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Thu, 04 Dec 2025 15:23:37 -0800 (PST) Message-ID: <317deba2-e560-44ed-a9f7-3c6fdc446b6d@linuxfoundation.org> Date: Thu, 4 Dec 2025 16:23:36 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] Revert "mm: fix MAX_FOLIO_ORDER on powerpc configs with hugetlb" To: "David Hildenbrand (Red Hat)" , akpm@linux-foundation.org Cc: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, masahiroy@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Shuah Khan References: <20251204023358.54107-1-skhan@linuxfoundation.org> <51d8549e-b084-498e-84c0-76fd3de116cb@kernel.org> Content-Language: en-US From: Shuah Khan In-Reply-To: <51d8549e-b084-498e-84c0-76fd3de116cb@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4003B180003 X-Rspamd-Server: rspam06 X-Rspam-User: X-Stat-Signature: p1gkbhje6xe7rizjcrrgut7tnj7deqtn X-HE-Tag: 1764890619-124054 X-HE-Meta: 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 f8jRfgP1 OOEJQgCv73/91Aqj1ZWZC2k1HUo8s3yXAiPy22e62I1gw1Mvcu610iTAu4QqsZNVO/tN6GO5GqMBOsOPqkdcDuNMhVHiDb51eJiNF X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 12/4/25 15:16, David Hildenbrand (Red Hat) wrote: > On 12/4/25 03:33, Shuah Khan wrote: >> This reverts commit 39231e8d6ba7f794b566fd91ebd88c0834a23b98. >> >> Enabling HAVE_GIGANTIC_FOLIOS broke kernel build and git clone on two >> systems. git fetch-pack fails when cloning large repos and make hangs >> or errors out of Makefile.build with Error: 139. > > Looking at the last part, "Error 139" was confirmed to be fixed in 6.18, right? At least reading [1] there I find > > "it was issue of 6.18.0-rc6 kernel itself. After switching to default Arch Linux kernel build went without problem and I'm now on 6.18 stable kernel." > > Did you mange to report the make issue you reported here [2] on 6.18 as well, or only pre 6.18-rc7? The problems I saw were on rc6. See below. Repeating what I said on the thread so we are all in the loop and on the same page. It took me a bit of time to retest on two systems. Both my systems were running rc6 - I was stuck in a state where I was able to rebase to rc7 and then 6.18, but could never build either one. When I suspected rc6 to be the problem, I booted rc5 and compiled 6.18 after reverting 39231e8d6ba based on config file changes between rc5 and rc6. I retested on both systems on 6.18 making sure I have 5bebe8de19264 and 39231e8d6ba in there. I cloned linux_next and built it on both. I didn't see any problems on 6.18. Having said that, It might make sense to hold off on including 39231e8d6ba in 6.18 so there is more time to test beyond 2 rc cycles. That is for you all to decide. thanks, -- Shuah