New Shadow paging implementation to allow pluggable shadow paging implementations

[palacios.git] / palacios / include / palacios / vmm_shadow_paging.h

diff --git a/palacios/include/palacios/vmm_shadow_paging.h b/palacios/include/palacios/vmm_shadow_paging.h
index cd0cb7a..a88270b 100644 (file)
--- a/palacios/include/palacios/vmm_shadow_paging.h
+++ b/palacios/include/palacios/vmm_shadow_paging.h
@@ -29,17 +29,38 @@
 #include <palacios/vmm_list.h>
 #include <palacios/vmm_msr.h>
 
+#include <palacios/vmm_config.h>
 
-struct shadow_page_state {
+
+struct guest_info;
+
+struct v3_shdw_pg_impl {
+    char * name;
+    int (*init)(struct v3_vm_info * vm, v3_cfg_tree_t * cfg);
+    int (*deinit)(struct v3_vm_info * vm);
+    int (*local_init)(struct guest_info * core);
+    int (*handle_pagefault)(struct guest_info * core, addr_t fault_addr, pf_error_t error_code);
+    int (*handle_invlpg)(struct guest_info * core, addr_t vaddr);
+    int (*activate_shdw_pt)(struct guest_info * core);
+    int (*invalidate_shdw_pt)(struct guest_info * core);
+};
+
+
+
+struct v3_shdw_impl_state {
+    
+    struct v3_shdw_pg_impl * current_impl;
+    void * impl_data;
+};
+
+struct v3_shdw_pg_state {
 
     // virtualized control registers
     v3_reg_t guest_cr3;
     v3_reg_t guest_cr0;
     v3_msr_t guest_efer;
 
-    // list of allocated shadow pages
-    struct list_head page_list;
-
+    void * local_impl_data;
 
 #ifdef CONFIG_SHADOW_PAGING_TELEMETRY
     uint_t guest_faults;
@@ -49,20 +70,42 @@ struct shadow_page_state {
 
 
 
-struct guest_info;
 
 
-int v3_init_shadow_page_state(struct guest_info * info);
+
+int v3_init_shdw_impl(struct v3_vm_info * vm);
+int v3_init_shdw_pg_state(struct guest_info * info);
 
 
+/* Handler implementations */
 int v3_handle_shadow_pagefault(struct guest_info * info, addr_t fault_addr, pf_error_t error_code);
 int v3_handle_shadow_invlpg(struct guest_info * info);
 
-
+/* Actions.. */
 int v3_activate_shadow_pt(struct guest_info * info);
 int v3_invalidate_shadow_pts(struct guest_info * info);
 
 
+/* Utility functions for shadow paging implementations */
+int v3_inject_guest_pf(struct guest_info * info, addr_t fault_addr, pf_error_t error_code);
+int v3_is_guest_pf(pt_access_status_t guest_access, pt_access_status_t shadow_access);
+
+
+
+
+
+int V3_init_shdw_paging();
+
+#define register_shdw_pg_impl(impl)                                    \
+    static struct v3_shdw_pg_impl * _v3_shdw_pg_impl                   \
+    __attribute__((used))                                              \
+       __attribute__((unused, __section__ ("_v3_shdw_pg_impls"),       \
+                      aligned(sizeof(addr_t))))                        \
+       = impl;
+
+
+
+
 #endif // ! __V3VEE__
 
 #endif