From: Linus Torvalds <torvalds@osdl.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Pavel Pisa <pisa@cmp.felk.cvut.cz>,
Ingo Molnar <mingo@redhat.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
trivial@rustcorp.com.au
Subject: Re: VM86 interrupt emulation breakage and FIXes for 2.6.x kernel series
Date: Fri, 10 Dec 2004 17:23:02 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.58.0412101722010.31040@ppc970.osdl.org> (raw)
In-Reply-To: <1102723114.4774.9.camel@localhost.localdomain>
On Fri, 10 Dec 2004, Alan Cox wrote:
>
> On Gwe, 2004-12-10 at 22:55, Linus Torvalds wrote:
> > On Fri, 10 Dec 2004, Alan Cox wrote:
> > The vm86 interrupt does not allow sharing. And it really _has_ to be
> > disabled until user mode has cleared the irq source, or you'll have a very
> > dead machine.
>
> Until the 10,000th event it actually seems to work rather happily
> without that change.
I suspect you never tried the level-triggered case.
In the level-triggered case, the 10,000 interrupts happen faster than
user-mode can even say "Whaaa?".
Linus
next prev parent reply other threads:[~2004-12-11 1:23 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-09 13:59 Pavel Pisa
2004-12-09 16:09 ` Linus Torvalds
2004-12-10 21:05 ` Alan Cox
2004-12-10 22:55 ` Linus Torvalds
2004-12-10 23:58 ` Alan Cox
2004-12-11 1:23 ` Linus Torvalds [this message]
2004-12-11 0:57 ` Alan Cox
2004-12-11 2:30 ` Pavel Pisa
2004-12-11 4:21 ` Linus Torvalds
2004-12-11 14:19 ` Alan Cox
2004-12-11 18:45 ` Linus Torvalds
2004-12-11 18:46 ` Alan Cox
2005-04-26 8:49 ` [PATCH] Linux 2.6.x VM86 interrupt emulation fixes - the second round Pavel Pisa
2004-12-11 2:07 ` VM86 interrupt emulation breakage and FIXes for 2.6.x kernel series Pavel Pisa
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