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Sat, 5 Sep 2026 15:07:41 +0200 (CEST) Subject: Re: [Linux PPC] Disable PREEMPT From: Christian Zigotzky To: Shrikanth Hegde Cc: =?UTF-8?Q?Michal_Such=c3=a1nek?= , Christophe Leroy , linuxppc-dev , kvm-ppc@vger.kernel.org, Madhavan Srinivasan , Peter Zijlstra , "R.T.Dickinson" , hypexed@yahoo.com.au, mad skateman , Christian Zigotzky References: <0B5355D7-4FE4-4B16-8ADE-CBB05A1D6C16@xenosoft.de> Organization: A-EON Open Source Message-ID: <25834fb4-ac52-01f3-11c1-c277af5a4c8d@xenosoft.de> Date: Sat, 5 Sep 2026 15:07:40 +0200 X-Mailer: BrassMonkey/34.3.2.1 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 In-Reply-To: <0B5355D7-4FE4-4B16-8ADE-CBB05A1D6C16@xenosoft.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 04/09/26 11:34, Christian Zigotzky wrote: >> On 04 September 2026 at 11:24 Shrikanth Hegde wrote: >> >> can you try with latest code? maybe 7.2? there is usage >> of generic api to handle the work now which renders the patch shared long back >> which you tried irrelevant. > Thanks. I will test the RC1 of kernel 7.3 with PREEMPT enabled. > > - Christian I compiled and tested the RC1 of kernel 7.3 with PREEMPT support today [1]. Unfortunately the issue [2] still exists. The entire FSL Cyrus+ board freezes when using KVM HV with PREEMPT. I will disable PREEMPT with the Kconfig.preempt.patch [3] for the RC2. - Christian [1] https://github.com/chzigotzky/kernels/releases/tag/v7.3.0-rc1-preempt [2] https://github.com/chzigotzky/kernels/issues/19 [3] https://github.com/chzigotzky/kernels/blob/main/patches/e5500/Kconfig.preempt.patch -- Sent with BrassMonkey 34.3.2.1 (https://github.com/chzigotzky/Web-Browsers-and-Suites-for-Linux-PPC/releases/tag/BrassMonkey_34.3.2.1)