From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: mikulas@artax.karlin.mff.cuni.cz (Mikulas Patocka)
Cc: dennis@etinc.com (Dennis),
matti.aarnio@zmailer.org (Matti Aarnio),
linux-kernel@vger.kernel.org
Subject: Re: SMP in 2.4
Date: Sat, 21 Apr 2001 01:16:04 +0100 (BST) [thread overview]
Message-ID: <E14ql4I-0002Yh-00@the-village.bc.nu> (raw)
In-Reply-To: <Pine.LNX.3.96.1010421013436.8002A-100000@artax.karlin.mff.cuni.cz> from "Mikulas Patocka" at Apr 21, 2001 01:53:42 AM
> testb %al, intr_pending
> jnz somewhere_away_to_handle_defered_interrupt
>
> And - of course - interrupt checks intr_lock in its entry and if it is
> zero, sets intr_pending and exits immediatelly.
And immediately gets called again. You have to mask the irq which is non trivial
especially if you want to do it right on the BX. But you can do this and rtlinux
does
next prev parent reply other threads:[~2001-04-21 0:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-04-18 15:12 2.4.3 - Kernel panic Aleksey I Zavilohin
2001-04-18 15:08 ` SMP in 2.4 Dennis
2001-04-18 16:21 ` Mark Hahn
2001-04-18 17:00 ` Richard B. Johnson
2001-04-18 18:05 ` Matti Aarnio
2001-04-18 22:44 ` Dennis
2001-04-20 23:53 ` Mikulas Patocka
2001-04-21 0:16 ` Alan Cox [this message]
2001-04-21 9:08 ` Mikulas Patocka
2001-04-21 9:50 ` Alan Cox
2001-04-21 11:41 ` Mikulas Patocka
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