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=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,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 DB402C3B1A1 for ; Fri, 14 Feb 2020 15:54:02 +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 B31C92465D for ; Fri, 14 Feb 2020 15:54:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="vjIFgXDZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B31C92465D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 437286F9CC; Fri, 14 Feb 2020 15:54:01 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1DC156F9CC; Fri, 14 Feb 2020 15:54:00 +0000 (UTC) Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1B20C24681; Fri, 14 Feb 2020 15:53:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581695640; bh=YPGPEDMa2swDKgTCQRDKlLnyvqjdbgcYK9BNY5SuAws=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vjIFgXDZuwtn8ZsTT1jqbfOMfdSZ6+WjkW3AZogYFACLBaIW6n2V7YXcOMNX4VNmH yoiTh9mtyrHfm64zLBMWq4FyddILky7VcoJvnAqPbU2YJSWYgrb0fQ1z2TWX+FWmjb dHfpJ796eQUU92+D3/IYp6ChZ/CkUiufoYD8LmDw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.5 235/542] drm/amdgpu: fix KIQ ring test fail in TDR of SRIOV Date: Fri, 14 Feb 2020 10:43:47 -0500 Message-Id: <20200214154854.6746-235-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214154854.6746-1-sashal@kernel.org> References: <20200214154854.6746-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sasha Levin , dri-devel@lists.freedesktop.org, Emily Deng , amd-gfx@lists.freedesktop.org, Alex Deucher , Monk Liu Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" 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 c17505fba9884..332b9c24a2cd0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -3639,8 +3639,6 @@ 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 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel