From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mo4-p02-ob.smtp.rzone.de (mo4-p02-ob.smtp.rzone.de [85.215.255.83]) (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 EC57E2E0B48 for ; Tue, 17 Feb 2026 09:44:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=85.215.255.83 ARC-Seal:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771321478; cv=pass; b=gvyzL0W1QPNzatwPp7K4AZIsLigm+xcSD7WrjNq17XYOQE2T1n+3BjeCgCK6BgRoTgL9hl51G2MPW3oGB9F9Kw4LbAZhnyS5OnLMv8sE7zuvn0sS2oab69b/BL2WOJ3BnuCGJvEhceUFufwQMzpmcgoLBGPRXVbQ5KD9L7QULJ0= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771321478; c=relaxed/simple; bh=UFI6bEADCDocQkAVEJbsgSAIUvhUSEL7ECEeZGAic7M=; h=Subject:To:Cc:References:From:Message-ID:Date:MIME-Version: In-Reply-To:Content-Type; b=CN4d55ND1py4iXmUqEatSyaUs+vOkpVzZv1kQObmgSA4j3y7722ciDJLDvtZF0GcXnzhkg/ilgWyoSFyMgvY8fuQo446wyL9lFGuVDn7mx6+cZIm9WadHC9DK/TYVnD1z/z7b2wzP7X2RfVyiM+Dp+p5aCuue4A2uBvqPx7a1/8= ARC-Authentication-Results:i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xenosoft.de; spf=none smtp.mailfrom=xenosoft.de; dkim=pass (2048-bit key) header.d=xenosoft.de header.i=@xenosoft.de header.b=TP8OIJIz; dkim=permerror (0-bit key) header.d=xenosoft.de header.i=@xenosoft.de header.b=BlyjK2XB; arc=pass smtp.client-ip=85.215.255.83 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xenosoft.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=xenosoft.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=xenosoft.de header.i=@xenosoft.de header.b="TP8OIJIz"; dkim=permerror (0-bit key) header.d=xenosoft.de header.i=@xenosoft.de header.b="BlyjK2XB" ARC-Seal: i=1; a=rsa-sha256; t=1771321459; cv=none; d=strato.com; s=strato-dkim-0002; b=DufMzvm2lOJYkTg1TomLhue/YaXTJ6OLBna3WFLiZjDI9dI9jvPPW+NjwrUZOj1mLE iiShJ5yvvPdni4D5Z0qbO88NZBhHzoagDowVJ76kFKiVWL3D9UwKED71OWf+jVnd/RGW dXviM0p0IGGFGsTpS12v7/3pQBaXiyS0W41NHzs4lyu6g1v4DPM4Ld2Pmr9O9+JoVk1m ynHOplvKE5gFAEvo6ah2UXjN7RQjdsCMpVgOfAtuV5bxXwlHteTy1FITsFdo8bqDz3hv Vwq6YHjQfszfjJKzsObdWC/psZ46qQp3wbIXtIHamygr9HFQfcCTXkDL0qnZZdy1qLBq eKDQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; t=1771321459; s=strato-dkim-0002; d=strato.com; h=In-Reply-To:Date:Message-ID:From:References:Cc:To:Subject:Cc:Date: From:Subject:Sender; bh=Dve+BEs/Ll3W4w+UZtHdl4eaEGqteiBINi8zGX9siCw=; b=C12dR7M4Ubx7qS6cOe/oLNCe7dsRk5tQ7eJJAnBS8C4Quvsz2yZMvOIKqZkbbcjr9B gplC24hg2mGYmn6nEWpXuam/Zx5Gwxv2SJ3Q+M5h1iLjsFIL5gQzpebfg7uoZfRXAwKk +v9axhi7IQlc9kU1zdHrUDaQGATX+gCsouza4hcgSp/DBMg1Rtuopv8JLJvwex2+/Bfj GUXnCnyt1JBdUUevQHW5d8CjfnZQO6UN3ViaaPDGEiCLcyj/9i2sHsVLpxUWGVZLYAMJ Owy8s4Hf5BUsjKNAGhh09vPt/IJXJVvH0zYr5jbR8V8mPSzdfZEsAJZnC8L28XI5CG+Q hwsw== ARC-Authentication-Results: i=1; strato.com; arc=none; dkim=none X-RZG-CLASS-ID: mo02 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1771321459; s=strato-dkim-0002; d=xenosoft.de; h=In-Reply-To:Date:Message-ID:From:References:Cc:To:Subject:Cc:Date: From:Subject:Sender; bh=Dve+BEs/Ll3W4w+UZtHdl4eaEGqteiBINi8zGX9siCw=; b=TP8OIJIzkYdCwyFqRywuzFHA263XC6fv+XN+OvJdVseUbrZCS8ooHrV8IVX+V5UOxF k6rU8kVgTQD4eCqpi1L+urwtI6WV2HvQohEbLMB8BEzJAyX7bRfvdEggd65cwLE6yR04 F0XH5vcGJCh1pghcJHaaDbMSi8rdl9NswHCLWeZrrQvgDQKKXJ2sFSqVzfO7GGelSwQH xhSw9kAcjVwKVpEg9ZxczFvjj/ZdPLmcB2Oerv57xoJ0wkBPo1SUHxRZnbjUOrmBTK0L ErkDBQJvXdGqBRfI7BYTKkyZlnR9D/j068lfcN3EhW+HQmkJXvpAVt/P09fAa4+133G/ YLnA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; t=1771321459; s=strato-dkim-0003; d=xenosoft.de; h=In-Reply-To:Date:Message-ID:From:References:Cc:To:Subject:Cc:Date: From:Subject:Sender; bh=Dve+BEs/Ll3W4w+UZtHdl4eaEGqteiBINi8zGX9siCw=; b=BlyjK2XBFzqgRHtv/L0+fUOxj4TWoUqC2MqW7X9S9yXLkmDS6/+CVQrYIWDoykKQp/ EwW5k4M72Uuk5lKsGYBA== X-RZG-AUTH: ":L2QefEenb+UdBJSdRCXu93KJ1bmSGnhMdmOod1DhGN0rBVhd9dFr4thIFiqT9BURIC+l7h/g" Received: from void-ppc.a-eon.tld by smtp.strato.de (RZmta 55.0.1 DYNA|AUTH) with ESMTPSA id e9337f21H9iIzOj (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256 bits)) (Client did not present a certificate); Tue, 17 Feb 2026 10:44:18 +0100 (CET) Subject: [Linux PPC] KVM PR and KVM HV do not work if the kernel was compiled with PREEMPT To: Shrikanth Hegde , linuxppc-dev , "kvm-ppc@vger.kernel.org" Cc: "R.T.Dickinson" , hypexed@yahoo.com.au, mad skateman , Christian Zigotzky References: <185d7a42-f7b4-44e1-a129-f5989d211c74@linux.ibm.com> <40154f6a-39da-959d-e039-5ab9ff62db3c@xenosoft.de> <709b864f-9daa-4a48-b3d6-39baedce63b2@linux.ibm.com> From: Christian Zigotzky Organization: A-EON Open Source Message-ID: Date: Tue, 17 Feb 2026 10:44:18 +0100 X-Mailer: BrassMonkey/33.9.1 Precedence: bulk X-Mailing-List: kvm-ppc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: <709b864f-9daa-4a48-b3d6-39baedce63b2@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 17/02/26 10:03, Shrikanth Hegde wrote: > > > On 2/17/26 2:22 PM, Christian Zigotzky wrote: >> Hi, >> >> Thank you for your patch. I tested the latest git kernel with your >> patch today. Unfortunately the system freezes while booting the VM >> with KVM HV. >> >> Cheers, >> Christian >> >> > Would it be possible to share the console log or boot log of KVM to the > point it freezes? Unfortunately there aren't any error messages. I also tried it with: gdb --args qemu-system-ppc64 -M ppce500 -cpu e5500 -m 1024 -kernel uImage-7.0-preempt -drive format=raw,file=void-live-powerpc-20230317-updated2.img,index=0,if=virtio -netdev user,id=mynet0 -device virtio-net,netdev=mynet0 -append "rw root=/dev/vda" -device virtio-gpu-pci -device virtio-mouse-pci -device virtio-keyboard-pci -enable-kvm -smp 4 and with gdb in the guest: qemu-system-ppc64 -s -S -M ppce500 -cpu e5500 -m 1024 -kernel uImage-7.0-preempt -drive format=raw,file=void-live-powerpc-20230317-updated2.img,index=0,if=virtio -netdev user,id=mynet0 -device virtio-net,netdev=mynet0 -append "rw root=/dev/vda" -device virtio-gpu-pci -device virtio-mouse-pci -device virtio-keyboard-pci -enable-kvm -smp 4 The system freezed without any error messages. -- Sent with BrassMonkey 33.9.1 (https://github.com/chzigotzky/Web-Browsers-and-Suites-for-Linux-PPC/releases/tag/BrassMonkey_33.9.1)