SPU: cpu_work() fixup, fix recursion in AV handler

Utilities/Thread.cpp

@@ -1231,6 +1231,11 @@ bool handle_access_violation(u32 addr, bool is_writing, x64_context* context) no
 
 		bool handled = rsx::g_access_violation_handler(addr, is_writing);
 
+		if (cpu)
+		{
+			cpu->state += cpu_flag::temp;
+		}
+
 		if (handled)
 		{
 			g_tls_fault_rsx++;
@@ -1389,11 +1394,6 @@ bool handle_access_violation(u32 addr, bool is_writing, x64_context* context) no
 
 	if (vm::check_addr(addr, is_writing ? vm::page_writable : vm::page_readable))
 	{
-		if (cpu && cpu->test_stopped())
-		{
-			//
-		}
-
 		return true;
 	}
 

rpcs3/Emu/Cell/SPUThread.cpp

@@ -1657,14 +1657,20 @@ void spu_thread::cpu_task()
 
 void spu_thread::cpu_work()
 {
+	if (std::exchange(in_cpu_work, true))
+	{
+		return;
+	}
+
 	const auto timeout = +g_cfg.core.mfc_transfers_timeout;
 
 	// If either MFC size exceeds limit or timeout has been reached execute pending MFC commands
 	if (mfc_size > g_cfg.core.mfc_transfers_shuffling || (timeout && get_system_time() - mfc_last_timestamp >= timeout))
 	{
 		do_mfc(false, false);
-		check_mfc_interrupts(pc + 4);
 	}
+
+	in_cpu_work = false;
 }
 
 struct raw_spu_cleanup
@@ -3187,6 +3193,11 @@ bool spu_thread::process_mfc_cmd()
 		// Process MFC commands
 		do_mfc();
 
+		if (mfc_size < 16)
+		{
+			break;
+		}
+
 		auto old = state.add_fetch(cpu_flag::wait);
 
 		if (is_stopped(old))

rpcs3/Emu/Cell/SPUThread.h

@@ -778,6 +778,8 @@ class spu_thread : public cpu_thread
 	u64 mfc_dump_idx = 0;
 	static constexpr u32 max_mfc_dump_idx = 2048;
 
+	bool in_cpu_work = false;
+
 	std::array<v128, 0x4000> stack_mirror; // Return address information
 
 	const char* current_func{}; // Current STOP or RDCH blocking function