Re: [PATCH 0/2] sh: mm: fix hugetlb on SH-4

[John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Hi Karl,

On Sun, 2026-09-27 at 20:35 +0200, Karl Mehltretter wrote:
> On Sat, Sep 26, 2026 at 08:43:45PM +0100, John Paul Adrian Glaubitz wrote:
> > Thanks for the patch! This should definitely be tested on real hardware
> > and I think it's a good reason to test this on my SH7785LCR which wouldn't
> > boot on anything newer than 6.5.0.
> > 
> 
> Testing with real hardware is very cool! Maybe I will get some SH
> hardware myself one day. For now you've motivated me to do a QEMU SuperH
> fork with more features, with a lot of help from my LLM agent:
> 
> https://github.com/kmehltretter82/qemu-superh

Thanks, appreciate the patches. I'll try to look at these patches tomorrow.

Since I am reviewing them in detail, it can take me a few hours to properly
review them. Usually, I'm also asking Geert to have a look at them as well
since he is a far more experienced kernel developer than I am.

> I will send some bug fix patches based on it soon, hopefully also fixing
> your 6.5 problem. I believe it is an old heap overflow in the SH intc
> code that only started to crash when sh7785lcr_defconfig switched from
> SLAB to SLUB in 6.5.

Great, I'll give that patch a try tomorrow when I'm back home. Would be
great to unbreak my favorite SH board.

Btw, feel free to join us in #linux-sh on Libera IRC and/or on Discord:

https://discord.gg/WhtqXkYys

Adrian

-- 
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