From: Ingo Molnar <mingo@elte.hu>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
linuxppc64-dev <linuxppc64-dev@ozlabs.org>,
Linus Torvalds <torvalds@osdl.org>,
Paul Mackerras <paulus@samba.org>,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [PATCH] generic irq subsystem: ppc64 port
Date: Tue, 19 Oct 2004 11:15:57 +0200 [thread overview]
Message-ID: <20041019091557.GA17473@elte.hu> (raw)
In-Reply-To: <1098174500.11449.65.camel@gaston>
* Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:
> I still like the idea of the patch, so it would be useful if you added
> the possibility for us to just change that behaviour, that is replace
> all occursences of irq_descs + i with get_irq_desc() and provide a
> generic one that just does that, with a #ifndef so that the
> architecture can provide it's own.
sure, we could do that. But since there are other architectures with
large irq-vector spaces too, you might want to try to move it into the
generic IRQ code and just provide a way to switch between 1:1 mapped and
sparse-mapped variants.
(of course this still means all of the direct indexing in kernel/irq/*.c
would have to change.)
Ingo
next prev parent reply other threads:[~2004-10-19 9:14 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200410190714.i9J7Elnx027734@hera.kernel.org>
2004-10-19 8:28 ` [PATCH] generic irq subsystem: ppc64 port Benjamin Herrenschmidt
2004-10-19 8:41 ` Christoph Hellwig
2004-10-19 9:15 ` Ingo Molnar [this message]
2004-10-20 1:24 ` Benjamin Herrenschmidt
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