From: Yinghai Lu <yinghai@kernel.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Andrew Morton <akpm@linux-foundation.org>,
mingo@elte.hu, tglx@linutronix.de, linux-kernel@vger.kernel.org,
travis@sgi.com
Subject: Re: [PATCH] sparse_irq aka dyn_irq v13
Date: Sun, 16 Nov 2008 16:36:56 -0800 [thread overview]
Message-ID: <4920BCA8.6080600@kernel.org> (raw)
In-Reply-To: <4920BA3A.5090100@zytor.com>
H. Peter Anvin wrote:
>
> It would, however, be a good idea if IOAPICs had their numbers assigned
> at detection time, as opposed to when the interrupt is registered, thus
> making it a stable number for a single boot, at least. The same is
> probably true for MSI(-X); we could assign it a range of numbers when
> the device is enumerated (as opposed to when a driver is activated), but
> I don't know to what extent that is likely to cause more troubles than
> it solves.
how to find the range for MSIX, one device/func may need a lot. for example, niu driver could use 20 MSI-X for one port. (one dev/func)
some could use 256. we only know that when driver is loaded.
So as Eric said, just try to use 12bits (4k range) for them.
YH
next prev parent reply other threads:[~2008-11-17 0:37 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20081023143721.GA25783@elte.hu>
[not found] ` <49012399.4010100@kernel.org>
[not found] ` <20081027164135.GD19476@elte.hu>
[not found] ` <4912B2FE.7030804@kernel.org>
[not found] ` <20081106101715.GA4022@elte.hu>
[not found] ` <4913B45C.1000009@kernel.org>
[not found] ` <20081107081249.GB4435@elte.hu>
[not found] ` <4913F9AA.80500@kernel.org>
[not found] ` <20081107084240.GG4435@elte.hu>
[not found] ` <491434FB.2050904@kernel.org>
[not found] ` <20081107124957.GA21709@elte.hu>
2008-11-09 7:05 ` [RFC PATCH] sparse_irq aka dyn_irq Yinghai Lu
2008-11-09 7:38 ` Ingo Molnar
2008-11-09 8:03 ` Yinghai Lu
2008-11-10 9:40 ` Ingo Molnar
2008-11-10 9:51 ` [PATCH] sparse_irq aka dyn_irq v10 Yinghai Lu
2008-11-10 9:53 ` Ingo Molnar
2008-11-10 9:55 ` Yinghai Lu
2008-11-10 9:57 ` Ingo Molnar
2008-11-10 9:55 ` [RFC PATCH] sparse_irq aka dyn_irq Andrew Morton
2008-11-10 10:00 ` Yinghai Lu
2008-11-10 10:03 ` Ingo Molnar
2008-11-10 10:05 ` Yinghai Lu
2008-11-10 10:09 ` Ingo Molnar
2008-11-10 19:47 ` Yinghai Lu
2008-11-11 6:28 ` [PATCH] sparse_irq aka dyn_irq v11 Yinghai Lu
[not found] ` <491A9F87.8040403@kernel.org>
[not found] ` <20081112120814.GG11352@elte.hu>
2008-11-13 7:01 ` [PATCH] sparse_irq aka dyn_irq v13 Yinghai Lu
2008-11-13 9:53 ` Ingo Molnar
2008-11-13 20:06 ` Yinghai Lu
2008-11-13 20:16 ` Yinghai Lu
2008-11-13 21:18 ` Andrew Morton
2008-11-13 21:21 ` Ingo Molnar
2008-11-13 22:01 ` Yinghai Lu
2008-11-13 22:05 ` Ingo Molnar
2008-11-13 22:13 ` Andrew Morton
2008-11-13 22:41 ` Yinghai Lu
2008-11-13 22:58 ` Andrew Morton
2008-11-13 23:15 ` Mike Travis
2008-11-13 23:24 ` Yinghai Lu
2008-11-14 0:20 ` Mike Travis
2008-11-14 0:29 ` Yinghai Lu
2008-11-14 6:29 ` [PATCH] sparse_irq aka dyn_irq v14 Yinghai Lu
2008-11-14 6:46 ` Andrew Morton
2008-11-15 9:05 ` Yinghai Lu
2008-11-13 22:19 ` [PATCH] sparse_irq aka dyn_irq v13 Paul Mackerras
2008-11-13 22:23 ` David Miller
2008-11-13 23:11 ` Mike Travis
2008-11-13 23:14 ` David Miller
2008-11-14 0:15 ` Mike Travis
2008-11-14 0:21 ` David Miller
2008-11-14 0:39 ` Mike Travis
2008-11-14 2:37 ` David Miller
2008-11-14 3:06 ` Mike Travis
2008-11-16 20:58 ` Benjamin Herrenschmidt
2008-11-16 23:44 ` Yinghai Lu
2008-11-16 23:48 ` H. Peter Anvin
2008-11-16 23:54 ` Yinghai Lu
2008-11-16 23:59 ` H. Peter Anvin
2008-11-17 0:21 ` Yinghai Lu
2008-11-17 0:26 ` H. Peter Anvin
2008-11-17 0:36 ` Yinghai Lu [this message]
2008-11-17 0:48 ` H. Peter Anvin
2008-11-17 0:58 ` Yinghai Lu
2008-11-17 1:00 ` H. Peter Anvin
2008-11-17 2:03 ` Mike Travis
2008-11-17 4:27 ` Benjamin Herrenschmidt
2008-11-17 4:26 ` Benjamin Herrenschmidt
2008-11-17 20:25 ` Jeremy Fitzhardinge
2008-11-17 4:25 ` Benjamin Herrenschmidt
2008-11-17 4:22 ` Benjamin Herrenschmidt
2008-11-17 1:51 ` Mike Travis
2008-11-17 4:39 ` H. Peter Anvin
2008-11-17 4:22 ` Benjamin Herrenschmidt
2008-11-17 4:42 ` H. Peter Anvin
2008-11-17 6:52 ` Benjamin Herrenschmidt
2008-11-09 8:36 ` [RFC PATCH] sparse_irq aka dyn_irq H. Peter Anvin
2008-11-09 7:50 ` Cyrill Gorcunov
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