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 95F62F483CC for ; Mon, 23 Mar 2026 17:06:03 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3D27F10E04C; Mon, 23 Mar 2026 17:06:03 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="niCufpwf"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5447F10E04C for ; Mon, 23 Mar 2026 17:05:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1774285558; x=1805821558; h=message-id:subject:from:to:cc:date:in-reply-to: references:content-transfer-encoding:mime-version; bh=u0WDHDtx0Nas+xeexJDDUe1VHymb2wAO1dz14oqFG8g=; b=niCufpwf0/L8o2BS+YcCvP/JRft71ZWjHSNLT8Gv2ivIDbxZFbK0AC3v 7TwSIrIr7Bn2ZfNblVHlpk4wi89hEa9J3Fi/6qI229u2alkpBu7KhdtiA y6BXFkJOq88r0NKiG9OVxQVaGht9oZ8DYsoQOV1Hwm9wKEYdxN5+ajS50 nhUqOKMUvxqE+Q6p3N+s/kXz1ARYx0hb0UqD7C5MllnBKajV5cx1ir41c uPmPqHo+T9pnq2TQW7WHeLNK+c9L/BKSHzGBR76oC+8KNfCxk3JdoDiSt 818sjCyskxChR5y4WkbzC5g9NoFIdXRjQtDFpJcWGpA9CQKMeqvUGGcjs A==; X-CSE-ConnectionGUID: lZ9UhwKtThSJ4gF8h/uaHw== X-CSE-MsgGUID: gaImjW1bQYiThlNtuyTDaA== X-IronPort-AV: E=McAfee;i="6800,10657,11738"; a="75311525" X-IronPort-AV: E=Sophos;i="6.23,137,1770624000"; d="scan'208";a="75311525" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orvoesa110.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Mar 2026 10:05:46 -0700 X-CSE-ConnectionGUID: zjf4hqT7S7en/u8B3W5BmA== X-CSE-MsgGUID: /Rc39GpNQJS1+Y/QgJAxrA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,137,1770624000"; d="scan'208";a="247120965" Received: from dalessan-mobl3.ger.corp.intel.com (HELO [10.245.244.73]) ([10.245.244.73]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Mar 2026 10:05:45 -0700 Message-ID: Subject: Re: [PATCH i-g-t 0/1] tests/xe_vm: Add oversubscribe concurrent bind stress test From: Thomas =?ISO-8859-1?Q?Hellstr=F6m?= To: Sobin Thomas , igt-dev@lists.freedesktop.org Cc: nishit.sharma@intel.com Date: Mon, 23 Mar 2026 18:05:42 +0100 In-Reply-To: <20260218164417.856114-1-sobin.thomas@intel.com> References: <20260218164417.856114-1-sobin.thomas@intel.com> Organization: Intel Sweden AB, Registration Number: 556189-6027 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.3 (3.58.3-1.fc43) MIME-Version: 1.0 X-BeenThere: igt-dev@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development mailing list for IGT GPU Tools List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: igt-dev-bounces@lists.freedesktop.org Sender: "igt-dev" Hi, On Wed, 2026-02-18 at 16:44 +0000, Sobin Thomas wrote: > Add an xe_vm subtest that oversubscribes VRAM and issues > concurrent binds into a single VM (scratch-page mode) to > reproduce the dma-resv/bind race found under memory pressure. > Prior coverage lacked any case that combined multi-process bind > pressure with VRAM oversubscription, so bind/submit could > panic (NULL deref in xe_pt_stage_bind) instead of failing cleanly. > The new test expects successful completion or ENOMEM/EDEADLK. No need to add a cover-letter when there is only a single patch. Just add all information in the patch cover-message. Are you seeing an EDEADLK error? That sounds like a KMD bug. Thanks, Thomas >=20 > Sobin Thomas (1): > =C2=A0 tests/xe_vm: Add oversubscribe concurrent bind stress >=20 > =C2=A0tests/intel/xe_vm.c | 421 > ++++++++++++++++++++++++++++++++++++++++++++ > =C2=A01 file changed, 421 insertions(+)