Re: patch for DS3100/DS2100 16.61/12.45 Bogomips

["Harald Koerfgen" <hkoerfg1@ford.com>]

Ralf wrote:

> Just saw that one in your patch:
> 
> > /*
> >  * Where is a simple rfe expected to return to??? HK
> >  * FIXME: what about the BD flag in the cause register?
> >  */
> > #define ERET                                            \
> >                 mfc0 k0,CP0_EPC;                        \
> >                 nop;                                    \
> >                 j k0;                                   \
> >                 rfe
> > 
> 
> You don't need to care about handling of branch delay slots.  The
> only exceptions where one really needs to care about branch delay
> slots are synchronous exceptions like address errors (due to
> missalignment), syscalls (This case is a no-no by definition),
> traps, overflow etc.
> 
> You don't need to care about this; the generic parts of the kernel
> handle this for you.
> 

Good to know. Hacking the DECstation interrupt code was my first MIPS 
and Linux Kernel Hacking experience, and i *am* learning.

>   Ralf

Harald
-- 
regards,
Harald