Hi,
Maciej W. Rozycki wrote,

> Hi,
> 
>  This is a reimplementation of initial TLB entry uniquification so as to 
> address an issue with processors that implement a hidden TLB entry bit 
> triggered by commit 9f048fa48740 ("MIPS: mm: Prevent a TLB shutdown on 
> initial uniquification") for platforms that hand the TLB over unchanged 
> from reset.
> 
>  This has been verified across the following systems:
> 
> - DECstation 5000/150, R4000SC MIPS III CPU, SEGBITS == 40, 48-entry TLB, 
>   32-bit kernel,
> 
> - Broadcom BCM91250A, BCM1250 MIPS64 CPU, SEGBITS == 44, 64-entry TLB, 
>   64-bit kernel,
> 
> - MIPS Malta, 74Kf MIPS32r2 CPU, SEGBITS == 31, 64-entry TLB, 32-bit 
>   kernel.
> 
> A debug change was used to verify the TLB is initialised as expected.
> 
>  See individual commit descriptions for details.
> 
>  I consider this code ready to use, but given the diversity of TLB designs 
> with MIPS architecture processors I will appreciate verification across 
> various actual hardware, particularly in preparation for backporting, as 
> this addresses a serious regression for a subset of systems.
> 
>  Please apply otherwise.  Thank you for patience waiting for this fix.
> 
>   Maciej
> 

I tested following three devices with success:
Mikrotik RB532
Linksys WRT54GS v1.0
Microchip PIC32MZ Graphics (DA) Starter Kit

I have attached the dmesg output.

For Microchip I had to revert commit ec7c2a107a59a60079eff3308e791a3441231f2e.
It seems there is a Kconfig naming conflict.
I use:
CONFIG_BUILTIN_DTB_NAME="pic32mzda_sk"
CONFIG_BUILTIN_DTB=y
CONFIG_MIPS_NO_APPENDED_DTB=y

Furthermore I had to recognize that ethernet is not working in
Linux, just in u-boot. But that is unrelated to the patches.

You can add my 
Tested-by: Waldemar Brodkorb <wbx@openadk.org>
to the patch series.

best regards and thanks very much,
 Waldemar