X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Fx86%2Fmm_virt.c;h=6fa491b8c4762ecc33f6fc27dedb7589bd1ead36;hb=05e8ae6b8fd960b2d9d3dafb34263fe7bd1cb90b;hp=b4fd2225a3d90616c3c7d4883efb8f137ff4a0a7;hpb=ed7804028b2b11be0703677aa8eb643a811e5027;p=tpg%2Facess2.git

diff --git a/Kernel/arch/x86/mm_virt.c b/Kernel/arch/x86/mm_virt.c
index b4fd2225..6fa491b8 100644
--- a/Kernel/arch/x86/mm_virt.c
+++ b/Kernel/arch/x86/mm_virt.c
@@ -524,6 +524,19 @@ void MM_SetFlags(Uint VAddr, Uint Flags, Uint Mask)
 		if( Flags & MM_PFLAG_KERNEL )	*ent &= ~PF_USER;
 		else	*ent |= PF_USER;
 	}
+	
+	// Copy-On-Write
+	if( Mask & MM_PFLAG_COW )
+	{
+		if( Flags & MM_PFLAG_COW ) {
+			*ent &= ~PF_WRITE;
+			*ent |= PF_COW;
+		}
+		else {
+			*ent &= ~PF_COW;
+			*ent |= PF_WRITE;
+		}
+	}
 }
 
 /**