diff options
| author | Pu Wen <puwen@hygon.cn> | 2023-08-14 10:18:26 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-11-28 17:14:59 +0000 |
| commit | e22352ec91e29bcb2ac155d99786e8a236b60962 (patch) | |
| tree | 81c0057bc2036154bd95f3db528d25c5ee4761ed | |
| parent | 2d0463ee5add1523bc17153955374f6f5c4e77b7 (diff) | |
x86/cpu/hygon: Fix the CPU topology evaluation for real
commit ee545b94d39a00c93dc98b1dbcbcf731d2eadeb4 upstream.
Hygon processors with a model ID > 3 have CPUID leaf 0xB correctly
populated and don't need the fixed package ID shift workaround. The fixup
is also incorrect when running in a guest.
Fixes: e0ceeae708ce ("x86/CPU/hygon: Fix phys_proc_id calculation logic for multi-die processors")
Signed-off-by: Pu Wen <puwen@hygon.cn>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/tencent_594804A808BD93A4EBF50A994F228E3A7F07@qq.com
Link: https://lore.kernel.org/r/20230814085112.089607918@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/cpu/hygon.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/hygon.c b/arch/x86/kernel/cpu/hygon.c index 5a2962c492d3..046f88066c9b 100644 --- a/arch/x86/kernel/cpu/hygon.c +++ b/arch/x86/kernel/cpu/hygon.c @@ -86,8 +86,12 @@ static void hygon_get_topology(struct cpuinfo_x86 *c) if (!err) c->x86_coreid_bits = get_count_order(c->x86_max_cores); - /* Socket ID is ApicId[6] for these processors. */ - c->phys_proc_id = c->apicid >> APICID_SOCKET_ID_BIT; + /* + * Socket ID is ApicId[6] for the processors with model <= 0x3 + * when running on host. + */ + if (!boot_cpu_has(X86_FEATURE_HYPERVISOR) && c->x86_model <= 0x3) + c->phys_proc_id = c->apicid >> APICID_SOCKET_ID_BIT; cacheinfo_hygon_init_llc_id(c, cpu); } else if (cpu_has(c, X86_FEATURE_NODEID_MSR)) { |