[syslinux] Maximum line length of APPEND option in PXELINUX

Gebhardt Thomas gebhardt at hrz.uni-marburg.de
Fri Feb 25 01:29:03 PST 2005


On Thursday 24 February 2005 22:24, you wrote:

Hi,

> perhaps its worth pointing out that 255 is a kernel limit - unless
> Documentation/i386/boot.txt
> is oo-date:

for whatever reason the max. kernel command line size is
different on different archs:

./asm-mips/setup.h:#define COMMAND_LINE_SIZE    256
./asm-ppc64/setup.h:#define COMMAND_LINE_SIZE 512
./asm-parisc/setup.h:#define COMMAND_LINE_SIZE  1024
....

and there are patches that extend this value:

-#define COMMAND_LINE_SIZE 256
+#define COMMAND_LINE_SIZE 512 /* The boot commandline in Knoppix can
  get quite long -KK Oct. 2002 */

Cheers, Th. Gebhardt




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