linux-kernel - Re: [PATCH v2] MIPS: mm: Prevent a TLB shutdown on initial uniquification

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Message-ID: <tsok52tdbt3z5j3i6ht22iko3mdqeom2ojcvvb52pwfbjnzzyy@mcwnzfpvksee>
Date: Wed, 12 Nov 2025 22:53:26 -0500
From: Nick Bowler <nbowler@...conx.ca>
To: "Maciej W. Rozycki" <macro@...am.me.uk>
Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>, 
	Jiaxun Yang <jiaxun.yang@...goat.com>, linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] MIPS: mm: Prevent a TLB shutdown on initial
 uniquification

On Wed, Nov 12, 2025 at 11:42:11PM +0000, Maciej W. Rozycki wrote:
> This fixes (at least) R4x00 cores if TLBP hits multiple matching TLB 
> entries (SGI IP22 PROM for examples sets up all TLBs to the same virtual 
> address).
> 
> Signed-off-by: Maciej W. Rozycki <macro@...am.me.uk>
> Fixes: 35ad7e181541 ("MIPS: mm: tlb-r4k: Uniquify TLB entries on init")

I tried this one too and it also appears to work fine on my R4400SC
Indy.  The system is booting normally again.

Thanks,
  Nick