From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 841C164 for ; Sat, 9 May 2026 00:03:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778285037; cv=none; b=SSgFncybbUIWIoiklwunHoi6Ow9MBWKjkflnljSsx4XK4g5tB5I1kR5ztLZ8qDRCp0Fm56E3Ed5J8GTW0N1/pcfVx2/OW4Znat7+0GKv0P6hW/uPaHYVkIQzgUqRMZWXacgik9/VTzObWeB5Dm00Uo9z9xhxyxXt/jy/HkIiAD4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778285037; c=relaxed/simple; bh=P/Qen/p/hgzkZSMrVAIJYJsw5zswEedUGvCpzhK6ymo=; h=Date:From:To:Cc:Subject:Message-Id:In-Reply-To:References: Mime-Version:Content-Type; b=ed0EYgcIZue7ejX5LXUlSbAQAp+xbKXnqm8LCvOCE52CXcFk/8IeoG7JR8cxntKIdtT2FtEKweKIQzeJqESam8NaAeJgDeA0DbqWgU/gxVmM6RLa6I40jMxs4WGYQKL+14ScZW3KLwFfYvgyp+9aGb2GOUCvpwqsKUqdBW/lfn8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=H9flbxHX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="H9flbxHX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3DAFCC2BCB0; Sat, 9 May 2026 00:03:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1778285037; bh=P/Qen/p/hgzkZSMrVAIJYJsw5zswEedUGvCpzhK6ymo=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=H9flbxHXrEiDkVopyYa4xIdghiK8TmpfU6i1slZ+6t3//7lG0RLJyE0Ggb243jzAP Q0ToYutOYWdxnwgUiNIwQrwO++m18C1cAyGU1fpDQeett9U53Ztruyc75QQhzd51+k 2i8J3N96mwZgl833Eeq8lABs0LcNWFBwFkdJ0kaA= Date: Fri, 8 May 2026 17:03:55 -0700 From: Andrew Morton To: Matthew Brost Cc: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Dave Chinner , Qi Zheng , Roman Gushchin , Johannes Weiner , Shakeel Butt , Kairui Song , Barry Song , Axel Rasmussen , Yuanchu Xie , Wei Xu , Tvrtko Ursulin , Thomas =?ISO-8859-1?Q?Hellstr=F6m?= , Carlos Santa , Christian Koenig , Huang Rui , Matthew Auld , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Daniel Colascione , David Hildenbrand , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 0/5] mm, drm/ttm, drm/xe: Avoid reclaim/eviction loops under fragmentation Message-Id: <20260508170355.c937b91cdd63a11e56d2225d@linux-foundation.org> In-Reply-To: <20260506033300.3534883-1-matthew.brost@intel.com> References: <20260506033300.3534883-1-matthew.brost@intel.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Tue, 5 May 2026 20:32:55 -0700 Matthew Brost wrote: > TTM allocations at higher orders can drive Xe into a pathological > reclaim loop when memory is fragmented: > > ... > > This series addresses the issue in three layers: Thanks. AI review asked a few things, nothing looked very serious to my eye: https://sashiko.dev/#/patchset/20260506033300.3534883-1-matthew.brost@intel.com