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i386: Expose module level in CPUID[0x1F]

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Linux kernel (from v6.4, with commit edc0a2b595765 ("x86/topology: Fix
erroneous smp_num_siblings on Intel Hybrid platforms") is able to
handle platforms with Module level enumerated via CPUID.1F.

Expose the module level in CPUID[0x1F] if the machine has more than 1
modules.

Tested-by: Yongwei Ma <yongwei.ma@intel.com>
Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Tested-by: Babu Moger <babu.moger@amd.com>
Message-ID: <20240424154929.1487382-15-zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Zhao Liu 2024-04-24 23:49:22 +08:00 • committed by Paolo Bonzini
parent 3568adc995
commit 5304873acd
4 changed files with 12 additions and 3 deletions
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6
include/hw/i386/topology.h
View file

@ -71,6 +71,7 @@ enum CPUTopoLevel {
CPU_TOPO_LEVEL_INVALID,
CPU_TOPO_LEVEL_SMT,
CPU_TOPO_LEVEL_CORE,
CPU_TOPO_LEVEL_MODULE,
CPU_TOPO_LEVEL_DIE,
CPU_TOPO_LEVEL_PACKAGE,
CPU_TOPO_LEVEL_MAX,
@ -198,11 +199,12 @@ static inline apic_id_t x86_apicid_from_cpu_idx(X86CPUTopoInfo *topo_info,
}
/*
* Check whether there's extended topology level (die)?
* Check whether there's extended topology level (module or die)?
*/
static inline bool x86_has_extended_topo(unsigned long *topo_bitmap)
{
return test_bit(CPU_TOPO_LEVEL_DIE, topo_bitmap);
return test_bit(CPU_TOPO_LEVEL_MODULE, topo_bitmap) ||
test_bit(CPU_TOPO_LEVEL_DIE, topo_bitmap);
}
#endif /* HW_I386_TOPOLOGY_H */