From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout.gmx.net (mout.gmx.net [212.227.15.19]) (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 44FE66BFAC; Tue, 16 Apr 2024 21:24:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.227.15.19 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713302676; cv=none; b=XrCeZjKAO6NirNG2HMR6MvdLj0eQpyPyP9OQjA8qKBHIaCK2Ps1muEOsAfFIzCBT9+FbxLhrVN/SPXmsz9XwtX4eKDnYgxpxZFJLl/cdfUCQo6WR3xh//wdlbYE3GtKqRMiPd2yZOEFgqEm5Tz/CcjSsgTpBKTCgH/BlTaLVoDE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713302676; c=relaxed/simple; bh=6Er98QEzCV3v4jZJfnwfJ5MZqGreJzJUCo8yTwZXUVk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=eHo9XjSWpzQ8uBEQbIlh2BNNOmN9857XhbaTzVwqNW6M2giINJhuw1f3gmqvanxrkATTRNgtQNIYl+dHGH/w0U9Fy+MkeYxbKZg5Z1WubtRoLLCpg9oxq25T8bhakNufJHZXFK5Nw5GsWWfl2P49kuKXwVU109jbI4J504b3qkU= 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=schierlm@gmx.de header.b=RAMMC9Je; arc=none smtp.client-ip=212.227.15.19 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=schierlm@gmx.de header.b="RAMMC9Je" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmx.de; s=s31663417; t=1713302661; x=1713907461; i=schierlm@gmx.de; bh=Ka7LPxFhhP0ZNYDyQkBs58K1jS0AmF/oAMEmYL467FQ=; 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=RAMMC9Je7Wm4JIrhW/wQ8uq7xxgfyWuK67oimBToPWFom2TWFNurBWuHjpQfUq56 4/dkQqmQAejk6b9K2uJWETt6kChBri5ixNN4+1N5+8SuajYFdtbaKMyE8gBE5sapC Mhp+IDOB3ZS6DZ5HegVSMkBQrW1FHiupXvbKOHdMmfnFXjqxnND5lC496zjxSt5S2 oFGpXpRP4NUAlhc4Rua4GI+EKkVKCJcc+JT92AH+l0gWRIOf/Puf2jsA4uUqCOcBR CuJNBSK262vTFE/BXvl9/a8Umf5yiSirE3TxljIUFq+rd9JgCAJ/5CzI531mOHb7K kZTBrYui6rj3s3Iclg== X-UI-Sender-Class: 724b4f7f-cbec-4199-ad4e-598c01a50d3a Received: from [192.168.178.56] ([84.130.61.91]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1MTiPv-1sK6LR399p-00U3Sm; Tue, 16 Apr 2024 23:24:20 +0200 Message-ID: <71af4abb-cffd-449e-b397-bd3134d98fb3@gmx.de> Date: Tue, 16 Apr 2024 23:24:21 +0200 Precedence: bulk X-Mailing-List: linux-hyperv@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Early kernel panic in dmi_decode when running 32-bit kernel on Hyper-V on Windows 11 To: Michael Kelley , Jean Delvare , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui Cc: "linux-hyperv@vger.kernel.org" , "linux-kernel@vger.kernel.org" References: <2db080ae-5e59-46e8-ac4e-13cdf26067cc@gmx.de> Content-Language: de-DE From: Michael Schierl Autocrypt: addr=schierlm@gmx.de; keydata= xsFNBF+amRYBEACvwIMUTYHep294xNuk+jKA63GkZl7D3SlI4LbzJt1Cm4AvT/mQ5/UV3bAG VeB6iXDeCH28bQNXd4DymSMEzgXVkmcNws4MzFhhA/mbRuVntN8G6zGnAJb9NerBLwhEcSzN vCG7FnUKOLs+z75rQfyuBpYnzMj5prrFvCBW/3fBElajvLbDT/ZRdU7QqFmCVy7dtdk++tz+ 5pZzN4Tfy2f+DVsvdWjrQ0NX8J0FsI5QtdRLHP3oRJLTuNl7Vff6CE/wPnvFQQjguoapolFz jQFX5krR2C8axNg00qIMviGpio/AAI6La1QdSP/CpcD2QfzZPIdIaQy4yUCE/BoTBPgZWdC5 zwhmpN/qfSBs5QtUacL/4I+knomX/XyIqZNWqoVZ8FkX7i8AZO4ymuBwx8wZP5XUZwM6rzAd MMEKWrWWvks67uYmEuL4isP9QhZmG7EniWVt7is+X/alCT9cULEg+sXhHW4NOhCNlg020Bdg CHmdo7RecGqzKFIE/3RgYm+TwKc3YU/bgslIPu6Qz+Qqvz10Y4DFpyuNH6yOJMdRjpYpXYSF 6EjkFdFJKBmdpbYx08QRjPaQzt6ZYLEVm/bFhtyoBE9fyLLOjt/kERoMs+Ho4uNpjPKFfFR8 UD/SMkP7AaztCaQJT8EtczAXOtLdVar9+7143jEUuJlgg232SQARAQABzS9NaWNoYWVsIFNj aGllcmwgKFRodW5kZXJiaXJkKSA8c2NoaWVybG1AZ214LmRlPsLBlAQTAQgAPhYhBDX8Kw94 NM6vtg6y281NaFzbm/3GBQJlHx1cAhsDBQkJRv/KBQsJCAcCBhUKCQgLAgQWAgMBAh4BAheA AAoJEM1NaFzbm/3GlIkQAIXZGienuIciGMXWcvRwDSjtm+tgoTXoyFCQKuhoa2EArpa5mRQS EXZ/68jdeaEoHii4u8utNSccLUVtM8DQTGOhuwhdjDYN2a9YcUtyVCoHuE9kqd6yURzu8uEU cb3ViQUDEkv3s0ZTty4VYuEYnV+BrhFMOvfY13HsMZQ+HNpqOt+3FjB17YBXyUc84RRanmIX BcLTW+LB/y+jpWaK6CvP7Mpst3HAXTl2fp/lERGLkDjFABqgbTxAvZG9baigUoFjrhniuukw 7dZ0T7fwjDNvMRXFU4sigP77l9vwMqGwCrykYm0KnxtdWNM8mu8iPfHZyZTHv5siYv1URovx abh/6e0sDJKPipsWTIbD9AokYPzbinJNs9iVly5aAFQuo53hUnSxxjoWTPLtbgoAV4TBuScJ h40ij1cgq7cJgFORb/FhuNjgv/SJhQaL/YWBgywxI4XdMTj5mh5vIhJnewTiaLrSxDGm2aTQ O+T1r96052STv/yz8hFT2N1pMxXGtHONjQzrGyqg4b8oaBUv/qTCYGAJmFDCy5UC1awPuRcp pTmW5U75XjdxjO1pVxrZfWTMYy4I02XlEb6zisWZpwrq14rcl1C2XyNtD/q5I0q3MgKXpzxT AHSuS/IMrYHpCi4gkFDCuEQIa9QM33kPh6eAIL6zevBe1XnU1FIuk/y0zsFNBF+amRYBEACo T8ZSaqeSZ6RxkNu5f9e+Cnlvyc1R+UJUTD34nQMDzupXbbo8xCEjF6AefjopsOQ/6w4P5shd 2RGlt2cUxq4RaNlogJSwXL8wzPJSkROtDrhYMBtLiZI6XK6H6IAlnkEZIvzZCVd0y1muhKXw C5x/9aKPkWFDVfpXvSHQ9chGOWVu6QiWHVSgg/y0+cATbun1gv/zkwD+pu1N6uZdlTw34uL/ I2MRkuJIbb4M904y548aHXMDCILBRH26VQ5LwJ2jd0HblZEt+O+I6J7OovzAkFZTHu/2RvX7 Sr2rN5XIMYTKApe+nqLW3nbCD526TX5mh99+4R6nQE+A2CF4Z1uBfXkVIZftWQ4zv6qJiqrm fCFH0uOcgN/Lrz8yz3iGZ/+cbV0B4IWeZq0EVHuKzD9mZyM2j7Y6Ih1gGIqfokNgueUh/hyv DY4fEW4QZQfGwXDCxUY44dmFAcfA941S7EWDp1XqtSS4COtejPzIud3zsGnpOQRJi2s4oUOn HHVr5TdDIRD7zu0hiOkv5C4k1PNJ68goMeu1FJzFcZDOd7sZ0x71OPi4FZ10hmTAB1Op+kiu RYoNuUfCA0xwZsGF7KUdIm/Qg69FIVCAPa6Vd2rTXIbB7pgmi595wVWObaSRYrwyBbUDCfMu K1BHqMUxwnZMYcELVYAkRq3U3uL7EihvaQARAQABwsF8BBgBCAAmFiEENfwrD3g0zq+2DrLb zU1oXNub/cYFAmUfHV0CGwwFCQlG/8oACgkQzU1oXNub/ca6vRAAlKbBvN7QJz5x1mPooqY0 qz6+yJVYA4wWCFEWfdOF4oIDXR6WJpt09UNrp7JUNF2NtCZAoLdHMACMAaGM+9Ujrz93hZPP tRca7gyyolWHVIAz+setuGU9UDC9ut4MpolZbhbDunX6Ris8mkoQoWU7FgfQ8TOGTIhaPb2G rLWAIs6Qc5jtoIItnc8bbebZGn7drGKY7FFqOsggERR/6oO/mkcP3NL+5NAAX6p2w1fVLmrV D21olKqOBmSK/DS2UAKf22/MxsT0/3IKxrcL8sOqHkQ2TaDTysdWVyF1gTo9YUlbw6y/omzZ irDlwcCAxPSG2ysiDQTK/jWhmsPMZ5QclsC5/DBi369zZfVyzU6tIylThddxM+EV+l9GWPm+ wTTrVT9VStkm2nQFIfOfZrmAX7o0hNiK+cB8u8EFni1MrMk+BY5EskFRcxq97+nhFZ3z0I6q obUwLL0gH1iO/zFXdStHju7NV5d9V/OXwPMcRvSNOBPoC2b6ekP7iN0RUwBHCyNrL2Vu3LHy BwZ3jk6JR+xhRvVn2gXIMKA6qJ5XEhzGjKYYg7MnbA73jXuaa8RIvWJbMmnzkk57czt+Nycz X/YlaN5mlntK0gHYX29ddh59l2atvpzOiOi9uiRMJI6ZI+jy141kvQTgjnxUOS9mQN853jLL uxTR60TDY/d6Kz8= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:Z7o3Ads1mcXcCTU2E8zTY/MWzn/c0Q+dPQ3Z8fLPcU9+Dt0zjic Hc5HE3tBwT7CECpxqzBCjtWT9VmK3lSuMeNnrgQnjti4vvwo0cKPj3tguRkNgrv8gfbjVCo 2OqM8d1xj6Nlf7ENxLqrJYr7mlnxfD1gna0x0inNk3B2NdZCNc3uEkx5mgjE+z5OD6ZVGWs oRPyNqRYi05Tru/oAt2Sw== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:ATgbfHdK2VI=;bO2mVvUWqTtT1wd+CbJF0FTOVNf S68w+YTUu09BHLrsp8+yIVsQ/58hYOM6zvVBSYflGmiLp7KmK9CNsPlP7DPPJeDossZ2Q+QAe oUGoe1ssy7g/yCxaxBeP3AVQngRB7opPYzsXCeNf3eKQktjkcOVN7E0CUBkiVSbXYCdfFSJz9 KXCNW0smLjzHW6/DyO2M63TnLz04xM6X0etc0GTl4/oi/LAVyMKG0ER1Fzo7P6BpuQKwMOLd2 cxXjhbieHGJApLk46ETQifZprdcgutmjOH3JXF/N2UDoGorZrLinqJQ3XeX9mXSZn38KKJZZK Nwk492Difi85ANsHUqjP6W1m89dvG6RlonYDiha27RfFuMVsLzcslX1wck+wAURH8bYcJkEUG w4gkP7eo7a6zdovboTLsmB/6dhIVKU4LAXx8iX7DpZU+tj94WMVbpjqtlfZ02M4Rp/1yd09sx ai1RtLtC/jsQzZ2OnnNnhD+13vWKdGzmqWoOnkrs3zLusiIRUkZm+tdOZxLc9NHNeNWu1VCt6 t6rmLScAD6PPDpaNi7kyUM9qKdAX6HHPTw4R+cqPDNOnPWYciGUh9bF7Kn2bHF9SAVay0TBRe Wq8F60mLVWLBB2yUUDIyPqQgj3wdycJo08PClj8BkIj4Z65FLjxghWcqkG1L0tHK3aCpC92NG JkEOyMj3kPnmOu9fyxWgKbA7jaG7NBZGEE3XhERK4f2uOIXLMB5ifemAQa06NENKOSvc+TTW1 G15fJ0SSTewUD+rjGoxiFdvbjQl3AHiKhFpRGUnXvIfBqVY0a764fivYvPj6yHxIZH465NxXM e0GDuidTiopnlmQHD7E9GoEURT33jIYIUASxFnSIi9vIU= Hello, Am 16.04.2024 um 01:31 schrieb Michael Kelley: > Can you give me details of the Hyper-V VM configuration? Maybe > a screenshot of the Hyper-V Manager "Settings" for the VM would > be a good starting point, though some of the details are on > sub-panels in the UI. It used to be possible to export Hyper-V VM settings as XML, but apparently that option has been removed in Win2016/Win10, in favor of their own proprietary binary .vmcx format... Also, maybe it matters what else Hyper-V is doing. I've installed both WSL and WSA, and Windows Defender is using Core Isolation Memory Integrity. I have also enabled support for nested virtualisation in the Host/Network Switch, but not in that VM. Anyway, I just created two new VMs (one of each generation) with no hard disk and everything else default, added a DVD drive to the SCSI controller of Gen2 (which Gen1 already had on its IDE controller), disabled Secure Boot on Gen2 and added a second vCPU to Gen1 (which Gen2 already had). Afterwards, Gen2's dmidecode looks like the summary you posted, and Gen1 reproduces the issue. > I'm guessing your 32-bit Linux VM is > a Generation 1 VM. FWIW, my example was a Generation 2 VM. Very interesting that Gen2 boots 32-bit Linux better than Gen1 (there is a delay during hardware autoconfigruation (systemd-udevd) for about 30 seconds when booting Gen2 which I did not investigate yet), despite the documentation claiming not to use Gen2 for any 32-bit Host OSes. So I assume this only applies to crappy OSes that directly couple their bitness to the bitness of the UEFI firmware. To be fair, the live media I'm using uses Grub's "non-compliant" Linux loader that bypasses the kernel's EFI stub. When trying with Grub's "linuxefi" loader, Linux does not boot either, as expected. (On the Gen1 VM, the panic happens regardless whether I use grub's linux16 or linux loader, and also with SYSLINUX/ISOLINUX loader). > When you ran a 64-bit Linux and did not have the problem, was > that with exactly the same Hyper-V VM configuration, or a different > config? All my tests were performed with a single (Gen1) VM, and the only setting I changed was the number of vCPUs. Regards, Michael