* CONFIG_XIP_ROM vs. CONFIG_XIP_KERNEL
@ 2004-04-29 19:07 Tim Bird
2004-04-29 20:09 ` Ralf Baechle
2004-04-29 20:49 ` Nicolas Pitre
0 siblings, 2 replies; 3+ messages in thread
From: Tim Bird @ 2004-04-29 19:07 UTC (permalink / raw)
To: linux kernel
Cc: linux-arm-kernel, linux-mips, linux-sh-ctl,
CE Linux Developers List
I'm looking at some sources for kernel Execute-in-place (XIP).
I see references to CONFIG_XIP_ROM and CONFIG_XIP_KERNEL,
in different architecture branches of the same kernel
source tree.
Is this difference merely the result of inconsistent
usage, or is there a functional difference between
these two options?
I can imagine that CONFIG_XIP_ROM is intended only to
handle XIP in ROM, and that CONFIG_XIP_KERNEL possibly
handles additional cases like XIP in flash. However,
before jumping to that conclusion I thought I would
ask if there is some intention behind the different
config names.
Thanks,
=============================
Tim Bird
Architecture Group Co-Chair
CE Linux Forum
Senior Staff Engineer
Sony Electronics
E-mail: Tim.Bird (at) am.sony.com
=============================
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: CONFIG_XIP_ROM vs. CONFIG_XIP_KERNEL
2004-04-29 19:07 CONFIG_XIP_ROM vs. CONFIG_XIP_KERNEL Tim Bird
@ 2004-04-29 20:09 ` Ralf Baechle
2004-04-29 20:49 ` Nicolas Pitre
1 sibling, 0 replies; 3+ messages in thread
From: Ralf Baechle @ 2004-04-29 20:09 UTC (permalink / raw)
To: Tim Bird
Cc: linux kernel, linux-arm-kernel, linux-mips, linux-sh-ctl,
CE Linux Developers List
On Thu, Apr 29, 2004 at 12:07:17PM -0700, Tim Bird wrote:
> I'm looking at some sources for kernel Execute-in-place (XIP).
>
> I see references to CONFIG_XIP_ROM and CONFIG_XIP_KERNEL,
> in different architecture branches of the same kernel
> source tree.
>
> Is this difference merely the result of inconsistent
> usage, or is there a functional difference between
> these two options?
>
> I can imagine that CONFIG_XIP_ROM is intended only to
> handle XIP in ROM, and that CONFIG_XIP_KERNEL possibly
> handles additional cases like XIP in flash. However,
> before jumping to that conclusion I thought I would
> ask if there is some intention behind the different
> config names.
Since you copied linux-mips - neither option is implemented for MIPS ...
Ralf
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: CONFIG_XIP_ROM vs. CONFIG_XIP_KERNEL
2004-04-29 19:07 CONFIG_XIP_ROM vs. CONFIG_XIP_KERNEL Tim Bird
2004-04-29 20:09 ` Ralf Baechle
@ 2004-04-29 20:49 ` Nicolas Pitre
1 sibling, 0 replies; 3+ messages in thread
From: Nicolas Pitre @ 2004-04-29 20:49 UTC (permalink / raw)
To: Tim Bird
Cc: linux kernel, linux-arm-kernel, linux-mips, linux-sh-ctl,
CE Linux Developers List
On Thu, 29 Apr 2004, Tim Bird wrote:
> I'm looking at some sources for kernel Execute-in-place (XIP).
>
> I see references to CONFIG_XIP_ROM and CONFIG_XIP_KERNEL,
> in different architecture branches of the same kernel
> source tree.
>
> Is this difference merely the result of inconsistent
> usage, or is there a functional difference between
> these two options?
It's the result of me deciding CONFIG_XIP_ROM wasn't totally appropriate ...
> I can imagine that CONFIG_XIP_ROM is intended only to
> handle XIP in ROM, and that CONFIG_XIP_KERNEL possibly
> handles additional cases like XIP in flash. However,
> before jumping to that conclusion I thought I would
> ask if there is some intention behind the different
> config names.
... so I renamed it to CONFIG_XIP_KERNEL. Especially since there is also
XIPable user space which also can be stored in ROM (or flash). So please
disregard CONFIG_XIP_ROM and use CONFIG_XIP_KERNEL. Whether ROM or Flash is
used is rather irrelevant to the code this option is linked to.
Nicolas
^ permalink raw reply [flat|nested] 3+ messages in thread
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2004-04-29 19:07 CONFIG_XIP_ROM vs. CONFIG_XIP_KERNEL Tim Bird
2004-04-29 20:09 ` Ralf Baechle
2004-04-29 20:49 ` Nicolas Pitre
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