# Re: Build regressions/improvements in v5.14-rc6

- From: Geert Uytterhoeven \<geert@linux-m68k.org\>
- Date: 2021-08-23 11:16:22 
- List: linux-um
- Page: https://ratatoskr.run/linux-um/2021/08/1485697
- Thread: https://ratatoskr.run/linux-um/2021/08/1485697/t.md

```text
On Mon, Aug 23, 2021 at 12:52 PM Geert Uytterhoeven
[ref] wrote:
> JFYI, when comparing v5.14-rc6[1] to v5.14-rc5[3], the summaries are:
>   - build errors: +2/-0

  + /kisskb/src/drivers/dma/idxd/init.c: error: implicit declaration
of function 'cpu_feature_enabled'
[-Werror=implicit-function-declaration]:  => 815:7
  + /kisskb/src/drivers/dma/idxd/perfmon.h: error: 'struct perf_event'
has no member named 'pmu':  => 35:13, 24:13

um-x86_64/um-allmodconfig

> [1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/7c60610d476766e128cc4284bb6349732cbd6606/ (182 out of 189 configs)
> [3] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/36a21d51725af2ce0700c6ebcb6b9594aac658a6/ (182 out of 189 configs)

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

```