On Thu, 29 May 2025 10:41:22 +0530 Srikar Dronamraju <sri...@linux.ibm.com> wrote:
> * Erhard Furtner <erhar...@mailbox.org> [2025-05-27 20:47:28]: > > > On Tue, 27 May 2025 14:19:13 +0530 > > Srikar Dronamraju <sri...@linux.ibm.com> wrote: > > > > > > Getting these from time to time when I run the machine for longer > > > > periods building: > > > > > > > > [...] > > > > ------------[ cut here ]------------ > > > > WARNING: CPU: 12 PID: 44394 at arch/powerpc/kernel/process.c:437 > > > > giveup_all+0x90/0x1d0 > > > > > > Its a warning with says that the task's userspace MSR register has > > > VSX set but not the VEC or FP. > > > > > > Were you building the kernel or were you building something else. > > > Can you paste the command you attempted? > > > > I was doing an 'emerge -e @world' in Gentoo Linux and probably building a > > kernel in another shell. Noticed it only in the logs on the next day so I > > can't tell exactly which command triggered the issue. > > > > But I will pay closer attention from now on. > > > > > If this is happening with only the recent kernel and working with a > > > previous > > > kernel, do you happen to know the previous kernel version. > > > In which case, is there a possibility of doing a git bisect? > > > > I think I have not seen this in v6.13, certainly not in v6.12. > > > > I did go through the git log from v6.12 till v6.15-rc7 and I dont see any > direct changes that could affect VSX VEC or FP changes in kernel. > > On a side note, Was there any significant userspace updates like library, > compiler updates from when you saw it working to now? Looks like these warnings easily happen when I build stuff with GCC 15, currently on my Gentoo Linux musl ppc partition. No kernel builds, just emerging regular Gentoo ebuilds. I'll sort out whether I see this on GCC 14 too and/or glibc partitions too. I'll report back when I know a bit more and maybe found a good starting point for a bisect. Regards, Erhard
