On Sun, Nov 11, 2007 at 06:09:45AM +0100, Adrian Bunk wrote:
> On Sat, Nov 10, 2007 at 09:40:38PM +0100, Sam Ravnborg wrote:
>
> > As discussed in another thread the right thing is to add a generic solution
> > to select between 32 and 64 bit - useable for powerpc, s390, ppc et al.
> >...
>
> I seriously question this would be "the right thing".
>
> 32/64bit isn't that special that this and only this option would require
> special casing, and the KISS principle of having only one way to specify
> something like this has it's advantages.
"The right thing" in the correct context.
It was discussed to keep ARCH={i386,x86_64} and the point I have
is that if we are going to extend ARCH=... to be useable to
specify kernel bit size then it should be done in a generic way
and not like it was done before on x86.
I do not consider the discussion about keeping/dropping
ARCH={i386,x86_64} as concluded.
And if we decide on keeping ARCH={i386,x86_64} then I have
questioned the semantics. Clear opinions are missing..
ARCH= semantic
Impact before now
================================================
32/64 bit yes yes
bzImage location yes no
different Kconfig files yes no
decide defconfig yes yes
asm symlink no no
build option yes no [1]
[did I miss anything? I think I did]
[1] ARCH=... select 32/64-bit during configuration.
There is no difference between ARCH={x86,i386,x86_64}
when building the kernel because the 32/64 bit
choice is done at configuration time.
The table above reflect the [now] semantics with the
patches that is present at lkml.
And the patch needed to implment the above
semantic (after the preparational stuff which
is generic) are:
$ git diff --stat HEAD~1..HEAD
Makefile | 18 ++++++++++++++----
arch/x86/Makefile | 8 ++++++--
scripts/kconfig/Makefile | 2 +-
3 files changed, 21 insertions(+), 7 deletions(-)
The scripts/kconfig/Makefile change is a bugfix that maybe
should be included in another patch. It is not x86 specific.
So 19 additional lines and 5 deleted lines to introduce the
ARCH= semantics above.
Sam
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
