On 04/16/2011 09:21 PM, Florian Fainelli wrote: > Hello, > > Le 16/04/2011 17:21, Philby John a Ãcrit : >> On 04/15/2011 09:57 PM, David Daney wrote: >>> On 04/15/2011 01:55 AM, Philby John wrote: >>>> On 04/15/2011 01:54 PM, Florian Fainelli wrote: >>>>> Hello, >>>>> >>>>> On Wednesday 13 April 2011 19:38:02 David Daney wrote: >>>>>> On 04/13/2011 09:07 AM, philby john wrote: >>>>>>> From: Philby John<pjohn@xxxxxxxxxx> >>>>>> >>>>>> ^^^^^^^^ I believe that statement to be not entirely correct. >>>>>> >>>>>> Perhaps you should change it to something like: >>>>>> From: David Daney<ddaney@xxxxxxxxxxxxxxxxxx> >>>>>> >>>>>>> Date: Wed, 13 Apr 2011 20:46:32 +0530 >>>>>>> Subject: [PATCH] MIPS: Octeon: add option to ignore PT_NOTE section >>>>>>> >>>>>>> Some early Octeon bootloaders cannot process PT_NOTE program >>>>>>> headers as reported in numerous sections of the web, here is >>>>>>> an example http://www.spinics.net/lists/mips/msg37799.html >>>>>>> Loading usually fails with such an error ... >>>>>>> Error allocating memory for elf image! >>>>>>> >>>>>>> The work around usually is to strip the .notes section by using >>>>>>> such a command $mips-gnu-strip -R .notes vmlinux -o fixed-vmlinux >>>>>>> It is expected that the vmlinux image got after compilation be >>>>>>> bootable. Add a Kconfig option to ignore the PT_NOTE section. >>>>> >>>>> Do we really want this to be in the kernel? In my opinion, this is a >>>>> fixup >>>>> which distributions should be aware of, but not necessarily take >>>>> place here in >>>>> the kernel Makefiles. >>>> >>>> You are right in one way. But as an OS vendor company we will >>>> definitely >>>> include this patch in our distribution. This incident has been reported >>>> many a times and its a pain to see the image not boot up, throw up an >>>> error, with the user having to search the work around on the web. What >>>> we are trying to do is save all that trouble. If it can be fixed why >>>> not >>>> fix it. >>>> >>> >>> I don't care one way or another. We too (perhaps one and the same...) >>> provide kernels to our SDK customers with the patch applied. >>> >>> An alternative approach would be to put the $(CROSS_COMPILE)strip >>> command into the arch/mips/Makefile. >> >> I doubt that's any good, strip also removes debug symbols along with the >> notes section and I am not aware of a specific command to strip just the >> PT_NOTE section. Just these lines of code seem to get the job done >> though ... >> >> +#ifndef CONFIG_DISABLE_ELF_NOTE_HEADER >> NOTES :text :note >> +#else >> + NOTES :text >> +#endif > > strip can be told to only strip a particular section, e.g: > $(TARGET_CROSS)strip -R .notes > But this strips the debug symbols as well, from what I saw. Problems with the strip command? Anyways, I won't be pursuing this matter any further given the limited scope of its inclusion. Regards, Philby
