symbiotic swap updates

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

diff --git a/palacios/src/palacios/vmm_shadow_paging.c b/palacios/src/palacios/vmm_shadow_paging.c
index b2d3b6c..eeb493b 100644 (file)
--- a/palacios/src/palacios/vmm_shadow_paging.c
+++ b/palacios/src/palacios/vmm_shadow_paging.c
@@ -30,7 +30,11 @@
 
 #include <palacios/vmm_direct_paging.h>
 
-#ifndef DEBUG_SHADOW_PAGING
+#ifdef CONFIG_SYMBIOTIC_SWAP
+#include <palacios/vmm_sym_swap.h>
+#endif
+
+#ifndef CONFIG_DEBUG_SHADOW_PAGING
 #undef PrintDebug
 #define PrintDebug(fmt, args...)
 #endif
@@ -51,7 +55,7 @@ struct shadow_page_data {
 
 
 static struct shadow_page_data * create_new_shadow_pt(struct guest_info * info);
-static void inject_guest_pf(struct guest_info * info, addr_t fault_addr, pf_error_t error_code);
+static int inject_guest_pf(struct guest_info * info, addr_t fault_addr, pf_error_t error_code);
 static int is_guest_pf(pt_access_status_t guest_access, pt_access_status_t shadow_access);
 
 
@@ -66,6 +70,7 @@ int v3_init_shadow_page_state(struct guest_info * info) {
   
     state->guest_cr3 = 0;
     state->guest_cr0 = 0;
+    state->guest_efer.value = 0x0LL;
 
     INIT_LIST_HEAD(&(state->page_list));
   
@@ -235,13 +240,17 @@ static struct shadow_page_data * create_new_shadow_pt(struct guest_info * info)
 }
 
 
-static void inject_guest_pf(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
+static int inject_guest_pf(struct guest_info * info, addr_t fault_addr, pf_error_t error_code) {
+
+#ifdef CONFIG_PROFILE_VMM
     if (info->enable_profiler) {
        info->profiler.guest_pf_cnt++;
     }
+#endif
 
     info->ctrl_regs.cr2 = fault_addr;
-    v3_raise_exception_with_error(info, PF_EXCEPTION, *(uint_t *)&error_code);
+
+    return v3_raise_exception_with_error(info, PF_EXCEPTION, *(uint_t *)&error_code);
 }
 
 
@@ -264,12 +273,19 @@ static int is_guest_pf(pt_access_status_t guest_access, pt_access_status_t shado
            return 1;
        }
 
-       if ((shadow_access == PT_ACCESS_NOT_PRESENT) &&
-           (guest_access == PT_ACCESS_NOT_PRESENT)) {
+       /*
+         if ((shadow_access == PT_ACCESS_NOT_PRESENT) &&
+         (guest_access == PT_ACCESS_NOT_PRESENT)) {
+         // Page tables completely blank, handle guest first
+         return 1;
+         }
+       */
+
+       if (guest_access == PT_ACCESS_NOT_PRESENT) {
            // Page tables completely blank, handle guest first
            return 1;
        }
-
+       
        // Otherwise we'll handle the guest fault later...?
     }