boot command line length 256 ? 1024 ?

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Im looking to try kgdb, but in my situation, the boot command line
is being truncated at 256 chars, so it wont take
the additional params (kgdbwait ..)

I gather from syslinux list that the boot command line length
has long been limited to 256 chars, but that in release 3.08 (which Im using) it was raised to 1023. So its apparently the kernel thats truncating the boot-line.


However, Ive googled for combos of ' boot line length 256 1024 command '
and gotten nowhere, and also tried lkml.org search.

Also, theres nothing in Documentation/kernel-parameters.txt,
it seems appropriate place for a 1-liner

Anyone know current status, or available patch,
and if already extended, when it happened ?
im using 2.6.12-rc5-mm2..

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