X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_direct_paging_64.h;h=96b8f2120c2e9ae7f52c96266d3fbef7d6ca874b;hb=fd9690bf0f032246f2d2c596e2467cccc45faff6;hp=ab82c9ace221e846c61aa7008cc2e693406ca80b;hpb=ff30ed5923877636b2b51bed0349f9b440625137;p=palacios.git

diff --git a/palacios/src/palacios/vmm_direct_paging_64.h b/palacios/src/palacios/vmm_direct_paging_64.h
index ab82c9a..96b8f21 100644
--- a/palacios/src/palacios/vmm_direct_paging_64.h
+++ b/palacios/src/palacios/vmm_direct_paging_64.h
@@ -30,8 +30,8 @@
 
 
 static inline int handle_passthrough_pagefault_64(struct guest_info * info, 
-						     addr_t fault_addr, 
-						     pf_error_t error_code) {
+						  addr_t fault_addr, 
+						  pf_error_t error_code) {
     pml4e64_t * pml = NULL;
     pdpe64_t * pdpe = NULL;
     pde64_t * pde = NULL;
@@ -46,16 +46,15 @@ static inline int handle_passthrough_pagefault_64(struct guest_info * info,
 
     
 
-    struct v3_shadow_region * region =  v3_get_shadow_region(info, fault_addr);
+    struct v3_shadow_region * region =  v3_get_shadow_region(info->vm_info, info->cpu_id, fault_addr);
   
-    if ((region == NULL) || 
-	(region->host_type == SHDW_REGION_INVALID)) {
+    if (region == NULL) {
 	PrintError("Invalid region in passthrough page fault 64, addr=%p\n", 
 		   (void *)fault_addr);
 	return -1;
     }
 
-    host_addr = v3_get_shadow_addr(region, fault_addr);
+    host_addr = v3_get_shadow_addr(region, info->cpu_id, fault_addr);
     //
 
     // Lookup the correct PML address based on the PAGING MODE
@@ -112,37 +111,83 @@ static inline int handle_passthrough_pagefault_64(struct guest_info * info,
     if (pte[pte_index].present == 0) {
 	pte[pte_index].user_page = 1;
 	
-	if (region->host_type == SHDW_REGION_ALLOCATED) {
+	if ((region->flags.alloced == 1) && 
+	    (region->flags.read == 1)) {
 	    // Full access
 	    pte[pte_index].present = 1;
-	    pte[pte_index].writable = 1;
 
-	    pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
-	    
-	} else if (region->host_type == SHDW_REGION_WRITE_HOOK) {
-	    // Only trap writes
-	    pte[pte_index].present = 1; 
-	    pte[pte_index].writable = 0;
+	    if (region->flags.write == 1) {
+		pte[pte_index].writable = 1;
+	    } else {
+		pte[pte_index].writable = 0;
+	    }
 
 	    pte[pte_index].page_base_addr = PAGE_BASE_ADDR(host_addr);
-
-	} else if (region->host_type == SHDW_REGION_FULL_HOOK) {
-	    // trap all accesses
-	    return v3_handle_mem_full_hook(info, fault_addr, fault_addr, region, error_code);
-
-	} else {
-	    PrintError("Unknown Region Type...\n");
-	    return -1;
 	}
     }
    
-    if ( (region->host_type == SHDW_REGION_WRITE_HOOK) && 
-	 (error_code.write == 1) ) {
-	return v3_handle_mem_wr_hook(info, fault_addr, fault_addr, region, error_code);
+    if (region->flags.hook == 1) {
+	if ((error_code.write == 1) || (region->flags.read == 0)) {
+	    return v3_handle_mem_hook(info, fault_addr, fault_addr, region, error_code);
+	}
+    }
+
+    return 0;
+}
+
+static inline int invalidate_addr_64(struct guest_info * info, addr_t inv_addr) {
+    pml4e64_t * pml = NULL;
+    pdpe64_t * pdpe = NULL;
+    pde64_t * pde = NULL;
+    pte64_t * pte = NULL;
+
+
+    // TODO:
+    // Call INVLPGA
+
+    // clear the page table entry
+    int pml_index = PML4E64_INDEX(inv_addr);
+    int pdpe_index = PDPE64_INDEX(inv_addr);
+    int pde_index = PDE64_INDEX(inv_addr);
+    int pte_index = PTE64_INDEX(inv_addr);
+
+    
+    // Lookup the correct PDE address based on the PAGING MODE
+    if (info->shdw_pg_mode == SHADOW_PAGING) {
+	pml = CR3_TO_PML4E64_VA(info->ctrl_regs.cr3);
+    } else {
+	pml = CR3_TO_PML4E64_VA(info->direct_map_pt);
+    }
+
+    if (pml[pml_index].present == 0) {
+	return 0;
+    }
+
+    pdpe = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pml[pml_index].pdp_base_addr));
+
+    if (pdpe[pdpe_index].present == 0) {
+	return 0;
+    } else if (pdpe[pdpe_index].large_page == 1) {
+	pdpe[pdpe_index].present = 0;
+	return 0;
     }
 
+    pde = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pdpe[pdpe_index].pd_base_addr));
+
+    if (pde[pde_index].present == 0) {
+	return 0;
+    } else if (pde[pde_index].large_page == 1) {
+	pde[pde_index].present = 0;
+	return 0;
+    }
+
+    pte = V3_VAddr((void*)BASE_TO_PAGE_ADDR(pde[pde_index].pt_base_addr));
+
+    pte[pte_index].present = 0;
+
     return 0;
 }
 
 
+
 #endif