Changeset 87777 in vbox for trunk/include/VBox

Timestamp:

Feb 17, 2021 1:48:25 PM (4 years ago)

Author:

vboxsync

Message:

VMM/TRPM: Reduced the VM structure footprint by > 3K and eliminated a hyper heap allocation. bugref:9517

Location:

trunk/include/VBox/vmm

Files:

• vm.h (modified) (2 diffs)
• vm.mac (modified) (2 diffs)

trunk/include/VBox/vmm/vm.h

@@ -1301 +1301 @@
         struct TRPM s;
 #endif
-        uint8_t     padding[5248];      /* multiple of 64 */
+        uint8_t     padding[2048];      /* multiple of 64 */
     } trpm;
 
@@ -1463 +1463 @@
 
     /** Padding for aligning the structure size on a page boundrary. */
-    uint8_t         abAlignment2[4568 - sizeof(PVMCPUR3) * VMM_MAX_CPU_COUNT];
+    uint8_t         abAlignment2[3672 - sizeof(PVMCPUR3) * VMM_MAX_CPU_COUNT];
 
     /* ---- end small stuff ---- */

trunk/include/VBox/vmm/vm.mac

@@ -124 +124 @@
     .pgm                    resb 21120
     .hm                     resb 5504
-    .trpm                   resb 5248
+    .trpm                   resb 2048
     .selm                   resb 768
     .mm                     resb 192
@@ -140 +140 @@
     .R0Stats                resb 64
 
-    .abAlignment2           resb 4568 - RTR0PTR_CB * VMM_MAX_CPU_COUNT
-
-    alignb RTR0PTR_CB * VMM_MAX_CPU_COUNT ; ASSUMES VMM_MAX_CPU_COUNT is a power of two.
+    times ((($ + VMM_MAX_CPU_COUNT * RTR0PTR_CB + 4095) & ~4095) - ($ + VMM_MAX_CPU_COUNT * RTR0PTR_CB)) resb 1
     .apCpusR3               RTR3PTR_RES VMM_MAX_CPU_COUNT
     alignb 4096