From: John Hodge <tpg@mutabah.net>
Date: Tue, 24 Aug 2010 02:36:49 +0000 (+0800)
Subject: Fixed TID0 not being on the All Threads list
X-Git-Tag: rel0.06~44
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=3b0cee8ca739fc5c564c78467fdc65c4d83d45a1;p=tpg%2Facess2.git

Fixed TID0 not being on the All Threads list
- Also stopped VM8086 from busy polling
---

diff --git a/Kernel/arch/x86/mm_virt.c b/Kernel/arch/x86/mm_virt.c
index fdc19b14..3c893f8e 100644
--- a/Kernel/arch/x86/mm_virt.c
+++ b/Kernel/arch/x86/mm_virt.c
@@ -919,7 +919,7 @@ tVAddr MM_MapTemp(tPAddr PAddr)
 			return TEMP_MAP_ADDR + (i << 12);
 		}
 		Mutex_Release( &glTempMappings );
-		Threads_Yield();	// TODO: Less expensive
+		Threads_Yield();	// TODO: Use a sleep queue here instead
 	}
 }
 
diff --git a/Kernel/arch/x86/vm8086.c b/Kernel/arch/x86/vm8086.c
index 5253a62d..469ab436 100644
--- a/Kernel/arch/x86/vm8086.c
+++ b/Kernel/arch/x86/vm8086.c
@@ -153,6 +153,7 @@ void VM8086_GPF(tRegs *Regs)
 		//Log_Log("VM8086", "gpVM8086_State = %p, gVM8086_CallingThread = %i",
 		//	gpVM8086_State, gVM8086_CallingThread);
 		if( gpVM8086_State ) {
+			 int	ret;
 			gpVM8086_State->AX = Regs->eax;	gpVM8086_State->CX = Regs->ecx;
 			gpVM8086_State->DX = Regs->edx;	gpVM8086_State->BX = Regs->ebx;
 			gpVM8086_State->BP = Regs->ebp;
@@ -160,8 +161,9 @@ void VM8086_GPF(tRegs *Regs)
 			gpVM8086_State->DS = Regs->ds;	gpVM8086_State->ES = Regs->es;
 			gpVM8086_State = NULL;
 			// Ensure the caller wakes
-			//while(Threads_WakeTID(gVM8086_CallingThread) == -EALREADY)
-			//	Threads_Yield();
+			while( (ret = Threads_WakeTID(gVM8086_CallingThread)) == -EALREADY) {
+				Threads_Yield();
+			}
 		}
 		
 		//Log_Log("VM8086", "Waiting for something to do");
@@ -406,8 +408,8 @@ void VM8086_Int(tVM8086 *State, Uint8 Interrupt)
 	gpVM8086_State = State;
 	gVM8086_CallingThread = Threads_GetTID();
 	Threads_WakeTID( gVM8086_WorkerPID );
-	while( gpVM8086_State != NULL )
-		Threads_Yield();
+	Threads_Sleep();
+	while( gpVM8086_State != NULL )	Threads_Sleep();
 	
 	Mutex_Release( &glVM8086_Process );
 }
diff --git a/Kernel/threads.c b/Kernel/threads.c
index 610f7b5d..9fd052b6 100644
--- a/Kernel/threads.c
+++ b/Kernel/threads.c
@@ -90,6 +90,7 @@ void Threads_Init(void)
 	
 	// Create Initial Task
 	gActiveThreads = &gThreadZero;
+	gAllThreads = &gThreadZero;
 	//giFreeTickets = gThreadZero.NumTickets;
 	giNumActiveThreads = 1;
 		
@@ -313,6 +314,8 @@ tThread *Threads_GetThread(Uint TID)
 		if(thread->TID == TID)
 			return thread;
 	}
+
+	Log("Unable to find TID %i on main list\n", TID);
 	
 	return NULL;
 }