Thanks for the quick reply, Thomas!

On Thu, 2026-01-22 at 10:50 +0100, Thomas Weißschuh wrote:

quoted

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For consistency with __vdso_clock_gettime64() there should also be a
64-bit variant of clock_getres(). This will allow the extension of
CONFIG_COMPAT_32BIT_TIME to the vDSO and finally the removal of 32-bit
time types from the kernel and UAPI.

Signed-off-by: Thomas Weißschuh <redacted>

I've bisected this patch to cause the following build failure on my side:

   LDS     arch/powerpc/kernel/vdso/vdso32.lds
   VDSO32A arch/powerpc/kernel/vdso/sigtramp32-32.o
   VDSO32A arch/powerpc/kernel/vdso/gettimeofday-32.o
   VDSO32A arch/powerpc/kernel/vdso/datapage-32.o
   VDSO32A arch/powerpc/kernel/vdso/cacheflush-32.o
   VDSO32A arch/powerpc/kernel/vdso/note-32.o
   VDSO32A arch/powerpc/kernel/vdso/getcpu-32.o
   VDSO32A arch/powerpc/kernel/vdso/getrandom-32.o
   VDSO32A arch/powerpc/kernel/vdso/vgetrandom-chacha-32.o
   VDSO32C arch/powerpc/kernel/vdso/vgettimeofday-32.o
   VDSO32C arch/powerpc/kernel/vdso/vgetrandom-32.o
   VDSO32A arch/powerpc/kernel/vdso/crtsavres-32.o
   VDSO32L arch/powerpc/kernel/vdso/vdso32.so.dbg
arch/powerpc/kernel/vdso/vdso32.so.dbg: dynamic relocations are not supported
make[2]: *** [arch/powerpc/kernel/vdso/Makefile:79: arch/powerpc/kernel/vdso/vdso32.so.dbg] Error 1
make[1]: *** [arch/powerpc/Makefile:388: vdso_prepare] Error 2

Thanks for the report!

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Does it ring any bells? What could I try/test?

Not immediately, but I'll look into it.

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I'm using gcc-15.2.0 and binutils 2.45.1.

Is this a toolchain from https://cdn.kernel.org/pub/tools/crosstool/ ?

It's actually yocto master toolchain as of 6145837147dc2a6d54a221f9cd7fe90d6895ff90 (openembedded-core).

Could you also share your configuration?

Do you mean kernel config? I'll send it privately in a minute not to overload the lists...

-- 
Alexander Sverdlin
Siemens AG
www.siemens.com