From: Daniel Jacobowitz <dan@debian.org>
To: Takashi Ikebe <ikebe.takashi@lab.ntt.co.jp>
Cc: "David S. Miller" <davem@davemloft.net>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i386 & x86_64: Live Patching Funcion on 2.6.11.7
Date: Mon, 18 Apr 2005 00:41:16 -0400 [thread overview]
Message-ID: <20050418044115.GA15002@nevyn.them.org> (raw)
In-Reply-To: <42631043.7000409@lab.ntt.co.jp>
On Mon, Apr 18, 2005 at 10:41:23AM +0900, Takashi Ikebe wrote:
> Daniel-san,
> GDB based approach seems not fit to our requirements. GDB(ptrace) based
> functions are basically need to be done when target process is stopping.
> From our experience, sometimes patches became to dozens to hundreds at
> one patching, and in this case GDB based approach cause target process's
> availability descent.
That's right, it does require the target process be stopped. If it
isn't stopped how do you know it isn't executing the same instruction
you're currently patching?
Even with hundreds of kilobytes of patch, I have trouble imagining this
takes a substantial amount of time.
--
Daniel Jacobowitz
CodeSourcery, LLC
next prev parent reply other threads:[~2005-04-18 4:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-17 3:47 [PATCH] i386 & x86_64: Live Patching Funcion on 2.6.11.7 Takashi Ikebe
2005-04-17 6:44 ` David S. Miller
2005-04-17 18:51 ` Daniel Jacobowitz
2005-04-17 20:32 ` David S. Miller
2005-04-18 1:41 ` Takashi Ikebe
2005-04-18 4:41 ` Daniel Jacobowitz [this message]
2005-04-18 5:20 ` Takashi Ikebe
2005-04-23 16:10 ` Andi Kleen
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