From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 63D9F78F3A for ; Wed, 15 Apr 2026 00:12:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=156.67.10.101 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776211925; cv=none; b=IvsJ1VViCYM5YaPtll/AlUiFTSEGxTOujun4jvECLpQO0rDhqao/SToyJXAywdTWZ34O2M3WAmV6e/yp45ou9GtrFfOxp3hkr7BgM/l5hORlxjOF0fdBe0wr+aDj82tsPch2QbPsPYVpUiuIezEl8YGNCjhAQIPDAQqLUA2NfOU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776211925; c=relaxed/simple; bh=QYX6zOhjE5SBE8f2AYjW27oGmBb0zhr0qBuZuOUAsAg=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Y3rzWkXI2z5gG7HOetuGp3YIQHl++p4IOKEtIfU7/+JMybhMaa4zWkPbMIz1mtTOQ1FUY9vDHXe7FJQhSx5G1v61zoaWcQb9Moul5MpWbfY9tL8sSSv/HS5HI14BtKtAtZxRG/4eWndjek8R8Pff+Oud7ntrt+F5Wu2d1XSFgjE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch; spf=pass smtp.mailfrom=lunn.ch; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b=aloffz5V; arc=none smtp.client-ip=156.67.10.101 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lunn.ch Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="aloffz5V" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Transfer-Encoding:Content-Disposition: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:From: Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Content-Disposition: In-Reply-To:References; bh=9RmvYgIcDgnjc3TN0sF76qBS1rwb8ZMn0Vhou6ML3pg=; b=al offz5Vqq87vLxguFsCA/k6WAw80qDV9baqw5Bs/k+iehvTjRGyWOUlrxFGMmkUlX9sqfw9CKGELOU kMvrERRTCciWBfB373dowONE6u0gF/1CtZCtZ+lafgKvNXTS2HMZnkpqd0sA7m9q/EAraw13aL3du KYns2O3mscdOH+4=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1wCnrM-00G71s-Ce; Wed, 15 Apr 2026 02:12:00 +0200 Date: Wed, 15 Apr 2026 02:12:00 +0200 From: Andrew Lunn To: =?iso-8859-1?Q?Beno=EEt?= Dufour Cc: netdev@vger.kernel.org Subject: Re: DMA issues with the SKGE drivers Message-ID: References: <9df653d6-d7f8-4b36-87de-65daf28635dd@mail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <9df653d6-d7f8-4b36-87de-65daf28635dd@mail.com> On Tue, Apr 14, 2026 at 07:23:17PM -0400, Benoît Dufour wrote: > In 2024, I reported a bug about the SKGE driver, you can see it here: > https://bugzilla.kernel.org/show_bug.cgi?id=219270 > > Basically, the problem is that the Marvell 88E8001 on my ASUS A8V motherboard > can only work with 32bit DMA, and if trying to use 64bit DMA, the NIC won't > work at all and after some time, the operating system will become completely > unresponsive (on screen tty will stop refresh, keyboard and mouse input will > stop working too). > > The fix is quite easy: > > At the very end of the SKGE driver source code, the ASUS A8V motherboard (as > well as many other boards like the ASUS A8V Deluxe) should be added to the list > of 32bit DMA boards: > https://github.com/torvalds/linux/blob/508fed6795411f5ab277fd1edc0d7adca4946f23 > /drivers/net/ethernet/marvell/skge.c#L4150 Hi Benoît Could you submit a patch adding the needed entry for your board? Andrew