On Thu, 2005-08-11 at 15:41 +0200, Bodo Eggert wrote: > According to my documentation it isn't. A software interrupt is a far call > with an extra pushf, and a hardware interrupt is protected against recursion > by the PIC, not by an interrupt flag.
I disagree with your definition of a system call. The "int 0x80" changes from user mode to kernel mode so it is much more powerful than a "far call". Also the CPU does protect against recursion and more than one interrupt coming in at the same time. The PIC also works with the CPU in this regard, but as I shown in my previous email, the interrupt flag _does_ protect against it. -- Steve - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
