]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
x86/resctrl: Add missing resctrl initialization for Hygon
authorXiaochen Shen <shenxiaochen@open-hieco.net>
Tue, 9 Dec 2025 06:26:49 +0000 (14:26 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 30 Jan 2026 09:27:28 +0000 (10:27 +0100)
commita78dca14fb2b054d7b8b46bda1ea552bd1a88ffe
tree1f56c756f2cd14674ba026c46215e0a49f7953c4
parent71c5bc6720b60a7f81d461bfb34f39cb720091f1
x86/resctrl: Add missing resctrl initialization for Hygon

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 <shenxiaochen@open-hieco.net>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Reinette Chatre <reinette.chatre@intel.com>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20251209062650.1536952-2-shenxiaochen@open-hieco.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kernel/cpu/resctrl/core.c