Messages in this thread | | | Date | Wed, 2 Jun 2010 16:20:39 +0800 | From | Américo Wang <> | Subject | Re: config automatically switches from 32-bit to 64-bit for x86 |
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On Sat, May 29, 2010 at 10:49:25PM +0530, Jaswinder Singh Rajput wrote: >Hello Sam and Américo, > >On Sat, May 29, 2010 at 4:49 PM, Sam Ravnborg <sam@ravnborg.org> wrote: >> On Fri, May 28, 2010 at 03:37:00AM +0530, Jaswinder Singh Rajput wrote: >>> Hello Sam, >>> >>> On Fri, May 28, 2010 at 12:16 AM, Sam Ravnborg <sam@ravnborg.org> wrote: >>> > On Thu, May 27, 2010 at 11:49:16AM -0400, Christoph Hellwig wrote: >>> >> On Thu, May 27, 2010 at 05:37:36AM +0530, Jaswinder Singh Rajput wrote: >>> >> > Hello, >>> >> > >>> >> > I am trying to build 32 bit kernel image on 64-bit machine but after >>> >> > 'make menuconfig' it automatically switches 32-bit to 64-bit. >>> >> > >>> >> > Is this a BUG or did intentionally. >>> >> >>> >> I think it's intentional, but I'm really annoyed by this behaviour. >>> > >>> > The request when we did the merge of 32 and 64 bit was that we >>> > should continue to build 64bit kernels on 64 bit machines. >>> > And likewise for 32bit. >>> > Because this was what the users where used to. >>> > >>> > We could simplify metters by defining new rules. >>> > As you suggest that uname on an intel box always resulted in ARCH=x86. >>> > But then people would complain why a 32 bit kernel is default when >>> > the box is 64 bit. >>> > >>> > Something like this: >>> > [The escape chars align nicely in the patched Makefile] >>> > >>> > Sam >>> > >>> > diff --git a/Makefile b/Makefile >>> > index ebc8225..e7f97a5 100644 >>> > --- a/Makefile >>> > +++ b/Makefile >>> > @@ -161,10 +161,11 @@ export srctree objtree VPATH >>> > # then ARCH is assigned, getting whatever value it gets normally, and >>> > # SUBARCH is subsequently ignored. >>> > >>> > -SUBARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ \ >>> > - -e s/arm.*/arm/ -e s/sa110/arm/ \ >>> > +SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ >>> > + -e s/sun4u/sparc64/ \ >>> > + -e s/arm.*/arm/ -e s/sa110/arm/ \ >>> > -e s/s390x/s390/ -e s/parisc64/parisc/ \ >>> > - -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ >>> > + -e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ >>> > -e s/sh[234].*/sh/ ) >>> > >>> > # Cross compiling and selecting different set of gcc/bin-utils >>> > >>> > >>> >>> Thanks, this patch fixes the issue. Now 'make menuconfig' is following .config. >> >> If you think this is the right way to do things you can take it up >> with the x86 maintainers. >> >> Although the patch touches only a generic file this is x86 specific. >> > >Américo Wang, Do you mind handle this kconfig patch. >
Sorry for the delay.
Usually Michal should take this patch. Cc'ing him.
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