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 A2BDBC001B0 for ; Wed, 9 Aug 2023 23:05:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230046AbjHIXFY (ORCPT ); Wed, 9 Aug 2023 19:05:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39850 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229470AbjHIXFX (ORCPT ); Wed, 9 Aug 2023 19:05:23 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CAAA6E75; Wed, 9 Aug 2023 16:05:21 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 68AE3646B1; Wed, 9 Aug 2023 23:05:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A13FAC433C9; Wed, 9 Aug 2023 23:05:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1691622320; bh=YHx+lf+dtplJr3oAdqzBjUhkDbSNun/kjg6ucBP6Y9w=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=B85PEc4XOIQJLVeEYGrVbEEGEnX0kQVAY9OWcv82s0BpuQ7vkLyKItDkHVK4N1aor bBa3NcV7L5X6lu6CVbTDN3Sn9T3ufADd6hCf8XHet6IshzunXqy7rzhl9uTbapwqNd EzLnf50EZmcmVoJ6kQeW4AghThn1TAC3BF81vooC/O7pVGRcForhclTwGoszbfXN99 YNpIlcUoijPrSOwVlPTXYjyuqvNyG5uCPMT9QI3XSZKxB3/FK51VXBd8J2aSh3tzjZ Tyby4ap2GwBA6PmPpXRmb7unLUHGVu+9RMwi7oqOnnsrJ8EkM1SX3dCE6OjYovoAwj DwmBulKcGAAUg== Date: Wed, 9 Aug 2023 18:05:18 -0500 From: Bjorn Helgaas To: Wu Zongyong Cc: lukas@wunner.de, sdonthineni@nvidia.com, bhelgaas@google.com, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, wllenyj@linux.alibaba.com, wutu.xq2@linux.alibaba.com, gerry@linux.alibaba.com Subject: Re: [PATCH] PCI: Mark NVIDIA T4 GPUs to avoid bus reset Message-ID: <20230809230518.GA12130@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2dcebea53a6eb9bd212ec6d8974af2e5e0333ef6.1681129861.git.wuzongyong@linux.alibaba.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Mon, Apr 10, 2023 at 08:34:11PM +0800, Wu Zongyong wrote: > NVIDIA T4 GPUs do not work with SBR. This problem is found when the T4 > card is direct attached to a Root Port only. So avoid bus reset by > marking T4 GPUs PCI_DEV_FLAGS_NO_BUS_RESET. > > Fixes: 4c207e7121fa ("PCI: Mark some NVIDIA GPUs to avoid bus reset") > Signed-off-by: Wu Zongyong Applied to pci/virtualization for v6.6, thanks! > --- > drivers/pci/quirks.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c > index 44cab813bf95..be86b93b9e38 100644 > --- a/drivers/pci/quirks.c > +++ b/drivers/pci/quirks.c > @@ -3618,7 +3618,7 @@ static void quirk_no_bus_reset(struct pci_dev *dev) > */ > static void quirk_nvidia_no_bus_reset(struct pci_dev *dev) > { > - if ((dev->device & 0xffc0) == 0x2340) > + if ((dev->device & 0xffc0) == 0x2340 || dev->device == 0x1eb8) > quirk_no_bus_reset(dev); > } > DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, > -- > 2.34.3 >