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Date: Sun, 8 Dec 2002 12:56:42 -0800
From: Richard Henderson <rth@twiddle.net>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: Patrick Mochel <mochel@osdl.org>, Willy Tarreau <willy@w.ods.org>,
       Petr Vandrovec <VANDROVE@vc.cvut.cz>, linux-kernel@vger.kernel.org,
       jgarzik@pobox.com
Subject: Re: /proc/pci deprecation?
Message-ID: <20021208125642.A22545@twiddle.net>
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	Patrick Mochel <mochel@osdl.org>, Willy Tarreau <willy@w.ods.org>,
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On Sat, Dec 07, 2002 at 08:21:21PM -0800, Linus Torvalds wrote:
> >         Flags: bus master, medium devsel, latency 16, IRQ 19
> 
> Just out of interest, where _does_ it get the information? Does it try to
> do its own irq routing (bad!) or does it do it from /proc/bus/pci/devices?

It just reports what's in the PCI_INTERRUPT_LINE register.

At least on Alpha, we wrote into this register during pci
configuration, so the value matches what's in /proc/interrupts.
I guess I always assumed we did the same on x86, but I've
never checked.


r~
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