xnu-2050.18.24.tar.gz

[apple/xnu.git] / iokit / Kernel / IOPlatformExpert.cpp

diff --git a/iokit/Kernel/IOPlatformExpert.cpp b/iokit/Kernel/IOPlatformExpert.cpp
index 03779d4b104d050e8f315f8da7cf026bd0b6e8c4..e7f39347403068941d3adb6b380082353ba7f806 100644 (file)
--- a/iokit/Kernel/IOPlatformExpert.cpp
+++ b/iokit/Kernel/IOPlatformExpert.cpp
@@ -105,7 +105,9 @@ bool IOPlatformExpert::start( IOService * provider )
     // Override the mapper present flag is requested by boot arguments.
     if (PE_parse_boot_argn("dart", &debugFlags, sizeof (debugFlags)) && (debugFlags == 0))
       removeProperty(kIOPlatformMapperPresentKey);
-    
+    if (PE_parse_boot_argn("-x", &debugFlags, sizeof (debugFlags)))
+      removeProperty(kIOPlatformMapperPresentKey);
+
     // Register the presence or lack thereof a system 
     // PCI address mapper with the IOMapper class
     IOMapper::setMapperRequired(0 != getProperty(kIOPlatformMapperPresentKey));