added swapbypass paging implemenation

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

diff --git a/palacios/src/palacios/vmm_shdw_pg_swapbypass.c b/palacios/src/palacios/vmm_shdw_pg_swapbypass.c
index 282c697..2330f6d 100644 (file)
--- a/palacios/src/palacios/vmm_shdw_pg_swapbypass.c
+++ b/palacios/src/palacios/vmm_shdw_pg_swapbypass.c
@@ -18,7 +18,10 @@
  */
 
 #include <palacios/vmm_shadow_paging.h>
+#include <palacios/vmm_ctrl_regs.h>
 
+#include <palacios/vm_guest.h>
+#include <palacios/vm_guest_mem.h>
 
 struct shadow_page_data {
     v3_reg_t cr3;
@@ -28,37 +31,39 @@ struct shadow_page_data {
 };
 
 
-struct vtlb_state {
+struct swapbypass_local_state {
  
     struct list_head page_list;
 
 };
 
 
-static struct shadow_page_data * create_new_shadow_pt(struct guest_info * info);
+static struct shadow_page_data * create_new_shadow_pt(struct guest_info * core);
 
 
-#include "vmm_shdw_pg_tlb_32.h"
-#include "vmm_shdw_pg_tlb_32pae.h"
-#include "vmm_shdw_pg_tlb_64.h"
+#include "vmm_shdw_pg_swapbypass_32.h"
+#include "vmm_shdw_pg_swapbypass_32pae.h"
+#include "vmm_shdw_pg_swapbypass_64.h"
 
 
-static struct shadow_page_data * create_new_shadow_pt(struct guest_info * info) {
-    struct shadow_page_state * state = &(info->shdw_pg_state);
-    v3_reg_t cur_cr3 = info->ctrl_regs.cr3;
+static struct shadow_page_data * create_new_shadow_pt(struct guest_info * core) {
+    struct v3_shdw_pg_state * state = &(core->shdw_pg_state);
+    struct swapbypass_local_state * impl_state = (struct swapbypass_local_state *)(state->local_impl_data);
+    v3_reg_t cur_cr3 = core->ctrl_regs.cr3;
     struct shadow_page_data * page_tail = NULL;
     addr_t shdw_page = 0;
 
-    if (!list_empty(&(state->page_list))) {
-       page_tail = list_tail_entry(&(state->page_list), struct shadow_page_data, page_list_node);
-    
+    if (!list_empty(&(impl_state->page_list))) {
+       page_tail = list_tail_entry(&(impl_state->page_list), struct shadow_page_data, page_list_node);
+
+
        if (page_tail->cr3 != cur_cr3) {
            PrintDebug("Reusing old shadow Page: %p (cur_CR3=%p)(page_cr3=%p) \n",
                       (void *)(addr_t)page_tail->page_pa, 
                       (void *)(addr_t)cur_cr3, 
                       (void *)(addr_t)(page_tail->cr3));
 
-           list_move(&(page_tail->page_list_node), &(state->page_list));
+           list_move(&(page_tail->page_list_node), &(impl_state->page_list));
 
            memset(V3_VAddr((void *)(page_tail->page_pa)), 0, PAGE_SIZE_4KB);
 
@@ -77,7 +82,7 @@ static struct shadow_page_data * create_new_shadow_pt(struct guest_info * info)
               (void *)(addr_t)cur_cr3);
 
     page_tail->cr3 = cur_cr3;
-    list_add(&(page_tail->page_list_node), &(state->page_list));
+    list_add(&(page_tail->page_list_node), &(impl_state->page_list));
 
     shdw_page = (addr_t)V3_VAddr((void *)(page_tail->page_pa));
     memset((void *)shdw_page, 0, PAGE_SIZE_4KB);
@@ -87,18 +92,34 @@ static struct shadow_page_data * create_new_shadow_pt(struct guest_info * info)
 
 
 
-static int vtlb_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg, void ** priv_data) {
-    struct vtlb_state * state = V3_Malloc(sizeof(struct vtlb_state));
+static int sb_init(struct v3_vm_info * vm, v3_cfg_tree_t * cfg) {
+
+    V3_Print("SWAPBYPASS initialization\n");
+    return 0;
+}
+
+static int sb_deinit(struct v3_vm_info * vm) {
+    return -1;
+}
+
+static int sb_local_init(struct guest_info * core) {
+    struct v3_shdw_pg_state * state = &(core->shdw_pg_state);
+    struct swapbypass_local_state * swapbypass_state = NULL;
+
+    V3_Print("SWAPBYPASS local initialization\n");
+
+
+    swapbypass_state = (struct swapbypass_local_state *)V3_Malloc(sizeof(struct swapbypass_local_state));
 
-    INIT_LIST_HEAD(&(state->page_list));
+    INIT_LIST_HEAD(&(swapbypass_state->page_list));
 
-    *priv_data = state;
+    state->local_impl_data = swapbypass_state;
 
     return 0;
 }
 
 
-int vtlb_activate_shdw_pt(struct guest_info * core, void * priv_data) {
+static int sb_activate_shdw_pt(struct guest_info * core) {
     switch (v3_get_vm_cpu_mode(core)) {
 
        case PROTECTED:
@@ -117,12 +138,12 @@ int vtlb_activate_shdw_pt(struct guest_info * core, void * priv_data) {
     return 0;
 }
 
-int vtlb_invalidate_shdw_pt(struct guest_info * core, void * priv_data) {
-    return vtlb_activate_shdw_pt(core, priv_data);
+static int sb_invalidate_shdw_pt(struct guest_info * core) {
+    return sb_activate_shdw_pt(core);
 }
 
 
-int vtlb_handle_pf(struct guest_info * core, addr_t fault_addr, pf_error_t err_code, void * priv_data) {
+static int sb_handle_pf(struct guest_info * core, addr_t fault_addr, pf_error_t error_code) {
 
        switch (v3_get_vm_cpu_mode(core)) {
            case PROTECTED:
@@ -142,7 +163,7 @@ int vtlb_handle_pf(struct guest_info * core, addr_t fault_addr, pf_error_t err_c
 }
 
 
-int vtlb_handle_invlpg(struct guest_info * core, addr_t vaddr, void * priv_data) {
+static int sb_handle_invlpg(struct guest_info * core, addr_t vaddr) {
 
     switch (v3_get_vm_cpu_mode(core)) {
        case PROTECTED:
@@ -158,3 +179,20 @@ int vtlb_handle_invlpg(struct guest_info * core, addr_t vaddr, void * priv_data)
            return -1;
     }
 }
+
+static struct v3_shdw_pg_impl sb_impl =  {
+    .name = "SWAPBYPASS",
+    .init = sb_init,
+    .deinit = sb_deinit,
+    .local_init = sb_local_init,
+    .handle_pagefault = sb_handle_pf,
+    .handle_invlpg = sb_handle_invlpg,
+    .activate_shdw_pt = sb_activate_shdw_pt,
+    .invalidate_shdw_pt = sb_invalidate_shdw_pt
+};
+
+
+
+
+
+register_shdw_pg_impl(&sb_impl);