X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_shadow_paging.c;h=d3e4c931b37c05a8144b237706b4bd2ca52a35d7;hb=f7e4262b2d65bbe3eb0c21ab3a6c4bb185531af7;hp=4f9d00f4a6bdb3b1203e587a2aa195cef609ebe9;hpb=14fa18cc54571eaa7aaa0f7d55677bdb4dad81a6;p=palacios.git

diff --git a/palacios/src/palacios/vmm_shadow_paging.c b/palacios/src/palacios/vmm_shadow_paging.c
index 4f9d00f..d3e4c93 100644
--- a/palacios/src/palacios/vmm_shadow_paging.c
+++ b/palacios/src/palacios/vmm_shadow_paging.c
@@ -33,20 +33,22 @@
 
 
 
-#ifdef CONFIG_SHADOW_PAGING_TELEMETRY
+#ifdef V3_CONFIG_SHADOW_PAGING_TELEMETRY
 #include <palacios/vmm_telemetry.h>
 #endif
 
-#ifdef CONFIG_SYMBIOTIC_SWAP
+#ifdef V3_CONFIG_SYMBIOTIC_SWAP
 #include <palacios/vmm_sym_swap.h>
 #endif
 
-#ifndef CONFIG_DEBUG_SHADOW_PAGING
+#ifndef V3_CONFIG_DEBUG_SHADOW_PAGING
 #undef PrintDebug
 #define PrintDebug(fmt, args...)
 #endif
 
 
+static const char default_strategy[] = "VTLB";
+
 
 static struct hashtable * master_shdw_pg_table = NULL;
 
@@ -93,6 +95,11 @@ int V3_init_shdw_paging() {
     return 0;
 }
 
+int V3_deinit_shdw_paging() {
+    v3_free_htable(master_shdw_pg_table, 0, 0);
+    return 0;
+}
+
 
 
 /*** 
@@ -100,7 +107,7 @@ int V3_init_shdw_paging() {
  ***/
 
 
-#ifdef CONFIG_SHADOW_PAGING_TELEMETRY
+#ifdef V3_CONFIG_SHADOW_PAGING_TELEMETRY
 static void telemetry_cb(struct v3_vm_info * vm, void * private_data, char * hdr) {
     int i = 0;
     for (i = 0; i < vm->num_cores; i++) {
@@ -129,7 +136,7 @@ int v3_init_shdw_pg_state(struct guest_info * core) {
     }
 
 
-#ifdef CONFIG_SHADOW_PAGING_TELEMETRY
+#ifdef V3_CONFIG_SHADOW_PAGING_TELEMETRY
     v3_add_telemetry_cb(core->vm_info, telemetry_cb, NULL);
 #endif
   
@@ -137,19 +144,43 @@ int v3_init_shdw_pg_state(struct guest_info * core) {
 }
 
 
+int v3_deinit_shdw_pg_state(struct guest_info * core) {
+    struct v3_shdw_pg_impl * impl = core->vm_info->shdw_impl.current_impl;
+
+    if (impl->local_deinit(core) == -1) {
+	PrintError("Error deinitializing shadow paging state\n");
+	return -1;
+    }
+
+
+    return 0;
+}
+
+
 
 int v3_init_shdw_impl(struct v3_vm_info * vm) {
     struct v3_shdw_impl_state * impl_state = &(vm->shdw_impl);
     v3_cfg_tree_t * pg_cfg = v3_cfg_subtree(vm->cfg_data->cfg, "paging");
-    char * impl_name = v3_cfg_val(pg_cfg, "mode");
+    char * pg_mode = v3_cfg_val(pg_cfg, "mode");
+    char * pg_strat = v3_cfg_val(pg_cfg, "strategy");
     struct v3_shdw_pg_impl * impl = NULL;
    
+    PrintDebug("Checking if shadow paging requested.\n");
+    if ((pg_mode != NULL) && (strcasecmp(pg_mode, "nested") == 0)) {
+	PrintDebug("Nested paging specified - not initializing shadow paging.\n");
+	return 0;
+    }
+
+    if (pg_strat == NULL) {
+	pg_strat = (char *)default_strategy;
+    }
+	
     V3_Print("Initialization of Shadow Paging implementation\n");
 
-    impl = (struct v3_shdw_pg_impl *)v3_htable_search(master_shdw_pg_table, (addr_t)impl_name);
+    impl = (struct v3_shdw_pg_impl *)v3_htable_search(master_shdw_pg_table, (addr_t)pg_strat);
 
     if (impl == NULL) {
-	PrintError("Could not find shadow paging impl (%s)\n", impl_name);
+	PrintError("Could not find shadow paging impl (%s)\n", pg_strat);
 	return -1;
     }
    
@@ -160,8 +191,21 @@ int v3_init_shdw_impl(struct v3_vm_info * vm) {
 	return -1;
     }
 
-    
+    return 0;
+}
 
+int v3_deinit_shdw_impl(struct v3_vm_info * vm) {
+    struct v3_shdw_pg_impl * impl = vm->shdw_impl.current_impl;
+
+    if (impl == NULL) {
+	// Shadow paging not implemented
+	return 0;
+    }
+
+    if (impl->deinit(vm) == -1) {
+	PrintError("Error deinitializing shadow paging implementation\n");
+	return -1;
+    }
 
     return 0;
 }
@@ -260,7 +304,7 @@ int v3_handle_shadow_invlpg(struct guest_info * core) {
 int v3_inject_guest_pf(struct guest_info * core, addr_t fault_addr, pf_error_t error_code) {
     core->ctrl_regs.cr2 = fault_addr;
 
-#ifdef CONFIG_SHADOW_PAGING_TELEMETRY
+#ifdef V3_CONFIG_SHADOW_PAGING_TELEMETRY
     core->shdw_pg_state.guest_faults++;
 #endif