Re: [PATCH] [REPOST] x86_64, i386: Add command line length to bootprotocol

[H. Peter Anvin]

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@xxxxxxx>
> Cc: Alon Bar-Lev <alon.barlev@xxxxxxxxx>

Acked-by: H. Peter Anvin <hpa@xxxxxxxxx>
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