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From: Olof Johansson <olof@lixom•net>
To: Jimi Xenidis <jimix@watson•ibm.com>
Cc: linuxppc-dev@ozlabs•org, paulus@samba•org
Subject: Re: [PATCH] powerpc: MPIC: support more than 256 sources
Date: Thu, 25 Jan 2007 16:16:58 -0600	[thread overview]
Message-ID: <20070125221658.GA22587@lixom.net> (raw)
In-Reply-To: <4E97B8B2-51B5-4914-9203-534006D3F5BD@watson.ibm.com>

On Thu, Jan 25, 2007 at 04:37:31PM -0500, Jimi Xenidis wrote:
> Why is this a flag and not just passed into mpic_alloc()?

I didn't want to make it automatic because the openpic specification says
you only have to support 8-bit vectors. So if there's an implementation
out there with 256 sources and only 8-bit vectors (and we put IPI/timers
above 256), things will break instead of the uppermost sources just not
being usable/valid.

If noone is worried about that, then I'm fine with doing it automatically
instead.

-Olof

  reply	other threads:[~2007-01-25 22:11 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-25 21:38 [PATCH] powerpc: MPIC: support more than 256 sources Olof Johansson
2007-01-25 21:37 ` Jimi Xenidis
2007-01-25 22:16   ` Olof Johansson [this message]
2007-01-26  0:49 ` Michael Ellerman
2007-01-29  2:58   ` Olof Johansson
2007-01-29  5:33 ` [PATCH] [v2] " Olof Johansson
2007-01-29  7:23   ` Michael Ellerman

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