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 6917C2C08AB for ; Wed, 13 May 2026 16:57:19 +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=1778691439; cv=none; b=ru3+k1eTw6+gtb98/z+TF4AIBPic7KU+VtGfRbzhpkUHKPDOsT+XKqqO4JTWwpw2LrU1AW3ToI1iB0TtoqkoO+i+iYY4BdrvU9cXACyLU53Ny8RV8OlQkqPDtBI+GSOLdT7sVypfVyBhDwiEcOoI8zZA3nEPZWg73x6Mr+BE24s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778691439; c=relaxed/simple; bh=Z/460bbf4X9Y2VACc8ZS8QDkBPS4FhvaeP+QjcALXyU=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=GG+suQa7m+ui7kg0zpBJQcZKk7wWzAAXid2ebYIK7eMvKb0KKPY1W3FYzK1j+pUGvzRfKVvGXaRINvYfDHX7UQ/0kbeFbycgdZVSSFPd+an2l6Y8Uhge34YpJLldguF+VCPL3yMJBNHdhBbskb68NsURSkIFwFYNmcogZiecMAo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ciCzEKOJ; 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="ciCzEKOJ" Received: by smtp.kernel.org (Postfix) with ESMTPS id 04496C2BCC6 for ; Wed, 13 May 2026 16:57:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778691439; bh=Z/460bbf4X9Y2VACc8ZS8QDkBPS4FhvaeP+QjcALXyU=; h=From:To:Subject:Date:In-Reply-To:References:From; b=ciCzEKOJoLoPZi/yybQt+HcpZrfrcukNR9af+q0BJ9ZCU8Zyh41s8G5Lp+CYU+iYb NiZ0muK4HHa7GlM3wGY4iTadeLB7ne3KZix901SK84TmSgl2o63/VMMY8gV4zyUc7S BNV1cUJkYlUtJKizP/FbOkm46eNhDC+JJ9GQolohjjmlkoRsk40lcs++Hj50Rhl2d1 b05F/YKd0MrNHqoTMNLrBKMiXEpO+3M6KlSPtk8mytT6ahouzvvqndgI0XdUVW9AeM iWqfJ/Htkr+WbMFUZYSKoXzftDgap04DC8fobfZsFDUU1pHnYuilYnARXa/8VaCLIG HxCfyI3WMrrjQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id E2AEAC433E1; Wed, 13 May 2026 16:57:18 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-pm@vger.kernel.org Subject: [Bug 221505] REGRESSION][amd_pstate] "EPP cannot be set under performance policy" (EBUSY) when switching to performance profile via PPD on 7.1 Date: Wed, 13 May 2026 16:57:18 +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: sergeyluashkov@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=3D221505 --- Comment #6 from Sergey (sergeyluashkov@gmail.com) --- (In reply to Mario Limonciello (AMD) from comment #5) > Yes - this is expected behavior with the series right now. I am proposing > to drop the kconfig and make the dynamic epp mode opt in at runtiem or > kernel command line. >=20 > https://lore.kernel.org/linux-pm/20260512221947.1652988-1-mario. > limonciello@amd.com/ I=E2=80=99ve tested the proposed patch on my Ryzen AI Max+ (Strix Halo) sys= tem (ASUS FA401EA), and here are the results: With amd_dynamic_epp=3Denable: The issue described in the Comment 4. With amd_dynamic_epp disabled (or no parameter): The issue described in the Description --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=