);
 
     return (addr_t)page;
@@ -66,7 +74,7 @@ int v3_free_passthrough_pts(struct guest_info * core) {
            delete_page_tables_32pae((pdpe32pae_t *)V3_VAddr((void *)(core->direct_map_pt)));
            break;
        default:
-           PrintError("Unknown CPU Mode\n");
+           PrintError(core->vm_info, core, "Unknown CPU Mode\n");
            return -1;
            break;
     }
@@ -93,7 +101,7 @@ int v3_activate_passthrough_pt(struct guest_info * info) {
     // So this will cause chaos if it is called at that time
 
     info->ctrl_regs.cr3 = *(addr_t*)&(info->direct_map_pt);
-    //PrintError("Activate Passthrough Page tables not implemented\n");
+    //PrintError(info->vm_info, info, "Activate Passthrough Page tables not implemented\n");
     return 0;
 }
 
@@ -113,7 +121,7 @@ int v3_handle_passthrough_pagefault(struct guest_info * info, addr_t fault_addr,
            return handle_passthrough_pagefault_32pae(info, fault_addr, error_code);
 
        default:
-           PrintError("Unknown CPU Mode\n");
+           PrintError(info->vm_info, info, "Unknown CPU Mode\n");
            break;
     }
     return -1;
@@ -125,7 +133,7 @@ int v3_handle_nested_pagefault(struct guest_info * info, addr_t fault_addr, pf_e
     v3_cpu_mode_t mode = v3_get_host_cpu_mode();
 
 
-    PrintDebug("Nested PageFault: fault_addr=%p, error_code=%u\n", (void *)fault_addr, *(uint_t *)&error_code);
+    PrintDebug(info->vm_info, info, "Nested PageFault: fault_addr=%p, error_code=%u\n", (void *)fault_addr, *(uint_t *)&error_code);
 
     switch(mode) {
        case REAL:
@@ -140,7 +148,7 @@ int v3_handle_nested_pagefault(struct guest_info * info, addr_t fault_addr, pf_e
            return handle_passthrough_pagefault_64(info, fault_addr, error_code);           
        
        default:
-           PrintError("Unknown CPU Mode\n");
+           PrintError(info->vm_info, info, "Unknown CPU Mode\n");
            break;
     }
     return -1;
@@ -161,13 +169,35 @@ int v3_invalidate_passthrough_addr(struct guest_info * info, addr_t inv_addr) {
            return invalidate_addr_32pae(info, inv_addr);
 
        default:
-           PrintError("Unknown CPU Mode\n");
+           PrintError(info->vm_info, info, "Unknown CPU Mode\n");
            break;
     }
     return -1;
 }
 
 
+int v3_invalidate_passthrough_addr_range(struct guest_info * info, 
+                                        addr_t inv_addr_start, addr_t inv_addr_end) {
+    v3_cpu_mode_t mode = v3_get_vm_cpu_mode(info);
+
+    switch(mode) {
+       case REAL:
+       case PROTECTED:
+           return invalidate_addr_32_range(info, inv_addr_start, inv_addr_end);
+
+       case PROTECTED_PAE:
+       case LONG:
+       case LONG_32_COMPAT:
+           // Long mode will only use 32PAE page tables...
+           return invalidate_addr_32pae_range(info, inv_addr_start, inv_addr_end);
+
+       default:
+           PrintError(info->vm_info, info, "Unknown CPU Mode\n");
+           break;
+    }
+    return -1;
+}
+
 int v3_invalidate_nested_addr(struct guest_info * info, addr_t inv_addr) {
 
 #ifdef __V3_64BIT__
@@ -189,7 +219,36 @@ int v3_invalidate_nested_addr(struct guest_info * info, addr_t inv_addr) {
            return invalidate_addr_64(info, inv_addr);      
        
        default:
-           PrintError("Unknown CPU Mode\n");
+           PrintError(info->vm_info, info, "Unknown CPU Mode\n");
+           break;
+    }
+
+    return -1;
+}
+
+int v3_invalidate_nested_addr_range(struct guest_info * info, 
+                                   addr_t inv_addr_start, addr_t inv_addr_end) {
+
+#ifdef __V3_64BIT__
+    v3_cpu_mode_t mode = LONG;
+#else 
+    v3_cpu_mode_t mode = PROTECTED;
+#endif
+
+    switch(mode) {
+       case REAL:
+       case PROTECTED:
+           return invalidate_addr_32_range(info, inv_addr_start, inv_addr_end);
+
+       case PROTECTED_PAE:
+           return invalidate_addr_32pae_range(info, inv_addr_start, inv_addr_end);
+
+       case LONG:
+       case LONG_32_COMPAT:
+           return invalidate_addr_64_range(info, inv_addr_start, inv_addr_end);            
+       
+       default:
+           PrintError(info->vm_info, info, "Unknown CPU Mode\n");
            break;
     }