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Subjectshould there still be arch-specific 4KSTACKS support?

via some convoluted logic, i ended up doing the following search:

$ grep -r 4KSTACKS *
arch/sh/configs/r7785rp_defconfig:CONFIG_4KSTACKS=y
arch/sh/Kconfig.debug:config 4KSTACKS
arch/sh/include/asm/thread_info.h:#if defined(CONFIG_4KSTACKS)
arch/mn10300/include/asm/thread_info.h:#ifdef CONFIG_4KSTACKS
arch/m68k/Kconfig.machine:config 4KSTACKS
arch/m68k/configs/m5208evb_defconfig:# CONFIG_4KSTACKS is not set
arch/m68k/configs/m5275evb_defconfig:# CONFIG_4KSTACKS is not set
arch/m68k/configs/m5475evb_defconfig:# CONFIG_4KSTACKS is not set
arch/m68k/include/asm/thread_info.h:#ifdef CONFIG_4KSTACKS
arch/c6x/include/asm/thread_info.h:#ifdef CONFIG_4KSTACKS
drivers/lguest/interrupts_and_traps.c: * Depending on the CONFIG_4KSTACKS option, the Guest can have one or
kernel/lockdep.c: * hardirq contexts (such as on 4KSTACKS), so only
$

so even though 4KSTACKS support was officially removed in June of
2010:

$ git show dcfa7262

there's still traces of it, some of it obviously harmless, leftover
cruft, but it would appear that both sh and m68k still provide a
4KSTACKS config option.

how much of that can be tossed as useless?

rday

--

========================================================================
Robert P. J. Day Ottawa, Ontario, CANADA
http://crashcourse.ca

Twitter: http://twitter.com/rpjday
LinkedIn: http://ca.linkedin.com/in/rpjday
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