From: "H. Peter Anvin" <hpa@zytor.com>
To: alon.barlev@gmail.com, "H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] [REPOST] x86_64, i386: Add command line length to boot protocol
Date: Thu, 15 Mar 2007 17:42:46 -0700 [thread overview]
Message-ID: <45F9E806.2010405@zytor.com> (raw)
In-Reply-To: <20070315210516.GA28998@strauss.suse.de>
Bernhard Walle wrote:
> Because the command line is increased to 2048 characters after 2.6.21,
> it's not possible for boot loaders and userspace tools to determine the length
> of the command line the kernel can understand. The benefit of knowing the
> length is that users can be warned if the command line size is too long which
> prevents surprise if things don't work after bootup.
>
> This patch updates the boot protocol to contain a field called
> "cmdline_size" that contain the length of the command line (excluding
> the terminating zero).
>
> The patch also adds missing fields (of protocol version 2.05) to the x86_64
> setup code.
>
>
> Signed-off-by: Bernhard Walle <bwalle@suse.de>
> Cc: Alon Bar-Lev <alon.barlev@gmail.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
prev parent reply other threads:[~2007-03-16 0:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-15 21:05 [PATCH] [REPOST] x86_64, i386: Add command line length to boot protocol Bernhard Walle
2007-03-15 21:16 ` Alon Bar-Lev
2007-03-15 23:40 ` H. Peter Anvin
2007-03-16 0:42 ` H. Peter Anvin [this message]
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