From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout.gmx.net (mout.gmx.net [212.227.15.15]) (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 2A0E81990A7; Thu, 30 Oct 2025 14:21:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.15.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761834081; cv=none; b=MkaBSAl4e2eaUuX6xtunF1/OthUrgXiYiKt1NAnmBi8i+7u6WYt7FhB7lgd+f/OC2rjUeflKouNImmuRLHxHdVfSbTrAKv/b/uwt6mT6Ws61T910cAFpk2cH8WO1P/DSRc7pi1Z564kuyzugTDuYJkHI/BusPQo5ffKaA+hBwEU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761834081; c=relaxed/simple; bh=cpWP1PDpmQC8mrIhQknuZq+cukReClKurwt6mtHnFZg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=HdjM4dWanfTlfrt9zzSj1r6pnE82VD2zYVEmosgOWnGzUWyG1Y06rXjGa/aHqIhup+/h+CJQV8HfzNDHtdfGba7KBvEAVk/iU1WOZ6TsThnuiRSh60WenPaVQbuVXWfFlBK/MXTZmhFgzQkKgsJGtL3ZyQnuVMj2b87emnwJKv8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gmx.de; spf=pass smtp.mailfrom=gmx.de; dkim=pass (2048-bit key) header.d=gmx.de header.i=deller@gmx.de header.b=JAeVHA6X; arc=none smtp.client-ip=212.227.15.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gmx.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmx.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmx.de header.i=deller@gmx.de header.b="JAeVHA6X" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmx.de; s=s31663417; t=1761834077; x=1762438877; i=deller@gmx.de; bh=52j1php9L8cIvUxewIkUMNjUXJ3OzivZO+CGo1ph/+U=; h=X-UI-Sender-Class:Message-ID:Date:MIME-Version:Subject:To:Cc: References:From:In-Reply-To:Content-Type: Content-Transfer-Encoding:cc:content-transfer-encoding: content-type:date:from:message-id:mime-version:reply-to:subject: to; b=JAeVHA6XNxuE6xrXMEEz1muBFmwstNNkOmJQyrEgEw1qGmYqcWCRK6t+TNByvihI tFUu6IOw7yKV59ic+PerJYDuNrHIXiA8aaehL6oXaFKFVfIHg+iMsaWXdV6/PyTtp 1izZGZMs7fcIi6K8lX5phzlME7inMXgo2iJCzIg084DHlNzHrz316i5XvcIu/Xel0 haekdGFLtjuIB4utUEQwtC+L4Lslrabp5eIzUKV0oBwkne+iZGqnd0ayHxxGH9sCA yOvQmxWE5l2Ffooo5ImxHyxeuJJLHwND/9K/HNYwPxGeXFa/fQUsWwKmSp0vbGQvD IM7t0O9sZjK4e2l8Qg== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from [10.8.0.6] ([78.94.87.245]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1N49h5-1wDpee0ARl-014wBK; Thu, 30 Oct 2025 15:21:17 +0100 Message-ID: <4ee64e89-1e67-42b5-96e0-e79375c6f383@gmx.de> Date: Thu, 30 Oct 2025 15:21:15 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] parisc/entry: fix space adjustment on interruption To: Sven Schnelle Cc: John David Anglin , linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org, "James E.J. Bottomley" References: <20251030075605.61854-1-svens@stackframe.org> Content-Language: en-US From: Helge Deller Autocrypt: addr=deller@gmx.de; keydata= xsFNBF3Ia3MBEAD3nmWzMgQByYAWnb9cNqspnkb2GLVKzhoH2QD4eRpyDLA/3smlClbeKkWT HLnjgkbPFDmcmCz5V0Wv1mKYRClAHPCIBIJgyICqqUZo2qGmKstUx3pFAiztlXBANpRECgwJ r+8w6mkccOM9GhoPU0vMaD/UVJcJQzvrxVHO8EHS36aUkjKd6cOpdVbCt3qx8cEhCmaFEO6u CL+k5AZQoABbFQEBocZE1/lSYzaHkcHrjn4cQjc3CffXnUVYwlo8EYOtAHgMDC39s9a7S90L 69l6G73lYBD/Br5lnDPlG6dKfGFZZpQ1h8/x+Qz366Ojfq9MuuRJg7ZQpe6foiOtqwKym/zV dVvSdOOc5sHSpfwu5+BVAAyBd6hw4NddlAQUjHSRs3zJ9OfrEx2d3mIfXZ7+pMhZ7qX0Axlq Lq+B5cfLpzkPAgKn11tfXFxP+hcPHIts0bnDz4EEp+HraW+oRCH2m57Y9zhcJTOJaLw4YpTY GRUlF076vZ2Hz/xMEvIJddRGId7UXZgH9a32NDf+BUjWEZvFt1wFSW1r7zb7oGCwZMy2LI/G aHQv/N0NeFMd28z+deyxd0k1CGefHJuJcOJDVtcE1rGQ43aDhWSpXvXKDj42vFD2We6uIo9D 1VNre2+uAxFzqqf026H6cH8hin9Vnx7p3uq3Dka/Y/qmRFnKVQARAQABzRxIZWxnZSBEZWxs ZXIgPGRlbGxlckBnbXguZGU+wsGRBBMBCAA7AhsDBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheA 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iy2SUxtv7IfIRDJwrIILibwhx4JNIyhF7E2oe/1c+VTw0AEjJFPXf2OlvQ3me19/DmabNzvPq KXuIFrVPyWD4f1LHWgZ5M3VJ0Mabn5hSY9wAbcyx1TTl3oKs24LiFM8ly+a8cCGZzT880HIZr YYwIAt9Y/YwC2+azafuP2N8NrG6zzoUYA/0UFMypiE3Y15KgJBU30ETyM3n9WAQjjmy01mKWP uJhuALDtnlWIzofXXHM1mD17joLfzrkTdImIkoG3+wRG/5M6Ds8y8wGVehcqW7sJB0DjOtwDq QfSK2RoBXzeAR+bT5Bl+G0W/K1dGQOdYfQ2GwAW9qdj61G2EB7lwAAiziUAQFABXP98bvKTD8 a09eqYcoY/09CqFg24zu8b6b+nu9xlhLW1URD0nAMFlzAcL5Z8o4y7sHAgYSeBEB3CL9mkbjK XrR+VleJInRoxFWPURGTyMXXpafrPYEx5xQ9mxXgQcsTRzhSN69p+RJQNkQiZ0D4YttGymgXr Tl6319wYTl0lnI0t+Txxnkj5blgdKDw7pOA5pivTu+4leaTQTkInzYaWFxQjpsbsRwNYOlUyB grR4MuS1mzZvG58Jpna43o8VgELhiSfaXNYTJf2HE+oLmiJqYfpCT2dY9NMEKew9a10CZjFg7 jN7K9b0q+ghZLleajWxYs2IVG0I8fBwlS/AVI8xIEzVX0TsKym2Dv2sl1ZzdFpJeLn717fJar /fkmH2QmePq0a7EaYY+m82eGvpiQxu/FquA3b6wDVGxiLUovfWJ86HzoD8McK+vEyV8xxgtN0 axQVPbrG1fsSiLZR+41bH4i6NiqDx/YfPz+WEG5vRhUdzRuv+fFFG9ozsqw8W7TzQdNNkErPP AlabxmhSjxczsDW7v3zPUE4nzXb8NuUOFNUkGDSSn0oWoScuzdIjC+qjF8pnmWeRv/Au/+eji OeWmk8MSF7UzouqbOWW2L+GqYSRdOY1opyvdt0WE0XWzB2YYIxVWkcUvikj5GtXgza5AIBCRy 2nDVtiIaYYRxvwvPkVuwOgEy5F103PC14ikvCvjgftWZ2vMt+rWtk0NLf13NaGhSAsaqsaqNb 4eLk26/yil7+CaJRC19NZ971LCPbFrmkQOdAX80Eg2OunX8xtXZrtpFlNlaP2+XP9J0J9EzMx cF9fQ== On 10/30/25 08:56, Sven Schnelle wrote: > In wide mode, the IASQ contain the upper part of the GVA > during interruption. This needs to be reversed before > the space is used - otherwise it contains parts of IAOQ. > See Page 2-13 "Processing Resources / Interruption Instruction > Address Queues" in the Parisc 2.0 Architecture Manual page 2-13 > for an explanation. >=20 > The IAOQ/IASQ space_adjust was skipped for other interruptions > than itlb misses. However, the code in handle_interruption() > checks whether iasq[0] contains a valid space. Due to the not > masked out bits this match failed and the process was killed. >=20 > Also add space_adjust for IAOQ1/IASQ1 so ptregs contains sane values. >=20 > Signed-off-by: Sven Schnelle > --- > arch/parisc/kernel/entry.S | 11 ++++++++--- > 1 file changed, 8 insertions(+), 3 deletions(-) applied. Thanks! Helge