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 54DA612AACA for ; Thu, 4 Apr 2024 15:22:57 +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=1712244178; cv=none; b=Hc6HizHzkI84Inv5sHIIx1xGQCHhKkK+cV6V/NzxwTVuAjXxcDo29whdR9G+HYwkfeVMItnb7X6orDeLGvTDDeZtDBrKcvR0AwQIwCi5VrLnHqpDaNU8F3caaM0w9K6AizI3eXzat/9j2AtyBA56jEBxdLjQ/KFGLX3MD30HACU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712244178; c=relaxed/simple; bh=EMwT4Y2inuVPzK35wOcuimN88Lo0Bzf/ESD4NioLRnw=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Gnwtiup4HrrFNwqp0ZgiJrk8w6whgoUXz2gIOo5uPUrpcG5umPA4acLZcAO6netqMOO8NtQzYScCZJIxuUoRHg5IF8VNznxHflh4HI2onxLbF55Tfi18lgBWFFYSzxP/7YFHyd2fxw4xhB5GWgRQaTqG7IGzmFgn+4YJUtci62k= 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=1/8yhpIY; 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="1/8yhpIY" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1712244175; bh=EMwT4Y2inuVPzK35wOcuimN88Lo0Bzf/ESD4NioLRnw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1/8yhpIYITyxW7arJHLQ6SLLqAevKgCLaeVHIKWnfYBV4KqGyJNm5GaojBpK5JyhZ qaLRWouh4TedmwYUw9tmlog5zvKnvG6zVpfi/XzBAtroqBLmTCUQWQ675y6owE1Eyo pFXkuLTRRmlkI/HVpiNJoJtGTdlIkmUiojGvvIXPQUDvjAmwg0EUCQPI/F18jDWMs6 JD7sVdq4pLRwsHbseacSTp85MkPNuFZxQO0EI+6znI+iGSkaICzqD81HVlaDQ3mjzi uqu/HbFQdD910eBoMfEotInmsl559jso9jtD6mTQcUSljBwSaJo6iemgK1dtlcrMaU XrEnGyzRGwlDA== 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 2529E37813A4; Thu, 4 Apr 2024 15:22:55 +0000 (UTC) From: Laura Nao To: tglx@linutronix.de Cc: kernel@collabora.com, laura.nao@collabora.com, linux-kernel@vger.kernel.org, regressions@leemhuis.info, regressions@lists.linux.dev, x86@kernel.org Subject: Re: [REGRESSION] mainline boot regression on AMD Stoney Ridge Chromebooks Date: Thu, 4 Apr 2024 17:23:17 +0200 Message-Id: <20240404152317.464796-1-laura.nao@collabora.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <874jchb7na.ffs@tglx> References: <874jchb7na.ffs@tglx> 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 Thomas, On 4/4/24 15:05, Thomas Gleixner wrote: > Laura! > > On Thu, Apr 04 2024 at 15:01, Thomas Gleixner wrote: >> On Thu, Apr 04 2024 at 10:24, Linux regression tracking wrote: >>> 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. > > Can you please provide a boot dmesg from a 6.8 kernel and the output of > 'cpuid' ? Sure, here's the output from an Acer Chromebook Spin 311 R721T device: - kernel log: https://pastebin.com/raw/NNbeJupE - cpuid output: https://pastebin.com/raw/ThmGqnqG This is with kernel v6.8 (e8f897f4afef0031fe618a8e94127a0934896aba), let me know if you need the output from a different revision. Thank you! Laura