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| author | Xiaochen Shen <shenxiaochen@open-hieco.net> | 2025-12-09 14:26:49 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-01-23 11:21:29 +0100 |
| commit | 1144298c1008963dd95b019ece25dce4fe4e3ffd (patch) | |
| tree | 5472652603ac485c5b0cecb9f8b2ec4bf92e6da3 | |
| parent | 0b4c0fbbe00b7de76bdaea7fa771017d7a979b0d (diff) | |
| download | linux-1144298c1008963dd95b019ece25dce4fe4e3ffd.tar.gz linux-1144298c1008963dd95b019ece25dce4fe4e3ffd.tar.bz2 linux-1144298c1008963dd95b019ece25dce4fe4e3ffd.zip | |
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>
| -rw-r--r-- | arch/x86/kernel/cpu/resctrl/core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c index 06ca5a30140c..c0dfbb31394e 100644 --- a/arch/x86/kernel/cpu/resctrl/core.c +++ b/arch/x86/kernel/cpu/resctrl/core.c @@ -818,7 +818,8 @@ 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; @@ -978,7 +979,8 @@ static __init void rdt_init_res_defs(void) { 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(); } |