From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=193.175.24.41 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793893544; b=puCqfc10g79GgW/HYWkvF9DKidUfjRepz8nqw2n1FEsuETqlG9CAy/Xv7QxoGFnMB4x5 clKSR1UTQDsZjHmNT4XJ9wZCC6LfhGnszEb6bWpkMa7MYEPoygT+Ywb/YpHJGCi9GcDqr 9Bz7537P6lryhldh0ewlav1pWHS4gr+3kH8pHwjbTbM1TAjSA5VWZDWW3iHfpzqbseM0z cOfYz4dZMV4mtu4+naWC4I1acR09TMe79fcWIlILdEpMIsEkJEU3nnzEoHKDBe57TXqNC vS7JvqTCC79ThxpwzxftLNg6t4FVcZOiFsHvxeQcaBhd975dpqMuMUVvaezZThIX1uQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793893544; h=DMARC-Filter:Received:Received:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=KYFfEzPSkLd+vp7+a4R/fnMFNlM/Tj87Skq1X+PiAfo=; b=QzjDzpOf1FBh2UqAAbVyBGnRTYoQiP/xF8UBYR+lHegHCYxBOAQjc+W/ykY5IAq+WUns NuUrUf8z1x7oDlNM/IQHwt0AINZ1TiBOXIAzk7kdCGTmMai1l+jjX2h0Fs3gZlNCvQgiT fJ8AHyZTzTIgze/uC+44n565H4uOrG7cExczcrHsRpkCiVrZBh1GxavPDT3A0GgbHnsLe pR48Sb0nnvc3Cn7AMwMzTGThYkr/P6EpnoJYl4IBPm5tDW5/D4idOgNRnOyVJnyY4wCSx ZVNBc+9V9pFYQWmReehwTNbc/89BXaPShyUaYGsLy9CHKlWQAnopSwbIREhBN7wpZaQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none header.from=alpha.franken.de; spf=pass smtp.mailfrom=alpha.franken.de; arc=none smtp.remote-ip=193.175.24.41 Received: from elvis.franken.de (elvis.franken.de [193.175.24.41]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 9E936606A336; Thu, 5 Nov 2026 15:45:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 9E936606A336 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=alpha.franken.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=alpha.franken.de Received: from uucp by elvis.franken.de with local-rmail (Exim 3.36 #1) id 1xOzeh-00071j-00; Thu, 05 Nov 2026 16:45:35 +0100 Received: by alpha.franken.de (Postfix, from userid 1000) id 43714C0669; Thu, 5 Nov 2026 16:26:24 +0100 (CET) Date: Thu, 5 Nov 2026 16:26:24 +0100 From: Thomas Bogendoerfer To: Imre Kaloz Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 2/4] MIPS: sgi-ip32: Leave MACE PCI control alone in config accesses Message-ID: References: <20261021192418.7246-1-kaloz@kernel.org> <20261021192418.7246-3-kaloz@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261021192418.7246-3-kaloz@kernel.org> On Wed, Oct 21, 2026 at 09:24:16PM +0200, Imre Kaloz wrote: > mace_pci_read_config() clears the master abort interrupt enable in the > MACE PCI control register around each config read. A register read > followed by two register writes can hang CRIME 1.1 under DMA load. > > Ack master aborts in the error register instead, and follow every > write with a read so back-to-back accesses cannot form that sequence. > > Fixes: c990081bf87b ("[MIPS] Fix IP32 breakage") > Cc: stable@vger.kernel.org > Signed-off-by: Imre Kaloz > --- > arch/mips/pci/ops-mace.c | 26 +++++++++++++++++++------- > arch/mips/pci/pci-ip32.c | 2 ++ > 2 files changed, 21 insertions(+), 7 deletions(-) applied to mips-fixes Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]