From: Kumar Gala <galak@kernel.crashing.org>
To: Sethi Varun-B16395 <B16395@freescale.com>
Cc: "Linuxppc-dev@lists.ozlabs.org" <Linuxppc-dev@lists.ozlabs.org>
Subject: Re: [PATCH 3/4] powerpc/mpic: Move internal interrupt source vector allocation to a separate function.
Date: Tue, 27 Mar 2012 09:02:05 -0500 [thread overview]
Message-ID: <BA2352CD-6C54-4D33-86DB-F55DBDBA6E5F@kernel.crashing.org> (raw)
In-Reply-To: <C5ECD7A89D1DC44195F34B25E172658D0B11BA@039-SN2MPN1-013.039d.mgd.msft.net>
On Mar 27, 2012, at 8:52 AM, Sethi Varun-B16395 wrote:
>=20
>=20
>> -----Original Message-----
>> From: Kumar Gala [mailto:galak@kernel.crashing.org]
>> Sent: Tuesday, March 27, 2012 6:55 PM
>> To: Sethi Varun-B16395
>> Cc: Linuxppc-dev@lists.ozlabs.org
>> Subject: Re: [PATCH 3/4] powerpc/mpic: Move internal interrupt source
>> vector allocation to a separate function.
>>=20
>>=20
>> On Mar 27, 2012, at 7:16 AM, Varun Sethi wrote:
>>=20
>>> Allocate vector numbers for MPIC internal interrupt sources (IPIs =
and
>>> Timers) in a separate function.
>>>=20
>>=20
>> Explain why you are making this change.
>=20
>=20
> [Sethi Varun-B16395] With the current code it becomes fairly difficult =
to
> add new internal interrupt sources. In my case I had to add 32 =
additional
> interrupt sources corresponding to the MPIC error interrupts. It's =
more
> convenient doing the internal interrupt source allocation using a =
loop.
I think that is more due to how you added the MPIC error interrupts and =
issues w/that code. If you are treating the MPIC error interrupts as a =
cascade than they should have a distinct linux IRQ space from the =
standard MPIC interrupts. This is how the MSIs work (as an example).
- k=
next prev parent reply other threads:[~2012-03-27 14:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-27 12:16 [PATCH 3/4] powerpc/mpic: Move internal interrupt source vector allocation to a separate function Varun Sethi
2012-03-27 13:24 ` Kumar Gala
2012-03-27 13:52 ` Sethi Varun-B16395
2012-03-27 14:02 ` Kumar Gala [this message]
2012-04-04 19:09 ` Sethi Varun-B16395
2012-04-04 23:29 ` Benjamin Herrenschmidt
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