Re: [PATCH v2 07/15] MIPS: IP27: clean out sn/nmi.h

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On Fri, Nov 04, 2022 at 03:50:02PM +0100, Thomas Bogendoerfer wrote:
> On Wed, Nov 02, 2022 at 12:05:30AM +0100, Ahelenia Ziemiańska wrote:
> > The only user is arch/mips/sgi-ip27/ip27-nmi.c; this file was imported
> > wholesale in 2.3.99pre9-1, and received only whitespace updates since
> > then.
> > 
> > NMI_MAGIC isn't a magic number; it's unclear if it's actually used by
> > the firmware in some capacity or if it's a holdover from copying the SGI
> > code, but in the former case it's API and in the latter it's dead cruft.
> 
> it's used by firmware and Linux code to register the NMI exception
> handler.
Great, I'll put that in the message.

> Please leave arch/mips/include/asm/sn/nmi.h untouched as
> it's documents firmware NMI handler usage (even when we don't use it, yet).
"Yet".
This file appeared in 2.3.99pre9-1, and hasn't changed since.
I removed hard-coded assembly struct offsets, which we'll never use,
because we /haven't/ used them, and this part is implemented in C.
This file's my age, and these parts have been dead for just as long.

Yet.

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