fix: use rounded bitmap size in VMM kernel mapping calculation

2026-05-02 23:17:09 +04:00
parent 5673c44a99
commit 7ff9f4ad4c
1 changed files with 27 additions and 26 deletions
@@ -155,7 +155,8 @@ void VMMInitialize(VMBootMemoryMap* bootMap, Bootinfo* info) {
    }
    OSLog("RAM mapped\n");

-    Size pmmBitmapSize = (bootMap->totalRAM.size / kVMPageSize) / 8;
+    Size totalPages = bootMap->totalRAM.size / kVMPageSize;
+    Size pmmBitmapSize = (totalPages + kVMBlocksPerByte - 1) / kVMBlocksPerByte;
    Size kernelSize = ((Address)_kernelEnd - (Address)_kernelStart) + pmmBitmapSize;
    kernelSize = (kernelSize + kVMPageSize - 1) & ~(kVMPageSize - 1);