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Fri, 6 Feb 2026 13:08:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0EF11C19422; Fri, 6 Feb 2026 13:08:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770383330; bh=yQatAuidA98Ax17IPcwzDzo7BEX1JG3THZB2KlSl+JI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=d9sEWGFiaaRuc0sRdnQAcuG1352EjsHTlcUcZGWkuztARjNwJJPyYsFnT49xnGmu0 7RHw4Tkuma5AimwbVkiWgqlHShrqnXx8/G7FadMgRziOJSchgxeIt/+2oZYCYuX154 ysHzufYNUs+vgv+HRh/pQNvSxxpX86RNqQAgoFFvpfc02+PO91cogUGWhLTSINmPPx x9eXbp0TD4j1ScpA2ICUEfIuZEK+I+4IBrX2hp0brX9ZJEDv0Zav3wHtmIBWiLjrnY yV9VKuehMQ8VweK5VFvGLG5DUYp82+uy11I81WooluYehQahb5lQAYEC1YKZf9zTQw vDF+s8HaV4ZJQ== Message-ID: Date: Fri, 6 Feb 2026 14:08:42 +0100 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 00/13] Remove device private pages from physical address space To: Jordan Niethe , linux-mm@kvack.org Cc: balbirs@nvidia.com, matthew.brost@intel.com, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, ziy@nvidia.com, apopple@nvidia.com, lorenzo.stoakes@oracle.com, lyude@redhat.com, dakr@kernel.org, airlied@gmail.com, simona@ffwll.ch, rcampbell@nvidia.com, mpenttil@redhat.com, jgg@nvidia.com, willy@infradead.org, linuxppc-dev@lists.ozlabs.org, intel-xe@lists.freedesktop.org, jgg@ziepe.ca, Felix.Kuehling@amd.com, jhubbard@nvidia.com, maddy@linux.ibm.com, mpe@ellerman.id.au, ying.huang@linux.alibaba.com References: <20260202113642.59295-1-jniethe@nvidia.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit > By removing the device private pages from the physical address space, > this series also opens up the possibility to moving away from tracking > device private memory using struct pages in the future. This is > desirable as on systems with large amounts of memory these device > private struct pages use a signifiant amount of memory and take a > significant amount of time to initialize. > > Changes in v6 > ------------- > - Fix maybe unused in kgd2kfd_init_zone_device() > - Replace division by PAGE_SIZE with DIV_ROUND_UP() when setting > nr_pages. This mirrors the align up that previously happened in > get_free_mem_region() > > Note removed previous discussion in the cover letter relating to aarch64 > and memremap_pages() as this was actually already addressed in commit > eeb8fdfcf090 ("arm64: Expose the end of the linear map in PHYSMEM_END"). > Now that I stumbled over v6, same comment; planning on taking a look soon. -- Cheers, David