From: Andrea Arcangeli <andrea@suse.de>
To: Greg KH <greg@kroah.com>
Cc: Christoph Hellwig <hch@suse.de>,
"Martin J. Bligh" <Martin.Bligh@us.ibm.com>,
Hugh Dickins <hugh@veritas.com>,
Rik van Riel <riel@conectiva.com.br>,
Dave McCracken <dmccr@us.ibm.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Creating a per-task kernel space for kmap, user pagetables, et al
Date: Fri, 22 Mar 2002 00:29:24 +0100 [thread overview]
Message-ID: <20020322002924.X16801@dualathlon.random> (raw)
In-Reply-To: <127930000.1016651345@flay> <20020320212341.M4268@dualathlon.random> <20020320203520.A2003@infradead.org> <20020320223425.P4268@dualathlon.random> <20020320214607.A6363@infradead.org> <20020320230002.A16801@dualathlon.random> <20020321195451.GB4110@kroah.com>
On Thu, Mar 21, 2002 at 11:54:51AM -0800, Greg KH wrote:
> On Wed, Mar 20, 2002 at 11:00:02PM +0100, Andrea Arcangeli wrote:
> > But it is much faster to keep the kernel stack always in 4M global
> > tlbs, thus I don't think we need to change that in 2.5. (also USB was
> > used to do dma in the kernel stack, not sure if they changed it
> > recently)
>
> Hopefully all instances of the USB code doing that have now been fixed.
> If anyone sees any USB code that uses the kernel stack for USB
> transfers, please let me know so it can be fixed.
>
> We (the USB group) have always known that this is a bug in our code, so
> don't feel you can't change things just because the USB code might be
> broken by it :)
Glad to hear, thanks!
Andrea
next prev parent reply other threads:[~2002-03-21 23:30 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-20 19:09 Creating a per-task kernel space for kmap, user pagetables, et al Martin J. Bligh
2002-03-20 19:36 ` Rik van Riel
2002-03-20 20:26 ` Andrea Arcangeli
2002-03-20 19:45 ` Christoph Hellwig
2002-03-20 23:39 ` Alan Cox
2002-03-21 4:21 ` Itai Nahshon
2002-03-21 13:34 ` Alan Cox
2002-03-21 14:34 ` Martin J. Bligh
2002-03-21 15:38 ` Itai Nahshon
2002-03-20 19:56 ` Hugh Dickins
2002-03-20 20:23 ` Andrea Arcangeli
2002-03-20 20:35 ` Christoph Hellwig
2002-03-20 21:17 ` Hugh Dickins
2002-03-20 21:38 ` Andrea Arcangeli
2002-03-20 21:34 ` Andrea Arcangeli
2002-03-20 21:46 ` Christoph Hellwig
2002-03-20 22:00 ` Andrea Arcangeli
2002-03-21 19:54 ` Greg KH
2002-03-21 23:29 ` Andrea Arcangeli [this message]
2002-03-21 23:49 ` William Lee Irwin III
2002-03-22 1:20 ` Andrea Arcangeli
2002-03-20 22:10 ` Martin J. Bligh
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