Fixed a bug that caused physical memory allocation to be one-time use

diff --git a/Kernel/Makefile.BuildNum b/Kernel/Makefile.BuildNum
index 40dbf54..fc8e612 100644 (file)
--- a/Kernel/Makefile.BuildNum
+++ b/Kernel/Makefile.BuildNum
@@ -1 +1 @@
-BUILD_NUM = 57
+BUILD_NUM = 59

diff --git a/Kernel/arch/x86/mm_phys.c b/Kernel/arch/x86/mm_phys.c
index bd8d60e..595a5e9 100644 (file)
--- a/Kernel/arch/x86/mm_phys.c
+++ b/Kernel/arch/x86/mm_phys.c
@@ -352,6 +352,9 @@ void MM_DerefPhys(tPAddr Addr)
        // Lock Structures
        LOCK( &giPhysAlloc );
        
+       if( giLastPossibleFree < Addr )
+               giLastPossibleFree = Addr;
+
        // Dereference
        gaPageReferences[ Addr ] --;