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=1793893543; b=jpQ0IRVJeb1SzXRHMKtzYOVbrABcociLXowCGP7fyRdd47Qq+G5Wn2/ke08mj6obVncq 5a/8hzkcewXSrLUv1eIMpFj2u2PgQHuklGfZDaq3C2Nhnwsj3PnmU/HKMEwOjpoeUAjNC RrO0vs88f4MgNTI4QjAaUUsKepO7nXIwyMSnoz8l2iXWVHR1JP4elI365YFK615xuTzxu 84PNwvwvjQyQU1/C9V8M87DzzIKvYzRVQ3avgRofPOeEGwEeXLd4PwDteW8yzY2mN65IA Bphp8S5jGkm5Ve9ioIMv0fYHTgQBnFR9JmEhJsMhZmDxC1WIPAlXqES7rU5uxbE+QEw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793893543; h=DMARC-Filter:Received:Received:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=7SeedL6hQESLthQ7VnwGJ/wWVq56RBH0P2R4DH0oBMo=; b=1W5mGQyl7WzHpCOBbPD5hr6q8zBtNyYiypZ8W+2bqqsQEkFttRCfsNkZ4SjpHamXsJMp AV6sKV/Zk5aP0lK8HnRlNrPxmaMIToqGdNJ7R/ULrRG1sC5PaXLWhuCiH64fNSsI6cP+M Xlnpm1PaE4i+eFFSNNXT1XP1Is78uQ5Iyc48fpquTAYrPkkrE0Y4rjf3nH3+Kqu2nTkO6 W1wy9gxL19c5FjypRlibHUewhcRp+AGKFPVmfOsC6kF7h5eca64CRaaqtGXRp32bjLTNw tE5X2dBMOwDE/V7jdYGVgOFKncaJfm28DqJTm6/4vvyIjghBpHg67fKF2g27spFNQng== 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 9C9A9606A334; Thu, 5 Nov 2026 15:45:41 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 9C9A9606A334 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 1xOzeg-00071Z-00; Thu, 05 Nov 2026 16:45:34 +0100 Received: by alpha.franken.de (Postfix, from userid 1000) id 4927FC05F8; Thu, 5 Nov 2026 16:25:29 +0100 (CET) Date: Thu, 5 Nov 2026 16:25:29 +0100 From: Thomas Bogendoerfer To: Imre Kaloz Cc: linux-mips@vger.kernel.org, Paul Burton , linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] MIPS: mm: Fix the cache error vector jump for XKPHYS kernels Message-ID: References: <20261021185709.22561-1-kaloz@kernel.org> X-Mailing-List: linux-mips@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: <20261021185709.22561-1-kaloz@kernel.org> On Wed, Oct 21, 2026 at 08:57:09PM +0200, Imre Kaloz wrote: > except_vec2_generic jumps to cache_parity_error with a j, which cannot > leave the vector's 256MB region. An XKPHYS kernel such as IP30's, linked > at 512MB, is outside it, so the j targets an unbacked address and its > speculative fetch raises bus errors on unrelated fetches. Jump to the > handler's uncached XKPHYS address instead. > > Fixes: 7505576d1c1a ("MIPS: add support for SGI Octane (IP30)") > Cc: stable@vger.kernel.org > Signed-off-by: Imre Kaloz > --- > arch/mips/mm/cex-gen.S | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) 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 ]