[PATCH 5.10.y 2/2] x86/resctrl: Add missing resctrl initialization for Hygon

[Sasha Levin <sashal@kernel.org>]

From: Xiaochen Shen <shenxiaochen@open-hieco.net>

[ Upstream commit 6ee98aabdc700b5705e4f1833e2edc82a826b53b ]

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
[ Adjust context ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/x86/kernel/cpu/resctrl/core.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c
index 32005e229c03c..7dae63a953abc 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -834,7 +834,8 @@ static __init bool get_mem_config(void)
 
 	if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)
 		return __get_mem_config_intel(&rdt_resources_all[RDT_RESOURCE_MBA]);
-	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(&rdt_resources_all[RDT_RESOURCE_MBA]);
 
 	return false;
@@ -960,7 +961,8 @@ 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();
 }
 
-- 
2.51.0