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 5B2CD22E3F0; Wed, 4 Feb 2026 15:08:15 +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=1770217695; cv=none; b=hYBnMod2H18MzZtJPbzyOQUCdFcdASzX8whZjHJeFQAErRGeolHxFKG2DGmiEVfFtGTdi+FydYpyRjEWHvGM6pjVaEk1taigv6ulR6GafEf7nBcGfNFbW59t486iOvB2SDNqfctf7r1GJ1q/Yhm0PX8PEVwL0oW5oje5TWZ+cxc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770217695; c=relaxed/simple; bh=KWL1KqVl7e3EEF5YpFF4RFQLM1kvw/57qqG4P3FiWak=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pnK/jXJNwXQVo1Kl78Mk56SYsxuWBVf6s8tx3qhlMRSB6GHCGZ57icGijG7jbO5dZ6FxyhtvbdWi/qunajVAwcg//QS9UOOY/XLIk1fhio1E5kJt3QD1um0s4xV6w3fkTmQy87rERBxnEl3ZEzn+H8T71kNlNfNozwj2zO6/Jj4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=mtvn0BX2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="mtvn0BX2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DEAAFC4CEF7; Wed, 4 Feb 2026 15:08:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1770217695; bh=KWL1KqVl7e3EEF5YpFF4RFQLM1kvw/57qqG4P3FiWak=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mtvn0BX2Um2+CENIk+fV1MdpNfngIGeHSxewPuUv6cir3yvH3CHtxLbpAy+vAhDQ4 wnrkurxBxjrRJC/i4jJ45RYjwMfbJi7uA6s6H8RlZ7+w2dEhXiBlHC9W0RgF1dagVL 2MXuYJWHrljJlTjevmyWXNAQKY/u2evjgINmHfqs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Xiaochen Shen , "Borislav Petkov (AMD)" , Reinette Chatre Subject: [PATCH 6.1 057/280] x86/resctrl: Add missing resctrl initialization for Hygon Date: Wed, 4 Feb 2026 15:37:11 +0100 Message-ID: <20260204143911.704734226@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260204143909.614719725@linuxfoundation.org> References: <20260204143909.614719725@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Xiaochen Shen commit 6ee98aabdc700b5705e4f1833e2edc82a826b53b upstream. Hygon CPUs supporting Platform QoS features currently undergo partial resctrl initialization through resctrl_cpu_detect() in the Hygon BSP init helper and AMD/Hygon common initialization code. However, several critical data structures remain uninitialized for Hygon CPUs in the following paths: - get_mem_config()-> __rdt_get_mem_config_amd(): rdt_resource::membw,alloc_capable hw_res::num_closid - rdt_init_res_defs()->rdt_init_res_defs_amd(): rdt_resource::cache hw_res::msr_base,msr_update Add the missing AMD/Hygon common initialization to ensure proper Platform QoS functionality on Hygon CPUs. Fixes: d8df126349da ("x86/cpu/hygon: Add missing resctrl_cpu_detect() in bsp_init helper") Signed-off-by: Xiaochen Shen Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Reinette Chatre Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20251209062650.1536952-2-shenxiaochen@open-hieco.net Signed-off-by: Greg Kroah-Hartman --- arch/x86/kernel/cpu/resctrl/core.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -728,7 +728,8 @@ static __init bool get_mem_config(void) if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) return __get_mem_config_intel(&hw_res->r_resctrl); - else if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) + else if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD || + boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) return __rdt_get_mem_config_amd(&hw_res->r_resctrl); return false; @@ -863,7 +864,8 @@ static __init void rdt_init_res_defs(voi { if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) rdt_init_res_defs_intel(); - else if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) + else if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD || + boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) rdt_init_res_defs_amd(); }