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x86/cpu/hygon: Fix the CPU topology evaluation for real

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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: e0ceeae708 ("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>
This commit is contained in:
Pu Wen 2023-08-14 10:18:26 +02:00 committed by Greg Kroah-Hartman
parent acbc12b0b3
commit 268d17ab63
1 changed files with 6 additions and 2 deletions
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6
arch/x86/kernel/cpu/hygon.c
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@ -88,7 +88,11 @@ 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. */
/*
* 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);