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[2a02:3100:adbf:6901:6c54:85ea:c6d5:a48d]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48868889376sm9713823f8f.33.2026.09.23.23.23.25 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 23 Sep 2026 23:23:25 -0700 (PDT) From: Karl Mehltretter To: linux-arm-kernel@lists.infradead.org Cc: Karl Mehltretter , Russell King , Oscar Salvador , Andrew Morton , Muchun Song , David Hildenbrand , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ARM: mm: align hugetlb mappings to the huge page size Date: Thu, 24 Sep 2026 08:23:23 +0200 Message-Id: <20260924062323.55651-1-kmehltretter@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: <20260901085740.66283-1-kmehltretter@gmail.com> References: <20260901085740.66283-1-kmehltretter@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: 4xrroxuuhxqxmumog7ujon4jacs5xeii X-Rspamd-Queue-Id: 03D4C100003 X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1790231007-926522 X-HE-Meta: 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 89bCtJDk e0GhoCNPVpko+xMfnuDUVTZ/NgO+8mNsAogG0rSEoHQ0x8B9UrTpyDu2oAMsHiD6dY3dD5e2WmVV4LGaeCk8V5tlSW07eXAIK4ZqK+/K13MAKoGyEDstbuxo031zrHThrCUGM39AvbMaL32+2BtQgX8nTJELKKkFU2POPaimRaDxGQba4b+dq48Nyzc+ivR2hMaFUpI9YRKfP/4klfTeyMtSpp08rqrXBp1iN4tOBTKmdAp0BX+auWtSm5EmkPij+/sGhpNjYnNw/B9VruCvoSokkKjK7ZzklKehVKc0k0xu2g4xT/0icW0s6DYSytvpajTFmV4ynYgckvav5+g5ycqWRiW9IifRLgtAYNmchFKBHG/1+QL50Ok17tL5JxMuCS+VZkqh8z4+OfXD6iKkCpQguqvHaWmNlPGNGRjMYmmToSWNj7hb2/Ihw/bmCWicnmgnMVVceb9moGXRK0Sv/MYNN0bPKF4oXB9lo Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, A friendly ping on this patch. I came across the ARM32 alignment issue again while testing Ackerley's HugeTLB subpool series [1] on v7.3-rc3 in QEMU (Cortex-A15, LPAE). I've now retested with this alignment fix applied on top of the full series, keeping the kernel configuration and test image unchanged. All six ordinary HugeTLB mapping and cleanup tests pass with both one and four virtual CPUs, without the previously observed panic. Would someone have a chance to take a look? Happy to provide the configuration and logs if useful. [1] https://lore.kernel.org/r/20260916-hugetlb-subpool-always-track-used-v3-0-38aae9b5ccdd@google.com/ Thanks, Karl