#include <palacios/vmm_util.h>
#include <palacios/vmm_paging.h>
#include <palacios/vmm_hashtable.h>
+#include <palacios/vmm_list.h>
+#include <palacios/vmm_msr.h>
+#include <palacios/vmm_lock.h>
+#include <palacios/vmm_config.h>
-struct shadow_page_state {
+struct guest_info;
- // virtualized control registers
- v3_reg_t guest_cr3;
- v3_reg_t guest_cr0;
+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 (*local_deinit)(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);
+};
- // these two reflect the top-level page directory
- // of the shadow page table
- // v3_reg_t shadow_cr3;
+struct v3_shdw_impl_state {
+
+ struct v3_shdw_pg_impl * current_impl;
+ void * impl_data;
- // Hash table that ties a CR3 value to a hash table pointer for the PT entries
- struct hashtable * cr3_cache;
- // Hash table that contains a mapping of guest pte addresses to host pte addresses
- struct hashtable * cached_ptes;
- addr_t cached_cr3;
+ v3_rw_lock_t event_callback_lock;
+ struct list_head event_callback_list;
};
+struct v3_shdw_pg_state {
+ // virtualized control registers
+ v3_reg_t guest_cr3;
+ v3_reg_t guest_cr0;
+ v3_msr_t guest_efer;
+ v3_reg_t guest_cr4;
-struct guest_info;
+ void * local_impl_data;
+
+#ifdef V3_CONFIG_SHADOW_PAGING_TELEMETRY
+ uint_t guest_faults;
+#endif
+};
+
+struct v3_shdw_pg_event {
+ enum {SHADOW_PAGEFAULT,SHADOW_INVLPG,SHADOW_INVALIDATE,SHADOW_ACTIVATE} event_type;
+ enum {SHADOW_PREIMPL, SHADOW_POSTIMPL} event_order;
+ addr_t gva; // for pf and invlpg
+ pf_error_t error_code; // for pf
+};
-int v3_init_shadow_page_state(struct guest_info * info);
+int v3_init_shdw_impl(struct v3_vm_info * vm);
+int v3_deinit_shdw_impl(struct v3_vm_info * vm);
+int v3_init_shdw_pg_state(struct guest_info * core);
+int v3_deinit_shdw_pg_state(struct guest_info * core);
+
+/* 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);
-/* TODO: Change to static functions
- * External visibility not needed
- */
-addr_t v3_create_new_shadow_pt();
-int v3_cache_page_tables32(struct guest_info * info, addr_t pde);
-int v3_replace_shdw_page32(struct guest_info * info, addr_t location, pte32_t * new_page, pte32_t * old_page);
-/* *** */
+/* 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_register_shadow_paging_event_callback(struct v3_vm_info *vm,
+ int (*callback)(struct guest_info *core,
+ struct v3_shdw_pg_event *event,
+ void *priv_data),
+ void *priv_data);
+
+int v3_unregister_shadow_paging_event_callback(struct v3_vm_info *vm,
+ int (*callback)(struct guest_info *core,
+ struct v3_shdw_pg_event *event,
+ void *priv_data),
+ void *priv_data);
+
+
+
+
+int V3_init_shdw_paging();
+int V3_deinit_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;
+
-int v3_replace_shdw_page(struct guest_info * info, addr_t location, void * new_page, void * old_page);
#endif // ! __V3VEE__
