From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 216BEC9830D for ; Fri, 25 Sep 2026 09:07:30 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CEFD610F966; Fri, 25 Sep 2026 09:07:29 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=fail reason="signature verification failed" (2048-bit key; secure) header.d=infradead.org header.i=@infradead.org header.b="Jm2UAcpx"; dkim-atps=neutral Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3E2B110F966; Fri, 25 Sep 2026 09:07:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=KCyV94oyn7UgoSfgjaYpx+E0zyZIPbxzlpyxYGj8GX8=; b=Jm2UAcpxToTAxr+Svp1O2pM4D2 ctatdOQnUip7JuJmrAlj1RMH8E1zlPVFjc8sc3mciWWVQmMLyYIHqH6Dt3Ybcu1hVdMkiUxVlKcZm vsaiUPmIHUutP2/fkDKowSq04+IjHyu0g+bD0oub1gDqlD1X//vJV2jAxVBwKQ0T7SrSIgZmEuLMA TWrMDsdz+q2WtqoY4X5ZhkOHQ+YepDxsc64ieSY1Z6kAa6eKz8J5zGgZ7jQkjjGS9x0Q9gOKNdwBI gwaQUDi8N7wC3NC23QU+ZP6EXyWXQMEjCMzpNMlGq0CnJo/u8+RkdqU/1TVMrE2UJNuYHEwRG7tOh OmV4cLhA==; Received: from hch by bombadil.infradead.org with local (Exim 4.99.1 #2 (Red Hat Linux)) id 1xA1ts-0000000CyOj-3qzm; Fri, 25 Sep 2026 09:07:24 +0000 Date: Fri, 25 Sep 2026 02:07:24 -0700 From: Christoph Hellwig To: mpenttil@redhat.com Cc: linux-mm@kvack.org, dri-devel@lists.freedesktop.org, intel-xe@lists.freedesktop.org, linux-kernel@vger.kernel.org, David Hildenbrand , Jason Gunthorpe , Leon Romanovsky , Alistair Popple , Balbir Singh , Zi Yan , Matthew Brost , Andrew Morton , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Subject: Re: [PATCH v15 00/11] migrate on fault for device pages Message-ID: References: <20260924065313.899730-1-mpenttil@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260924065313.899730-1-mpenttil@redhat.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" On Thu, Sep 24, 2026 at 09:53:02AM +0300, mpenttil@redhat.com wrote: > Add a new flag to HMM APIs, HMM_PFN_REQ_MIGRATE, > which tells to prepare for migration also during fault handling. > For the migrate_vma_setup() call paths, new flags, MIGRATE_VMA_FAULT, > and MIGRATE_VMA_WRITE are added to tell to add fault handling to migrate. Who is going to use this? The series seems to lack an actual user for it.