From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 B7E6A30F941 for ; Tue, 4 Nov 2025 08:20:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762244442; cv=none; b=XvXXyltUkCZAsO3IH3V4GX5LV7iVKffctGK0Dik5qBblN3eEOLCJ37KmvnJFFW1nsSzCJb/IonEIGzhigWQesMOJiwXMxx+i1fmpdngLRY+GVGLdJP2wapZDDsBQbv8KCwhx8aOmrAMJ1nQZW+P3rKF1jLAy7/7ivNVy7IMqD9w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762244442; c=relaxed/simple; bh=mriUUgDpMI3rDeXfO9Fk+PqE+Ac5ru5SneErXbM3JHI=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=P2RV70zqhgCO6kgdS7C6VXkpqf9b1xv2i8vmRHIegNyB06Bhsa/HI4OnuyabBSKx/j41nDJxVpd3i+5XQUioLyFyLA76NawzIX6yfq6atBbEMevWz7bmv+gxC2AeF7uiyEVOISBw9LDFUmo8DO46HXWnCPnOrtOaA98cRbk5y5g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EJkd9JGt; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="EJkd9JGt" Received: by smtp.kernel.org (Postfix) with ESMTPS id 39BD7C4CEF8 for ; Tue, 4 Nov 2025 08:20:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762244442; bh=mriUUgDpMI3rDeXfO9Fk+PqE+Ac5ru5SneErXbM3JHI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=EJkd9JGtfAk6ZOaIhLQY+EQHdaFZJDHck1XNXoB4uqBcIG7cqzTYx3qjfnERBY/KV 3xJAf98OpiIKiCw/4QrE/uGK1Lrv0RuNfnTdfUKmEK5DvFN672F6c+ZWXwXiMos6nH d8QTOmlsodllachJQEe9tsljms4pk0Ld2GpFM+PIew9CVzfN3gqFZCPEnnWgvDCgxY ApwOzkxMzn/nRWT6zQGSmT3usfe6YLgv8OIpie3erCAfLPa4OdaXZYGHdrR9PXNQpG 9SKnR9l1YM3Ny4awDDwQjG8xPbc1iiee+65jnk4GGdvMYD8pYPzWFPjzVWx1e8clcA uinTF4PEV0tCA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 33777C53BC5; Tue, 4 Nov 2025 08:20:42 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 220715] [REGRESSION] AMD P-State fails with "_CPC object is not present" on AMD Zen 4 between 6.10 and 6.11 Date: Tue, 04 Nov 2025 08:20:41 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Power Management X-Bugzilla-Component: cpufreq X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: chris.harris79@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-pm@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D220715 --- Comment #18 from Chris Harris (chris.harris79@gmail.com) --- Thanks for your engagement Gautham. I tested the 'prefcore' patch you prov= ided on v6.17 and unfortunately it fails as well. dmesg attached. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=