linux-kernel - Re: [RFC PATCH 09/33] Add start-of-day setup hooks to subarch

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Message-Id: <1153228038.10819@shark.he.net>
Date:	Tue, 18 Jul 2006 06:07:18 -0700
From:	"Randy Dunlap" <rdunlap@...otime.net>
To:	Arjan van de Ven <arjan@...radead.org>,
	Chris Wright <chrisw@...s-sol.org>,
	linux-kernel@...r.kernel.org, virtualization@...ts.osdl.org,
	xen-devel@...ts.xensource.com,
	Jeremy Fitzhardinge <jeremy@...p.org>, Andi Kleen <ak@...e.de>,
	Andrew Morton <akpm@...l.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Zachary Amsden <zach@...are.com>,
	Ian Pratt <ian.pratt@...source.com>,
	Christian Limpach <Christian.Limpach@...cam.ac.uk>,
	Jeremy Fitzhardinge <jeremy@...source.com>
Subject: Re: [RFC PATCH 09/33] Add start-of-day setup hooks to subarch



> On Tue, 2006-07-18 at 00:00 -0700, Chris Wright wrote:
> > plain text document attachment (i386-setup)
> > Implement the start-of-day subarchitecture setup hooks for booting on
> > Xen. Add subarch macros for determining loader type and initrd
> > location.
> 
> > diff -r a5848bce3730 arch/i386/kernel/setup.c
> > --- a/arch/i386/kernel/setup.c	Thu Jun 22 16:02:54 2006 -0400
> > +++ b/arch/i386/kernel/setup.c	Thu Jun 22 20:20:31 2006 -0400
> > @@ -458,6 +458,7 @@ static void __init print_memory_map(char
> >  	}
> >  }
> >  
> > +#ifndef HAVE_ARCH_E820_SANITIZE
> >  /*
> >   * Sanitize the BIOS e820 map.
> >   *
> > @@ -677,6 +678,7 @@ int __init copy_e820_map(struct e820entr
> >  	} while (biosmap++,--nr_map);
> >  	return 0;
> >  }
> > +#endif
> >  
> Hi,
> 
> what is this for? Isn't this 1) undocumented and 2) unclear and 3)
> ugly ? (I'm pretty sure the HAVE_ARCH_* stuff is highly deprecated for
> new things nowadays)

I've read that Linus doesn't like it (putting it mildly),
but deprecated??  Yes, there are better/other ways.

---
~Randy
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