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Sat, 10 Oct 2026 09:42:34 +0000 X-Mizu-Trace-ID: 57f0757703d8e229 X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3901.100.1.1.12\)) Subject: Re: [PATCH 0/4] mm: Fix page-table teardown during memory hot-remove From: Muchun Song In-Reply-To: Date: Sat, 10 Oct 2026 17:42:18 +0800 Cc: Muchun Song , akpm@linux-foundation.org, linux-mm@kvack.org, stable@vger.kernel.org, david@kernel.org, osalvador@suse.de, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, linux-arm-kernel@lists.infradead.org, pjw@kernel.org, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, linux-riscv@lists.infradead.org, agordeev@linux.ibm.com, kevin.brodsky@arm.com, bjorn@rivosinc.com, apopple@nvidia.com, linux-kernel@vger.kernel.org Content-Transfer-Encoding: 7bit Message-Id: References: <20261008073021.2512665-1-songmuchun@bytedance.com> To: Dave Hansen X-Mailer: Apple Mail (2.3901.100.1.1.12) X-Rspamd-Queue-Id: 5FF2DC0006 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: mef1k47p4wfk5i4jm3iuxqnanckcc9aa X-HE-Tag: 1791625359-951698 X-HE-Meta: U2FsdGVkX1+nmQJwO4E2FX7/wvT3Rvmd+PdK5UOgjk4Tks1Mc5Zmo7LsuwUiEKhA7QObfSU5NINOZ6kw7tDhXdh9WIU+zwRjVYTeu8W+swHMBgzlzbR+k+ZyCrRBX3RD0M++StOloki56SZKSJNZwQbv8A73oiW5pM996LzTRql3ifcG0WcudJ6MhtUocIegLjwKV8KmgiFke0EdG2MN3YZWhbDuoimGvdA4IIszOfem1UWJHuewNpHTcZr8LwgYlv0s52p50Oiwxby6Xmpoq7LtZbCP3eZkKbSGecnWpHFKmSkjR0o1HctojsTON8OZB2/AzbXPCxSZXw1mvuVbajSI/Ujy9CZeZcCede+MLrb2owzqKiVWoTNOymtmfjCi2y4pbOV3xD5kPN9zvE6ZibVrTskvq7PP9XWhiqCStUuMmhEehECTfk0+s/bjgwQkN4bZUVg5/iuRcuJwBRIVieZpW/nJlLsa1vDfjTFAsCNZwk1Nq/UdU4gpS2Wd0s3VaNpazoeDYd6lzDDGQAqwtCy53Zpwqr0OJ3ckRefMdUOMEWCkNA9lsjw+z3hF3V3dngExpRijFaJcQQd1qYC4sOX8Fqmau3iX8iXZG3HE/6Nh4rLs8JSsR/e29y5++Y7bT0K8jTzBF2DTWnaVOXUWfRw8MS1nhzuz+RBDE4b6/aTym1lfFUhISCA7LKhriHKI2cfT9mgulQ4SDXVHyiUb52WMLVC7AzShYpswwN0qERzsznUDV+ENF/XXvTffhxHeiixoP10E4PLJI0LauLzEnTR1cQTnAIzN0UGksBFx3BrNoQQ4VMfKwkGfE7f+FIZFRkQ0CS/ExGE3tn1zQf/0/r9mqaUdDW6MbURQJD7OXdee5oQEbyY0EoLbRHt6Db2jzwk7ht3MYPtq7ooXSL2rok1aRqxRI+nyxTuGvKuq1JFeIwaXZ7BcHX9thrGz4/p3we8vm4JWA/9+gAcQBP9 jK/sUVfL PLYZM1pvjeuzcFQDw0VAq9Zfn+OIU0gNIMKWa+O+fl7wAAs0rWM5oUGovmuKKvyvPcLKT1CnJpeYpw6HP9yqkajZgrv+4gjyelXB8mFdRhU4zfwx3LNa0AaxTJvU2EzZYfNqRamzfnojS1LtZH7pnLW/Juca1t6HcmFF1RwAtiwQ1KmtSuisVie+vPlmIRS6Lypx2O5Zp5xoSrWm5md7sNZfjuSAOHjhlfqQcqOrSY3C+YN9DLFJnK06qa+uIi7dhEEYj37/ldEeGjOxuHPfhWkzgSdLVk4/bYEGR Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > On Oct 10, 2026, at 04:48, Dave Hansen wrote: > > On 10/8/26 00:30, Muchun Song wrote: >> This series is limited to bug fixes for the existing teardown paths. > > Why is this a series? Why not send the architectures independently? Is > there some dependency where they all need to be applied at once? What do > you want done with this series? Are you expecting it to be merged via > the mm path or the individual arch maintainers? You're right that there is no strict dependency across all three architectures in v1. I grouped them because they address the same page-table constructor/destructor imbalance exposed during memory hot-remove, but that alone does not require them to be applied as one series. For v2, I will move the common destructor handling into pagetable_free() as suggested by David. The RISC-V and arm64 fixes will then depend on that common MM change, so I plan to keep them in one series and have it go through the MM tree, with review or acks from the relevant architecture maintainers. Thanks, Muchun