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Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-mm@kvack.org, linux-cxl@vger.kernel.org Subject: Re: [PATCH v6 1/5] mm/zone_device: Reinitialize large zone device private folios Message-Id: <20260122134114.a04ddf4c34a4b926d057032f@linux-foundation.org> In-Reply-To: <626c34fc-34df-4629-baf3-fbebc9abafbb@nvidia.com> References: <4k72r4n5poss2glrof5fsapczkpcrnpokposeikw5wjvtodbto@wpqsxoxzpvy6> <20260119142019.GG1134360@nvidia.com> <96926697-070C-45DE-AD26-559652625859@nvidia.com> <20260119203551.GQ1134360@nvidia.com> <20260120135340.GA1134360@nvidia.com> <9077ab5b-f2c8-4c8d-8441-631e7c2cf384@suse.cz> <626c34fc-34df-4629-baf3-fbebc9abafbb@nvidia.com> X-Mailer: Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 7105914000A X-Stat-Signature: tryxnq8yrgq4znerfczk6co8tsheozfn X-Rspam-User: X-Rspamd-Server: rspam02 X-HE-Tag: 1769118077-696009 X-HE-Meta: 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 uNzxbj2y r9NTAnSU2zL7tlwiPiFfe4CCv3usYXe+kzEfeWkBchoOHqOfsEA3LVIrY5MIrdatQyvFKyxibnOTQOYJ02FNDA+qz12cztMS+fm81LYy4xCtjwTPLsr1cEhKWg//T7YBff4svCEJ+WQq8TnYEoGmORspSnTbVf4ZpsqAALbk4whUl392DwJcg1i+BC5pSrFG92Pg/5iQAy00uHXafyCSxJurEJTYyt5Hb/gJitTb98xJMzgdJw37DLZR/nMgQX8Eee76dKQGbwTNbdGbXF9MRXmByz0gANrjut2N75MGTTcJufGiLaTM2VFFpCKTa/y11XjlPRaZqwUtAoj2iT7uMC2uzPPPdyQkh6xtn 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 Thu, 22 Jan 2026 20:10:44 +1100 Balbir Singh wrote: > >> - Intel has demonstrated that this works and is still getting blocked. > >> > >> - This entire thread is about a fixes patch for large device pages. > >> Changing prep_compound_page is completely out of scope for a fixes > >> patch, and honestly so is most of the rest of what’s being proposed. > > > > FWIW I'm ok if this lands as a fix patch, and perceived the discussion to be > > about how refactor things more properly afterwards, going forward. > > > > I've said the same thing and I concur, we can use the patch as-is and > change this to set the relevant identified fields after 6.19 So the plan is to add this patch to 6.19-rc and take another look at patches [2-5] during next -rc cycle? I think the plan is to take Matthew's work via the DRM tree? But if people want me to patchbunny this fix then please lmk. I presently have Signed-off-by: Matthew Brost Signed-off-by: Francois Dugast Acked-by: Felix Kuehling Reviewed-by: Balbir Singh If people wish to add to this then please do so. I'll restore this patch into mm.git's hotfix branch (and hence linux-next) because testing.