Re: [GIT PULL] MIPS fixes for v6.18

[Thomas Bogendoerfer]

On Mon, Nov 24, 2025 at 04:46:44PM +0100, Gregory CLEMENT wrote:
> Hello Thomas,
> 
> > The following changes since commit e9a6fb0bcdd7609be6969112f3fbfcce3b1d4a7c:
> >
> >   Linux 6.18-rc5 (2025-11-09 15:10:19 -0800)
> >
> > are available in the Git repository at:
> >
> >   git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git/ tags/mips-fixes_6.18_1
> >
> > for you to fetch changes up to 14b46ba92bf547508b4a49370c99aba76cb53b53:
> >
> >   MIPS: kernel: Fix random segmentation faults (2025-11-21 13:24:05 +0100)
> >
> > ----------------------------------------------------------------
> > - Fix CPU type in DT for econet
> > - Fix for Malta PCI MMIO breakage for SOC-it
> > - Fix TLB shutdown caused by iniital uniquification
> > - Fix random seg faults
> >
> > ----------------------------------------------------------------
> > Aleksander Jan Bajkowski (1):
> >       mips: dts: econet: fix EN751221 core type
> >
> > Maciej W. Rozycki (2):
> >       MIPS: Malta: Fix !EVA SOC-it PCI MMIO
> >       MIPS: mm: Prevent a TLB shutdown on initial uniquification
> 
> Today, the kernel v6.18-rc7 no longer boots on EyeQ5 and EyeQ6H (MIPS
> I6500)-based boards. After a git bisect between v6.18-rc6 and v6.18-rc7,
> we found that the culprit is the commit "MIPS: mm: Prevent a TLB
> shutdown on initial uniquification".
> 
> Here is the log from a vanilla v6.18-rc7:

[..]

I guess your cores have more than 64 TLB entries. The Octeon CPU has
256 entries... Patch below fixes the issue there.

Thomas.