Re: [PATCH 00/16] dyn_array and nr_irqs support v2

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From: H. Peter Anvin
Date: Saturday, August 2, 2008 - 8:41 am

Eric W. Biederman wrote:

Urk!  First of all, there isn't enough space as we have already proven 
(on the machines where it actually matters there just aren't enough 
bits), but doing this kind of stuff *optionally* is going to hurt even 
worse.

Furthermore, this crap will break anyway the *next* time someone comes 
up with a new clever way to do interrupts -- and to truly get stable 
identifiers, we can't treat HyperTransport MSI as APICs anymore, yadda, 
yadda...


If changing to non-numbers in /proc/interrupts will break userspace, 
then userspace will have to deal with a numeric token in 
/proc/interrupts which will have to be looked up elsewhere (perhaps in a 
sysfs directory) to get a more meaningful index.

	-hpa
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Messages in current thread:
[PATCH 00/16] dyn_array and nr_irqs support v2, Yinghai Lu, (Fri Aug 1, 2:37 am)
[PATCH 01/16] x86: 64bit support more than 256 irq, Yinghai Lu, (Fri Aug 1, 2:37 am)
[PATCH 02/16] x86: introduce nr_irqs for 64bit v3, Yinghai Lu, (Fri Aug 1, 2:37 am)
[PATCH 03/16] add dyn_array support, Yinghai Lu, (Fri Aug 1, 2:37 am)
[PATCH 04/16] make irq_timer_state to use dyn_array, Yinghai Lu, (Fri Aug 1, 2:37 am)
[PATCH 05/16] make irq2_iommu to use dyn_array, Yinghai Lu, (Fri Aug 1, 2:37 am)
[PATCH 06/16] make irq_desc to use dyn_array, Yinghai Lu, (Fri Aug 1, 2:37 am)
[PATCH 07/16] x86: make 64bit support dyn_array, Yinghai Lu, (Fri Aug 1, 2:37 am)
[PATCH 09/16] add per_cpu_dyn_array support, Yinghai Lu, (Fri Aug 1, 2:37 am)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Eric W. Biederman, (Fri Aug 1, 1:46 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Yinghai Lu, (Fri Aug 1, 2:30 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Mike Travis, (Fri Aug 1, 2:47 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Yinghai Lu, (Fri Aug 1, 2:57 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Yinghai Lu, (Fri Aug 1, 3:10 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Eric W. Biederman, (Fri Aug 1, 3:38 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Eric W. Biederman, (Fri Aug 1, 3:45 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Yinghai Lu, (Fri Aug 1, 6:09 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, H. Peter Anvin, (Fri Aug 1, 6:36 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Eric W. Biederman, (Fri Aug 1, 6:41 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Yinghai Lu, (Fri Aug 1, 7:01 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, H. Peter Anvin, (Fri Aug 1, 7:03 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Eric W. Biederman, (Fri Aug 1, 7:39 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Yinghai Lu, (Fri Aug 1, 7:58 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, H. Peter Anvin, (Fri Aug 1, 8:28 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Eric W. Biederman, (Fri Aug 1, 9:42 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, H. Peter Anvin, (Sat Aug 2, 8:41 am)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Eric W. Biederman, (Sat Aug 2, 1:20 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Mike Travis, (Mon Aug 4, 5:57 am)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, H. Peter Anvin, (Mon Aug 4, 7:38 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, Eric W. Biederman, (Mon Aug 4, 8:40 pm)
Re: [PATCH 00/16] dyn_array and nr_irqs support v2, H. Peter Anvin, (Mon Aug 4, 8:48 pm)