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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BA125C4167B for ; Mon, 11 Dec 2023 14:05:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344271AbjLKOFA (ORCPT ); Mon, 11 Dec 2023 09:05:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43720 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344175AbjLKOEF (ORCPT ); Mon, 11 Dec 2023 09:04:05 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 83ADA3270 for ; Mon, 11 Dec 2023 06:02:41 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E86A6C433C8; Mon, 11 Dec 2023 14:02:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1702303361; bh=dwADcyDW2WetwqIR+D9TN1Bko6rQzL3C8eVoG+twuIM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ou+HrEbRml9VFOMv2ULe/9Mmm7HNDGvmaEz2TAX/ujlWUf2PpL1sjJkgjXLX5g8kc z6ZozXwFsDoJrwRVEAyVIZXri0iVgJRcyq89BIIPGsiok3exLmcplzWWE58fPSNvJO NHgGQNYFQ1nE+vWMOrtFZ19TA98lYnA9tcCgCHHCYB6ZsUOZLpk6DKJvmm2vEfZvpz n43QPgJln4hOoi5G2XIdyYsLJ3FQYwURe7N3gRVffyVngSJGIkNykYd5b9e1InGjfs PXZ2uqih42ykbu7MTWC9fzh1iYoEJEji+CsczFQfUPtg7hOSYs8pZQjx1Pt+cDRbQ1 xZSd7fKrC7Jxw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dave Airlie , Danilo Krummrich , Sasha Levin , kherbst@redhat.com, lyude@redhat.com, airlied@gmail.com, daniel@ffwll.ch, bskeggs@redhat.com, dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.4 07/12] nouveau/tu102: flush all pdbs on vmm flush Date: Mon, 11 Dec 2023 09:02:00 -0500 Message-ID: <20231211140219.392379-7-sashal@kernel.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231211140219.392379-1-sashal@kernel.org> References: <20231211140219.392379-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 5.4.263 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dave Airlie [ Upstream commit cb9c919364653eeafb49e7ff5cd32f1ad64063ac ] This is a hack around a bug exposed with the GSP code, I'm not sure what is happening exactly, but it appears some of our flushes don't result in proper tlb invalidation for out BAR2 and we get a BAR2 fault from GSP and it all dies. Signed-off-by: Dave Airlie Signed-off-by: Danilo Krummrich Link: https://patchwork.freedesktop.org/patch/msgid/20231130010852.4034774-1-airlied@gmail.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c index be91cffc3b52a..315000b2f8e3e 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c @@ -32,7 +32,7 @@ tu102_vmm_flush(struct nvkm_vmm *vmm, int depth) type = 0x00000001; /* PAGE_ALL */ if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR])) - type |= 0x00000004; /* HUB_ONLY */ + type |= 0x00000006; /* HUB_ONLY | ALL PDB (hack) */ mutex_lock(&subdev->mutex); -- 2.42.0