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[106.71.19.159]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-36a5eee0f20sm6176212eec.17.2026.11.01.01.59.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 01 Nov 2026 01:59:51 -0700 (PDT) X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Subject: Re: [PATCH] mm/hmm: honor write requests for owned device-private pages From: Aveline Noir Date: Sun, 01 Nov 2026 19:58:21 +1100 Message-Id: <179352350180.2.12918668886938034091.b4-reply@b4> To: sashiko-reviews@lists.linux.dev Cc: Andrew Morton , Francois Dugast , Christoph Hellwig , Jason Gunthorpe , Leon Romanovsky , linux-kernel@vger.kernel.org, linux-mm@kvack.org, sashiko-bot@kernel.org In-Reply-To: References: <179343062238.2.2773026701442863377@gmail.com> X-Mailer: b4 0.16.0 Hi Sashiko, On Sun, 01 Nov 2026 07:29:15 +0000 sashiko-bot@kernel.org wrote: > Since no MMU notifier fired, mmu_interval_check_retry() returns false and > walk_page_range() restarts at the same hmm_vma_walk.last address. Won't this > spin forever on the unchanged SOFTLEAF_DEVICE_PRIVATE_READ entry while > holding mmap_read_lock(mm) (or mmap_write_lock(mm)), svms.lock, and > prange->migrate_mutex? Oh, I missed that. I'll try to fix it. Thanks, Aveline Noir