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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 4832EC35640 for ; Fri, 21 Feb 2020 08:35:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 105DA20578 for ; Fri, 21 Feb 2020 08:35:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582274109; bh=Ib/kJYQoRP9+Z4hzql8Gs1MBOxNuMCCSr6QAxvEN8RM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Sa1IP96Dx+XFh1QFReuGZRK9tqd1D6isI04hsVBxnndjyPj6cCRFuaVSCmDmFnnGE cc2umpHHwbrpcEznlJeRgPWZXj8WV6fDbvK6O8JRjYi/Ci/b5jBZyqop3bgUpn6FkZ a8/F9D1NFiknAeT2cJz0eK5V+N9gvbzm6jUq3v10= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732806AbgBUIfH (ORCPT ); Fri, 21 Feb 2020 03:35:07 -0500 Received: from mail.kernel.org ([198.145.29.99]:42428 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732136AbgBUIIC (ORCPT ); Fri, 21 Feb 2020 03:08:02 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 409D72465D; Fri, 21 Feb 2020 08:08:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582272481; bh=Ib/kJYQoRP9+Z4hzql8Gs1MBOxNuMCCSr6QAxvEN8RM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rLG9RZL3t4Wj4B8qeJC2gcgCU2/HHcA0WP4ZBRDxHebzJL7ym83JOCc/pUr8Tm32F YqYVAxSg6OfRf1pcdztOTzHUaVTwhVZCzgK/gw6TS40+I1b6/13Jzp54ITL7VMUc11 Mw3e2vRCZF9uAmEwKKu/R3DKwe24oqK6FKxaWR8M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Monk Liu , Emily Deng , Alex Deucher , Sasha Levin Subject: [PATCH 5.4 142/344] drm/amdgpu: fix KIQ ring test fail in TDR of SRIOV Date: Fri, 21 Feb 2020 08:39:01 +0100 Message-Id: <20200221072401.715012699@linuxfoundation.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200221072349.335551332@linuxfoundation.org> References: <20200221072349.335551332@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Monk Liu [ Upstream commit 5a7489a7e189ee2be889485f90c8cf24ea4b9a40 ] issues: MEC is ruined by the amdkfd_pre_reset after VF FLR done fix: amdkfd_pre_reset() would ruin MEC after hypervisor finished the VF FLR, the correct sequence is do amdkfd_pre_reset before VF FLR but there is a limitation to block this sequence: if we do pre_reset() before VF FLR, it would go KIQ way to do register access and stuck there, because KIQ probably won't work by that time (e.g. you already made GFX hang) so the best way right now is to simply remove it. Signed-off-by: Monk Liu Reviewed-by: Emily Deng Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 7a6c837c0a85f..13694d5eba474 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3466,8 +3466,6 @@ static int amdgpu_device_reset_sriov(struct amdgpu_device *adev, if (r) return r; - amdgpu_amdkfd_pre_reset(adev); - /* Resume IP prior to SMC */ r = amdgpu_device_ip_reinit_early_sriov(adev); if (r) -- 2.20.1