# \[PATCH 6.6.y 0/1\] Fix ppc64 build error introduced in v6.6.161

- From: Stephen Brennan \<hidden\>
- Date: 2026-11-05 23:24:30 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2026/11/17874607
- Thread: https://ratatoskr.run/stable/2026/11/17874607/t.md

```text
Hello,

Drgn builds stable kernels regularly in order to run its test suite against. We
encountered an error compiling v6.6.161 for ppc64.

The 6.6.161 update contained "powerpc/iommu: Move pSeries specific functions to
pseries/iommu.c" [1]. On ppc64 configurations without CONFIG_IOMMU_API, this
breaks the build (details in the patch).

Thank you!
Stephen

https://lore.kernel.org/all/20261017160448.281572781@linuxfoundation.org/

Stephen Brennan (1):
  powerpc/pseries/iommu: Restore CONFIG_IOMMU_API dependency

 arch/powerpc/platforms/pseries/iommu.c | 6 ++++++
 1 file changed, 6 insertions(+)

-- 
2.52.0


```