From patchwork Wed Jul 21 06:26:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhenyu Wang X-Patchwork-Id: 12390083 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0BFFEC07E9B for ; Wed, 21 Jul 2021 06:21:30 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id A4F2B61029 for ; Wed, 21 Jul 2021 06:21:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A4F2B61029 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 040606E829; Wed, 21 Jul 2021 06:21:29 +0000 (UTC) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id DA41B6E829; Wed, 21 Jul 2021 06:21:27 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10051"; a="198651504" X-IronPort-AV: E=Sophos;i="5.84,257,1620716400"; d="scan'208";a="198651504" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jul 2021 23:21:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,257,1620716400"; d="scan'208";a="511385248" Received: from debian-skl.sh.intel.com ([10.239.160.37]) by fmsmga002.fm.intel.com with ESMTP; 20 Jul 2021 23:21:25 -0700 From: Zhenyu Wang To: intel-gfx@lists.freedesktop.org Date: Wed, 21 Jul 2021 14:26:07 +0800 Message-Id: <20210721062607.512307-1-zhenyuw@linux.intel.com> X-Mailer: git-send-email 2.32.0.rc2 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915/gvt: Fix cached atomics setting for Windows VM X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Xu, Terrence" , intel-gvt-dev@lists.freedesktop.org, stable@vger.kernel.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" We've seen recent regression with host and windows VM running simultaneously that cause gpu hang or even crash. Finally bisect to 58586680ffad ("drm/i915: Disable atomics in L3 for gen9"), which seems cached atomics behavior difference caused regression issue. This trys to add new scratch register handler and add those in mmio save/restore list for context switch. No gpu hang produced with this one. Cc: stable@vger.kernel.org # 5.12+ Cc: "Xu, Terrence" Fixes: 58586680ffad ("drm/i915: Disable atomics in L3 for gen9") Signed-off-by: Zhenyu Wang --- drivers/gpu/drm/i915/gvt/handlers.c | 1 + drivers/gpu/drm/i915/gvt/mmio_context.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index 98eb48c24c46..345b4be5ebad 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -3134,6 +3134,7 @@ static int init_bdw_mmio_info(struct intel_gvt *gvt) MMIO_DFH(_MMIO(0xb100), D_BDW, F_CMD_ACCESS, NULL, NULL); MMIO_DFH(_MMIO(0xb10c), D_BDW, F_CMD_ACCESS, NULL, NULL); MMIO_D(_MMIO(0xb110), D_BDW); + MMIO_D(GEN9_SCRATCH_LNCF1, D_BDW_PLUS); MMIO_F(_MMIO(0x24d0), 48, F_CMD_ACCESS | F_CMD_WRITE_PATCH, 0, 0, D_BDW_PLUS, NULL, force_nonpriv_write); diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.c b/drivers/gpu/drm/i915/gvt/mmio_context.c index b8ac80765461..f776c470914d 100644 --- a/drivers/gpu/drm/i915/gvt/mmio_context.c +++ b/drivers/gpu/drm/i915/gvt/mmio_context.c @@ -105,6 +105,8 @@ static struct engine_mmio gen9_engine_mmio_list[] __cacheline_aligned = { {RCS0, COMMON_SLICE_CHICKEN2, 0xffff, true}, /* 0x7014 */ {RCS0, GEN9_CS_DEBUG_MODE1, 0xffff, false}, /* 0x20ec */ {RCS0, GEN8_L3SQCREG4, 0, false}, /* 0xb118 */ + {RCS0, GEN9_SCRATCH1, 0, false}, /* 0xb11c */ + {RCS0, GEN9_SCRATCH_LNCF1, 0, false}, /* 0xb008 */ {RCS0, GEN7_HALF_SLICE_CHICKEN1, 0xffff, true}, /* 0xe100 */ {RCS0, HALF_SLICE_CHICKEN2, 0xffff, true}, /* 0xe180 */ {RCS0, HALF_SLICE_CHICKEN3, 0xffff, true}, /* 0xe184 */