From: Andi Kleen <ak@muc.de>
To: "David S. Miller" <davem@davemloft.net>
Cc: jesper.juhl@gmail.com, mru@inprovide.com, rommer@active.by,
bernd@firmix.at, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: udp.c
Date: Tue, 14 Jun 2005 01:53:56 +0200 [thread overview]
Message-ID: <m1fyvlbyp7.fsf@muc.de> (raw)
In-Reply-To: <20050613.162052.41635836.davem@davemloft.net> (David S. Miller's message of "Mon, 13 Jun 2005 16:20:52 -0700 (PDT)")
"David S. Miller" <davem@davemloft.net> writes:
> From: Herbert Xu <herbert@gondor.apana.org.au>
> Date: Tue, 14 Jun 2005 09:04:22 +1000
>
>> On Mon, Jun 13, 2005 at 02:57:16PM -0700, David S. Miller wrote:
>> > From: Herbert Xu <herbert@gondor.apana.org.au>
>> > Date: Tue, 14 Jun 2005 07:42:52 +1000
>> >
>> > > It'll dump the stack anyway if we just make it a NULL pointer.
>> >
>> > Some platforms don't handle that very cleanly, for example
>> > it may be necessary to have something mapped at page zero
>> > for one reason or another.
>>
>> Are there any existing platforms that do that in kernel mode?
>
> X86 did, especially during bootup, for a long time.
Still does, as does x86-64, but actually it could be changed now using
change_page_attr (and then later undoing it). Is it worth it?
-Andi
next prev parent reply other threads:[~2005-06-13 23:56 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-06-13 11:57 udp.c Rommer
2005-06-13 12:03 ` udp.c Bernd Petrovitsch
2005-06-13 12:24 ` udp.c Måns Rullgård
2005-06-13 12:34 ` udp.c Bernd Petrovitsch
2005-06-13 12:54 ` udp.c Rommer
2005-06-13 12:57 ` udp.c Bernd Petrovitsch
2005-06-13 13:00 ` udp.c Måns Rullgård
2005-06-13 17:23 ` udp.c Jesper Juhl
2005-06-13 19:45 ` udp.c David S. Miller
2005-06-13 21:42 ` udp.c Herbert Xu
2005-06-13 21:57 ` udp.c David S. Miller
2005-06-13 23:04 ` udp.c Herbert Xu
2005-06-13 23:20 ` udp.c David S. Miller
2005-06-13 23:53 ` Andi Kleen [this message]
2005-06-14 0:00 ` udp.c David S. Miller
2005-06-14 0:12 ` udp.c Andi Kleen
2005-06-14 1:11 ` udp.c David S. Miller
2005-06-13 12:08 ` udp.c Adrian Bunk
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