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[2a02:3100:b2e6:5301:2072:420:f831:ed4e]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-489bd7b1df0sm1001928f8f.31.2026.09.27.11.35.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 27 Sep 2026 11:35:18 -0700 (PDT) Date: Sun, 27 Sep 2026 20:35:16 +0200 From: Karl Mehltretter To: John Paul Adrian Glaubitz Cc: Yoshinori Sato , Rich Felker , linux-sh@vger.kernel.org, Muchun Song , Oscar Salvador , David Hildenbrand , Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/2] sh: mm: fix hugetlb on SH-4 Message-ID: References: <20260926183904.76186-1-kmehltretter@gmail.com> <9b75aa51e19f9c0f5c97ac02cfc0948ab5bbf279.camel@physik.fu-berlin.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <9b75aa51e19f9c0f5c97ac02cfc0948ab5bbf279.camel@physik.fu-berlin.de> 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. > Hi Adrian, 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 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. Karl