From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.yourmailgateway.de (relay.yourmailgateway.de [188.68.63.162]) (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 7A49B4503EB for ; Thu, 3 Sep 2026 11:22:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=188.68.63.162 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788434573; cv=none; b=mTYC3fYPdAhijR7jkxZvn8xKlqA9O5CYWK0rk4OyQ06xcATGJZxfhQOY8/kJh8mDKtQ2yUPXWZA1FU7bWbvEZV+jMDCSnNeYQ7o90xs9f4uJbfERQbSyZnH6Ea8Ag9OyRl31mNt2xccZ8zGF/1tKuuN2Baq908Yf/dSd/DnCV1g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788434573; c=relaxed/simple; bh=s2s73udoeAG1FqA+NnDDQaYcr8kCzvCv0Y93hGQPH3I=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=FddFohiuP1rER2s/iEzbAQXrFQBJ5Ix1kJKLAqgKuTCBWbkye4SZ88nO6/b0SHR6Ni/4ydrYELMKIQH/Yvl7nxHrLRGnNWHCS4nlGSDqCoQi/sryISIQo/3YYL3WfBVRHbyC7EKW8vFPNMlLPjzCz6wT/h9i/gLl+mcag8XMNeg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=leemhuis.info; spf=pass smtp.mailfrom=leemhuis.info; dkim=pass (2048-bit key) header.d=leemhuis.info header.i=@leemhuis.info header.b=AEZepDfZ; arc=none smtp.client-ip=188.68.63.162 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=leemhuis.info Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=leemhuis.info Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=leemhuis.info header.i=@leemhuis.info header.b="AEZepDfZ" Received: from mors-relay-8201.netcup.net (localhost [127.0.0.1]) by mors-relay-8201.netcup.net (Postfix) with ESMTPS id 4hbHJM35T6z4Lgs; Thu, 3 Sep 2026 13:22:43 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=leemhuis.info; s=key2; t=1788434563; bh=s2s73udoeAG1FqA+NnDDQaYcr8kCzvCv0Y93hGQPH3I=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=AEZepDfZpbXHgj9+qc4/SU3B7TTgllNDoBFzRJjugPyhR7ygotizCGgmaVOI0Q0RR kNe136XRxrGkhOCPYbv3tW4oZJ2Sjn3IYkXYKVB5+uCExo8DNiFmvU3jO6+pnl2nS3 xrGqNKtCOOHHm5NGHkBSPONRukD3dmWuI6A7Vm9q5JrhBaeU3U/PF33Td9BoXpj67Y DA3UGa3SMJRkLelwLzcTN1DdP6o/dY/i6WmF0NiVue7BT8stpF5M67P8QS4ZijUuOZ Jb4fVVORVZn2QTjmV2eGpQgsZSeBaqGceefiik/vIfaJ2bT8V6VDkeAC6NA2rjoye4 tx5U+ix0cBM9Q== Received: from policy02-mors.netcup.net (unknown [46.38.225.35]) by mors-relay-8201.netcup.net (Postfix) with ESMTPS id 4hbHJM2PfJz4LcW; Thu, 3 Sep 2026 13:22:43 +0200 (CEST) Received: from mxe9fb.netcup.net (unknown [10.243.12.53]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by policy02-mors.netcup.net (Postfix) with ESMTPS id 4hbHJK6jymz8sZP; Thu, 3 Sep 2026 13:22:41 +0200 (CEST) Received: from [IPV6:2a02:8108:8984:1d00:a0cf:1912:4be:477f] (unknown [IPv6:2a02:8108:8984:1d00:a0cf:1912:4be:477f]) by mxe9fb.netcup.net (Postfix) with ESMTPSA id 115705F9C6; Thu, 3 Sep 2026 13:22:37 +0200 (CEST) Authentication-Results: mxe9fb; spf=pass (sender IP is 2a02:8108:8984:1d00:a0cf:1912:4be:477f) smtp.mailfrom=regressions@leemhuis.info smtp.helo=[IPV6:2a02:8108:8984:1d00:a0cf:1912:4be:477f] Received-SPF: pass (mxe9fb: connection is authenticated) Message-ID: <985770a7-e488-456a-a9fa-aa71f1cbafd5@leemhuis.info> Date: Thu, 3 Sep 2026 13:22:35 +0200 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: [REGRESSION] Power9 pseries boot hang in v7.2-rc6, narrowed to PowerPC GENERIC_ENTRY conversion window To: Venkat Rao Bagalkote , Mukesh Kumar Chaurasiya Cc: Shrikanth Hegde , LKML , linuxppc-dev , Madhavan Srinivasan , "Christophe Leroy (CS GROUP)" , Peter Zijlstra , Linux kernel regressions list References: <96dae110-f79b-4e54-8a9b-514369019b5d@linux.ibm.com> <6d1b5f38-f4e4-46ca-88b4-7c18dd6c6280@linux.ibm.com> <2f7e6c34-7258-4b20-a38e-cedebccb835f@linux.ibm.com> From: Thorsten Leemhuis Content-Language: de-DE, en-US X-Enigmail-Draft-Status: N11222 Autocrypt: addr=linux@leemhuis.info; keydata= xsFNBFJ4AQ0BEADCz16x4kl/YGBegAsYXJMjFRi3QOr2YMmcNuu1fdsi3XnM+xMRaukWby47 JcsZYLDKRHTQ/Lalw9L1HI3NRwK+9ayjg31wFdekgsuPbu4x5RGDIfyNpd378Upa8SUmvHik apCnzsxPTEE4Z2KUxBIwTvg+snEjgZ03EIQEi5cKmnlaUynNqv3xaGstx5jMCEnR2X54rH8j QPvo2l5/79Po58f6DhxV2RrOrOjQIQcPZ6kUqwLi6EQOi92NS9Uy6jbZcrMqPIRqJZ/tTKIR OLWsEjNrc3PMcve+NmORiEgLFclN8kHbPl1tLo4M5jN9xmsa0OZv3M0katqW8kC1hzR7mhz+ Rv4MgnbkPDDO086HjQBlS6Zzo49fQB2JErs5nZ0mwkqlETu6emhxneAMcc67+ZtTeUj54K2y Iu8kk6ghaUAfgMqkdIzeSfhO8eURMhvwzSpsqhUs7pIj4u0TPN8OFAvxE/3adoUwMaB+/plk sNe9RsHHPV+7LGADZ6OzOWWftk34QLTVTcz02bGyxLNIkhY+vIJpZWX9UrfGdHSiyYThHCIy /dLz95b9EG+1tbCIyNynr9TjIOmtLOk7ssB3kL3XQGgmdQ+rJ3zckJUQapLKP2YfBi+8P1iP rKkYtbWk0u/FmCbxcBA31KqXQZoR4cd1PJ1PDCe7/DxeoYMVuwARAQABzSdUaG9yc3RlbiBM ZWVtaHVpcyA8bGludXhAbGVlbWh1aXMuaW5mbz7CwZQEEwEKAD4CGwMFCwkIBwMFFQoJCAsF FgIDAQACHgECF4AWIQSoq8a+lZZX4oPULXVytubvTFg9LQUCaOO74gUJHfEI0wAKCRBytubv TFg9Lc4iD/4omf2z88yGmior2f1BCQTAWxI2Em3S4EJY2+Drs8ZrJ1vNvdWgBrqbOtxN6xHF uvrpM6nbYIoNyZpsZrqS1mCA4L7FwceFBaT9CTlQsZLVV/vQvh2/3vbj6pQbCSi7iemXklF7 y6qMfA7rirvojSJZ2mi6tKIQnD2ndVhSsxmo/mAAJc4tiEL+wkdaX1p7bh2Ainp6sfxTqL6h z1kYyjnijpnHaPgQ6GQeGG1y+TSQFKkb/FylDLj3b3efzyNkRjSohcauTuYIq7bniw7sI8qY KUuUkrw8Ogi4e6GfBDgsgHDngDn6jUR2wDAiT6iR7qsoxA+SrJDoeiWS/SK5KRgiKMt66rx1 Jq6JowukzNxT3wtXKuChKP3EDzH9aD+U539szyKjfn5LyfHBmSfR42Iz0sofE4O89yvp0bYz GDmlgDpYWZN40IFERfCSxqhtHG1X6mQgxS0MknwoGkNRV43L3TTvuiNrsy6Mto7rrQh0epSn +hxwwS0bOTgJQgOO4fkTvto2sEBYXahWvmsEFdLMOcAj2t7gJ+XQLMsBypbo94yFYfCqCemJ +zU5X8yDUeYDNXdR2veePdS3Baz23/YEBCOtw+A9CP0U4ImXzp82U+SiwYEEQIGWx+aVjf4n RZ/LLSospzO944PPK+Na+30BERaEjx04MEB9ByDFdfkSbM7BTQRSeAENARAAzu/3satWzly6 +Lqi5dTFS9+hKvFMtdRb/vW4o9CQsMqL2BJGoE4uXvy3cancvcyodzTXCUxbesNP779JqeHy s7WkF2mtLVX2lnyXSUBm/ONwasuK7KLz8qusseUssvjJPDdw8mRLAWvjcsYsZ0qgIU6kBbvY ckUWkbJj/0kuQCmmulRMcaQRrRYrk7ZdUOjaYmjKR+UJHljxLgeregyiXulRJxCphP5migoy ioa1eset8iF9fhb+YWY16X1I3TnucVCiXixzxwn3uwiVGg28n+vdfZ5lackCOj6iK4+lfzld z4NfIXK+8/R1wD9yOj1rr3OsjDqOaugoMxgEFOiwhQDiJlRKVaDbfmC1G5N1YfQIn90znEYc M7+Sp8Rc5RUgN5yfuwyicifIJQCtiWgjF8ttcIEuKg0TmGb6HQHAtGaBXKyXGQulD1CmBHIW zg7bGge5R66hdbq1BiMX5Qdk/o3Sr2OLCrxWhqMdreJFLzboEc0S13BCxVglnPqdv5sd7veb 0az5LGS6zyVTdTbuPUu4C1ZbstPbuCBwSwe3ERpvpmdIzHtIK4G9iGIR3Seo0oWOzQvkFn8m 2k6H2/Delz9IcHEefSe5u0GjIA18bZEt7R2k8CMZ84vpyWOchgwXK2DNXAOzq4zwV8W4TiYi FiIVXfSj185vCpuE7j0ugp0AEQEAAcLBfAQYAQoAJgIbDBYhBKirxr6Vllfig9QtdXK25u9M WD0tBQJo47viBQkd8QjTAAoJEHK25u9MWD0tCH8P/1b+AZ8K3D4TCBzXNS0muN6pLnISzFa0 cWcylwxX2TrZeGpJkg14v2R0cDjLRre9toM44izLaz4SKyfgcBSj9XET0103cVXUKt6SgT1o tevoEqFMKKp3vjDpKEnrcOSOCnfH9W0mXx/jDWbjlKbBlN7UBVoZD/FMM5Ul0KSVFJ9Uij0Z S2WAg50NQi71NBDPcga21BMajHKLFzb4wlBWSmWyryXI6ouabvsbsLjkW3IYl2JupTbK3viH pMRIZVb/serLqhJgpaakqgV7/jDplNEr/fxkmhjBU7AlUYXe2BRkUCL5B8KeuGGvG0AEIQR0 dP6QlNNBV7VmJnbU8V2X50ZNozdcvIB4J4ncK4OznKMpfbmSKm3t9Ui/cdEK+N096ch6dCAh AeZ9dnTC7ncr7vFHaGqvRC5xwpbJLg3xM/BvLUV6nNAejZeAXcTJtOM9XobCz/GeeT9prYhw 8zG721N4hWyyLALtGUKIVWZvBVKQIGQRPtNC7s9NVeLIMqoH7qeDfkf10XL9tvSSDY6KVl1n K0gzPCKcBaJ2pA1xd4pQTjf4jAHHM4diztaXqnh4OFsu3HOTAJh1ZtLvYVj5y9GFCq2azqTD pPI3FGMkRipwxdKGAO7tJVzM7u+/+83RyUjgAbkkkD1doWIl+iGZ4s/Jxejw1yRH0R5/uTaB MEK4 In-Reply-To: <2f7e6c34-7258-4b20-a38e-cedebccb835f@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-PPP-Message-ID: <178843455745.2934421.2400865465999497924@mxe9fb.netcup.net> X-Rspamd-Server: rspamd-worker-8404 X-Rspamd-Queue-Id: 115705F9C6 X-NC-CID: Vgtopi+KpcmPtuNCznG2/zksBmHE1g104SsqyVcNx+JsQK8gVvQ= On 8/12/26 07:16, Venkat Rao Bagalkote wrote: > On 11/08/26 6:16 pm, Mukesh Kumar Chaurasiya wrote: >> On Tue, Aug 11, 2026 at 11:37:45AM +0530, Mukesh Kumar Chaurasiya wrote: >>> On Mon, Aug 10, 2026 at 05:19:27PM +0530, Venkat Rao Bagalkote wrote: >>>> On 04/08/26 8:23 pm, Shrikanth Hegde wrote: >>>>> On 8/4/26 2:04 PM, Venkat Rao Bagalkote wrote: >>>>>> >>>>>> I'm seeing a boot regression on a Power9 pseries LPAR. The system >>>>>> hangs very early during boot after: >>>>>> >>>>>> Quiescing Open Firmware ... >>>>>> Booting Linux via __start() ... >>>>>> >>>>> That is strange. not sure where to look at without any logs. >>>>> Is it a specific config that fails or this specific LPAR that fails? >>>>> >>> Is this a specific lpar or all power9 pseries are exhibiting same >>> behaviour? > Its specific to a lpar. >> >> Can you try the below fix? > [...] > > I tired this fix, but issue still persists. This regression made it to my list of tracked regression -- and it looks like this stalled. Is that the case? Or was this resolved meanwhile? Ciao, Thorsten