X-Git-Url: https://git.ucc.asn.au/?p=tpg%2Facess2.git;a=blobdiff_plain;f=Kernel%2Farch%2Fx86%2Fvm8086.c;h=6d60d9b141f82227feec3da393257f982cf0b19a;hp=ef449d45db3603cb2897e1bb5d6e7c6b85f5c411;hb=c205f388f8722a5d73f71ee98b0232444c5c7e9d;hpb=0302a53b419f8c56193c75bcbd068cc89ae4df0b

diff --git a/Kernel/arch/x86/vm8086.c b/Kernel/arch/x86/vm8086.c
index ef449d45..6d60d9b1 100644
--- a/Kernel/arch/x86/vm8086.c
+++ b/Kernel/arch/x86/vm8086.c
@@ -89,7 +89,8 @@ int VM8086_Install(char **Arguments)
 		for(i=1;i<0x9F;i++) {
 			MM_Map( i * 0x1000, i * 0x1000 );
 			MM_DerefPhys( i * 0x1000 );	// Above
-			MM_DerefPhys( i * 0x1000 );	// Phys setup
+			if(MM_GetRefCount(i*0x1000))
+				MM_DerefPhys( i * 0x1000 );	// Phys setup
 		}
 		MM_Map( 0x9F000, 0x9F000 );	// Stack / EBDA
 		// System Stack / Stub