added symbiotic swap telemetry data

[palacios.git] / palacios / src / palacios / vmm_shadow_paging_32.h

diff --git a/palacios/src/palacios/vmm_shadow_paging_32.h b/palacios/src/palacios/vmm_shadow_paging_32.h
index 03e1f7a..b6ac424 100644 (file)
--- a/palacios/src/palacios/vmm_shadow_paging_32.h
+++ b/palacios/src/palacios/vmm_shadow_paging_32.h
@@ -228,53 +228,62 @@ static int handle_pte_shadow_pagefault_32(struct guest_info * info, addr_t fault
 
        PrintDebug("Access error injecting pf to guest (guest access error=%d) (pf error code=%d)\n", 
                   guest_pte_access, *(uint_t*)&error_code);
+       
 #ifdef CONFIG_SYMBIOTIC_SWAP
-       if ((error_code.write == 0) && (is_swapped_pte32(guest_pte))) {
-           PrintError("Page fault on swapped out page (pte=%x)\n", *(uint32_t *)guest_pte);
-
-           addr_t swp_pg_addr = v3_get_swapped_pg_addr(info, shadow_pte, guest_pte);
+       if (is_swapped_pte32(guest_pte)) {
 
-           if (swp_pg_addr == 0) {
-               if (inject_guest_pf(info, fault_addr, error_code) == -1) {
-                   PrintError("Could not inject guest page fault\n");
-                   return -1;
-               }
+#ifdef CONFIG_SYMBIOTIC_SWAP_TELEMETRY
+           if (error_code.write == 0) {
+               info->swap_state.read_faults++;
            } else {
-               /* 
-                *  Setup shadow paging state
-                */
+               info->swap_state.write_faults++;
+           }
+#endif
+           if (error_code.write == 0) {
+               PrintError("Page fault on swapped out page (pte=%x) (error_code=%x)\n", *(uint32_t *)guest_pte, *(uint32_t *)&error_code);
                
-               /* We need some way to check permissions.... */
+               addr_t swp_pg_addr = v3_get_swapped_pg_addr(info, shadow_pte, guest_pte);
                
-               shadow_pte->accessed = 1;
-               shadow_pte->writable = 0;
-
-               if (fault_addr & 0xc0000000) {
-                   shadow_pte->user_page = 0;
+               if (swp_pg_addr == 0) {
+                   if (inject_guest_pf(info, fault_addr, error_code) == -1) {
+                       PrintError("Could not inject guest page fault\n");
+                       return -1;
+                   }
                } else {
-                   shadow_pte->user_page = 1;
+                   /* 
+                    *  Setup shadow paging state
+                    */
+                   
+                   /* We need some way to check permissions.... */
+                   
+                   shadow_pte->accessed = 1;
+                   shadow_pte->writable = 0;
+                   
+                   if (fault_addr & 0xc0000000) {
+                       shadow_pte->user_page = 0;
+                   } else {
+                       shadow_pte->user_page = 1;
+                   }
+                   
+                   shadow_pte->write_through = 0;
+                   shadow_pte->cache_disable = 0;
+                   shadow_pte->global_page = 0;
+                   
+                   shadow_pte->present = 1;
+                   
+                   shadow_pte->page_base_addr = swp_pg_addr;
                }
-
-               shadow_pte->write_through = 0;
-               shadow_pte->cache_disable = 0;
-               shadow_pte->global_page = 0;
-       
-               shadow_pte->present = 1;
                
-               shadow_pte->page_base_addr = swp_pg_addr;
-           }
-       } else {
-           if (inject_guest_pf(info, fault_addr, error_code) == -1) {
-               PrintError("Could not inject guest page fault\n");
-               return -1;
+               return 0;
            }
        }
-#else
+#endif
+       
+
        if (inject_guest_pf(info, fault_addr, error_code) == -1) {
            PrintError("Could not inject guest page fault\n");
            return -1;
-       }
-#endif
+       }       
 
        return 0; 
     }