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Wed, 15 Oct 2025 13:35:04 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 5EE7E102F22CF; Wed, 15 Oct 2025 15:34:44 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1760535303; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=oMU9G4Af1cq7AyrrzQ2eG1h+ieGKieI2qQ6GlGAzq4U=; b=pjB9mSa45RgZGf+JyVeqvP7qIc/TzHk5GVvUMqgPHqsIv5/DzktXddn8iq8xeExInGbFO5 wixpOYF6+jQHYhxwcjPd/Igt3ht5HkH8OdmdkXXb45VuNafZbpBkM+FxliSS52eqgNx0NW QryRhmGe3Ad5IhLd6KOgwVxa67bPbIHDTs1yPx1ofVCmiqrr6P2qd0m7PD/CIE2OJ3csVn fdDTCJxl+E0DiyNu1UXZ8rvLdpopGBBsnUko9D5DOTdh1z3yKofLV0l+qg2Ks/eCQJyooO a85e+wE4UeENHtsyoJHJbXIXaYY/Vs1ddszHzzrJqAY1idCLfedZDZawJ2V1BA== Date: Wed, 15 Oct 2025 15:34:42 +0200 From: Herve Codina To: Christian Zigotzky Cc: Manivannan Sadhasivam , Bjorn Helgaas , Lukas Wunner , Manivannan Sadhasivam , Ilpo =?UTF-8?B?SsOkcnZpbmVu?= , linux-pci@vger.kernel.org, mad skateman , "R.T.Dickinson" , Christian Zigotzky , linuxppc-dev , hypexed@yahoo.com.au, Darren Stevens , debian-powerpc@lists.debian.org, Thomas Petazzoni Subject: Re: [PPC] Boot problems after the pci-v6.18-changes Message-ID: <20251015153442.423e2278@bootlin.com> In-Reply-To: <76026544-3472-4953-910A-376DD42BC6D0@xenosoft.de> References: <20251015145901.3ca9d8a0@bootlin.com> <76026544-3472-4953-910A-376DD42BC6D0@xenosoft.de> Organization: Bootlin X-Mailer: Claws Mail 4.3.1 (GTK 3.24.43; x86_64-redhat-linux-gnu) 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 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 Hi Christian, On Wed, 15 Oct 2025 15:14:28 +0200 Christian Zigotzky wrote: > > Am 15 October 2025 at 02:59 pm, Herve Codina wrote: > > > > Also when it boots, it is not easy to know about the problem root cause. > > > > In my case, it was not obvious to make the relationship on my side between > > my ping timings behavior and ASPM. > > > > Of course 'git bisect' helped a lot but can we rely on that for the average > > user? > > > > Best regards, > > Hervé > > I think I will revert these modifications for the RC2. I don't know what is the future of those modifications but maybe instead of fully reverting them, maybe you could perform calls to - pcie_clkpm_override_default_link_state() and - pcie_aspm_override_default_link_state() only if a new Kconfig symbol is enabled. Of course this symbols will be disabled by default but if you want some people to test behavior, it could be interesting to have the code available in the kernel. I don't know, this was just an idea. Of course, reverting the patch is simpler than adding this new Kconfig symbol. Best regards, Hervé