From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from madrid.collaboradmins.com (madrid.collaboradmins.com [46.235.227.194]) (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 994087442A for ; Thu, 4 Apr 2024 09:26:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.235.227.194 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712222796; cv=none; b=q8b+4NS82fXAj8+V5nnv13PV6BeycUzv0FwLe6Yh46tjjL6jYehV/jWJS8rmb/d3etSzNTF+YunWEdK1dmKSIBf/OmqG3/mfjg8GMHitq5nBUOb1MyDjjTFOF4qLoxpBGrzrmM6ERHXsWHM48m+uROv2orZWAZJE5Xw10UeJAW0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712222796; c=relaxed/simple; bh=XAc3BIhJUg3umIIjqLa8/qsx1yVlz8S4sxmtR7CkB14=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=F2daPvUo0xBwvWgNBOGWvWJ16qBr5rtueuzf3pKJdemxPmJqTt9mOWo4wX7mKtFlgQe1pw7IlNjwFUYNZzdtEtpji0uQNFIpBHfangKS9iD4sSmOV3ZB1y0Tlq9Ahbwgb/E2HhinZvlFwRmyPH3MJaHUfX655NdK6TVq9+r6Pt4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b=vv736jNp; arc=none smtp.client-ip=46.235.227.194 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="vv736jNp" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1712222792; bh=XAc3BIhJUg3umIIjqLa8/qsx1yVlz8S4sxmtR7CkB14=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vv736jNpmicCIQP5dOfis7w7uG6VPaYsYmPMO5hX/jw3+pqZAd3SM5guyyeE1DsM4 WVbgaRBAS5eGqZlbD4Raqgds6QwW9bG7SOqDrU769EEyZTrsGuI9GwLQOTfrcS4bAw 5NcR6MgYFXogzK2Eiy9wL48rCZ3nZhnax+EhnHaNz+RrGfGE1kfD1mms1zhDSB6Ahm SNxvdd6Y7ndLA39+T/DknUeLRLmaXVyOThMvLaNsypHD/8UjnRUDsBHT/HEjStKJv3 1qAsRatLsj9Bq4act0U0JmX8MGts5JXR335bY4T++FtR77Xdon9eHwtCydfR/+eZan P8j1qtVcwERkQ== Received: from localhost.localdomain (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: laura.nao) by madrid.collaboradmins.com (Postfix) with ESMTPSA id 6A0483782117; Thu, 4 Apr 2024 09:26:32 +0000 (UTC) From: Laura Nao To: regressions@leemhuis.info Cc: kernel@collabora.com, laura.nao@collabora.com, linux-kernel@vger.kernel.org, regressions@lists.linux.dev, tglx@linutronix.de, x86@kernel.org Subject: Re: [REGRESSION] mainline boot regression on AMD Stoney Ridge Chromebooks Date: Thu, 4 Apr 2024 11:26:59 +0200 Message-Id: <20240404092659.176813-1-laura.nao@collabora.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <09d67d1d-2c65-4872-b38e-665eda154339@leemhuis.info> References: <09d67d1d-2c65-4872-b38e-665eda154339@leemhuis.info> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Thorsten, On 4/4/24 10:24, Linux regression tracking (Thorsten Leemhuis) wrote: > [/me added x86 team] > > On 28.03.24 12:50, Laura Nao wrote: >>> >>> I ran a manual bisection to track down the root cause for this >>> regression and landed on the c749ce >>> commit from this series: >>> https://lore.kernel.org/all/20240212153625.145745053@linutronix.de/ > > FWIW, that commit is c749ce393b8fe9 ("x86/cpu: Use common topology code > for AMD") from tglx that was part of the "x86/cpu: Rework topology > evaluation" series. > >>> Do you have any insight on this issue or any suggestion on how to >>> effectively debug this? >>> >>> Thank you! > > Hmmm, it looks like this did not make any progress. Thomas, did this > fall through the cracks due to Easter, or is this this on your todo list? > > Or was there some progress and I just missed it? > > Laura Nao, I assume the problem is still happening? Yes, I confirm the issue is still happening. See e.g. KernelCI report for next-20240403: https://linux.kernelci.org/test/plan/id/660dbeed148e1a8a284c4372/ > > FWIW, this was the initial problem description: > >>>> KernelCI has identified a mainline boot regression [1] on the following >>>> AMD Stoney Ridge Chromebooks (grunt family), between v6.8 (e8f897) and >>>> v6.8-1185-g855684c7d938 (855684): >>>> - Acer Chromebook Spin 311 R721T (codename kasumi360) >>>> - HP Chromebook 14 (codename careena) >>>> - HP Chromebook 11A G6 EE (codename barla) >>>> >>>> The kernel doesn't boot at all and nothing is reported on the serial >>>> console after "Starting kernel ...". The issue is still present on the >>>> latest mainline revision. >>>> The defconfig used by KernelCI for the boot tests can be found in [2]. >>>> >>>> Sending this report in order to track the regression while a fix is >>>> identified. >>>> >>>> Thanks, >>>> >>>> Laura >>>> >>>> [1] https://linux.kernelci.org/test/case/id/65fca98e3883a392524c4380/ >>>> [2] >>>> https://storage.kernelci.org/mainline/master/v6.8-11837-g2ac2b1665d3fb/x86_64/x86_64_defconfig%2Bx86-board/gcc-10/config/kernel.config > > > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) > -- > Everything you wanna know about Linux kernel regression tracking: > https://linux-regtracking.leemhuis.info/about/#tldr > If I did something stupid, please tell me, as explained on that page. > > #regzbot poke