[LTP] [PATCH 1/2] tst_kernel: Fix search for foo-x86-64 module

[Li Wang]

On Wed, Mar 16, 2022 at 10:11 PM Petr Vorel <pvorel@suse.cz> wrote:

> > Hi Petr
> > I don't understand why we must serach foo-x86-64 module, so what problem
> > do you meet?
>
> > I used 5.17-rc8,  it still use foo-x86_64 named rule for
> > kernel/arch/x86/crypto/libblake2s-x86_64.ko.
>
> > If kernel has libblake2s-x86_64 module, then tst_check_driver will use
> > libblake2s_x86_64 to find, it should succeed.
>
> > If kernel doesn't have libblake2s-x86_64 module, then tst_ckeck_driver
> > will search twice ,the first time use libblake2s-x86_64  and the second
> > time use libblake2s_x86_64, then search failed.
>
> tst_check_driver.sh is failing on intel based systems. Well, we could make
> sure
> it does not try to test libblake2s-x86-64, IMHO it'd be better to make sure
> tst_search_driver() works with it, because modinfo/modprobe works with it:
>
> $ modinfo libblake2s-x86-64
> name:           libblake2s_x86_64
> filename:       (builtin)
> license:        GPL v2
> file:           arch/x86/crypto/libblake2s-x86_64
>
> Sure, it's a corner case, but I'd still fix it.
> Let's see what other think.
>

Which kernel (and kmod) version did you use?

I tried locally on my rhel8 and fedora 34 but that doesn't work for me.

$ rpm -q kmod
kmod-28-2.fc34.x86_64

$ lsmod  |grep  libblake2s
libblake2s             16384  0
blake2s_x86_64         20480  1 libblake2s
libblake2s_generic     20480  1 blake2s_x86_64

$ modinfo libblake2s-x86-64
modinfo: ERROR: Module libblake2s-x86-64 not found.


Then I checked the Linux source code and get:
------------------

$ cat linux/arch/x86/crypto/Makefile |grep libblake2s
obj-$(if $(CONFIG_CRYPTO_BLAKE2S_X86),y) += libblake2s-x86_64.o
libblake2s-x86_64-y := blake2s-core.o blake2s-glue.o


-- 
Regards,
Li Wang
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