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Bug#1006149: linux-image-5.16.0-1-686: Fails to boot on T41 Thinkpads



Axel Beckert wrote:

> ... but I actually have no idea how to cross-compile a
> kernel package from amd64 to i386.

The 64 bits compiler supports native build of 32 bits binaries through
the -m32 flag so you have just to install kernel build dependencies ,
multilibs support and point to the kernel source tree :

make ARCH=i386 menuconfig and then load your kernel config from elsewhere
make ARCH=i386 -j(number_of_cores) bindeb-pkg

You will obtain kernel-image-<version_progressive-number>-i386.deb and
kernel-headers-<version_progressive-number>-i386.deb for the 32 bit
architecture.

When installing the headers in the native 32 bit machine, the external
modules will not be built by dkms because the headers' scripts
"fixdep" and "genksym" are not cross-compiled but they're built for a
x86_64 environment : those scripts  can be simply replaced by copying
their 32 bit version from a pre installed 32 bit headers' scripts
location ( eg: /usr/src/linux-headers-5.16.0-6-common/scripts/basic/fixdep
, /usr/src/linux-headers-5.16.0-6-common/scripts/genksym/genksym )

modpost gives problems to be replaced : I found a solution by
installing qemu-x86_64 in the 32 bit environment , putting the 64 bits
libc-2.3x.so and ld.so somewhere and finally changing in
scripts/Makefile.modpost the line

MODPOST = scripts/mod/modpost

with

MODPOST = qemu-x86_64 -L <location_of_libc-.so and_ld.so> scripts/mod/modpost

You can now build your modules with :

dkms autoinstall -k <kernel-version>

It's an artifact that I use because I don't really want to set up a
native 32 bit build host.

Sooooo ....is the solution to this bug to not permit reading the
driver's log when attached to an ICH4 controller ? If that's the case
you will have to blacklist all the machines with that controller
installed, not only "Thinkpad" branded machines. I suspect that the
controller is the base for a bunch of different branded machines of a
certain period ( mine is an ACER )

P.s. for readers .... for the next time , please sanitize the serial
number of the drives :)


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