patch-2.4.20 linux-2.4.20/include/asm-x86_64/bugs.h

• Lines: 35
• Date: Thu Nov 28 15:53:15 2002
• Orig file: linux-2.4.19/include/asm-x86_64/bugs.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.19/include/asm-x86_64/bugs.h linux-2.4.20/include/asm-x86_64/bugs.h
@@ -0,0 +1,34 @@
+/*
+ *  include/asm-x86_64/bugs.h
+ *
+ *  Copyright (C) 1994  Linus Torvalds
+ *  Copyright (C) 2000  SuSE
+ *
+ * This is included by init/main.c to check for architecture-dependent bugs.
+ *
+ * Needs:
+ *	void check_bugs(void);
+ */
+
+#include <linux/config.h>
+#include <asm/processor.h>
+#include <asm/i387.h>
+#include <asm/msr.h>
+#include <asm/pda.h>
+
+static inline void check_fpu(void)
+{
+	extern void __bad_fxsave_alignment(void);
+	if (offsetof(struct task_struct, thread.i387.fxsave) & 15)
+		__bad_fxsave_alignment();
+
+	/* This should not be here */	
+	set_in_cr4(X86_CR4_OSFXSR);
+	set_in_cr4(X86_CR4_OSXMMEXCPT);
+}
+
+static void __init check_bugs(void)
+{
+	identify_cpu(&boot_cpu_data);
+	check_fpu();
+}