VM86 patch

RFC New Kasper Dupont 1 participant 1 message Jan 5, 2003

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Kasper Dupont

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2003-01-05 10:39 UTC #0 lore raw

RFC 1/1 VM86 patch

Is there some reason for not applying
http://dosemu.sourceforge.net/stas/traps.diff
to the 2.5 kernel? Or was it just forgotten?

I have attached a version that applies cleanly
to 2.5.54.

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arch/i386/kernel/traps.c +6 -2

diff -Nur linux.old/arch/i386/kernel/traps.c linux.new/arch/i386/kernel/traps.c
@@ -320,8 +320,12 @@
 static inline void do_trap(int trapnr, int signr, char *str, int vm86,
 			   struct pt_regs * regs, long error_code, siginfo_t *info)
 {
-	if (vm86 && regs->eflags & VM_MASK)
-		goto vm86_trap;
+	if (regs->eflags & VM_MASK) {
+		if (vm86)
+			goto vm86_trap;
+		else
+			goto trap_signal;
+	}
 
 	if (!(regs->xcs & 3))
 		goto kernel_trap;