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[v0.96] Fix bug where ebx returned 0 in apic.c when CPU max level >= 0xB but CPU does not support x2apic

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Dr-Noob
2021-04-06 16:56:26 +02:00
parent ec2ad4fef6
commit fe95ca3e10
1 changed files with 16 additions and 1 deletions
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17
src/x86/apic.c
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@@ -318,7 +318,22 @@ bool get_topology_from_apic(struct cpuInfo* cpu, struct topology* topo) {
uint32_t* apic_smt = malloc(sizeof(uint32_t) * topo->total_cores); uint32_t* apic_smt = malloc(sizeof(uint32_t) * topo->total_cores);
uint32_t** cache_smt_id_apic = malloc(sizeof(uint32_t*) * topo->total_cores); uint32_t** cache_smt_id_apic = malloc(sizeof(uint32_t*) * topo->total_cores);
uint32_t** cache_id_apic = malloc(sizeof(uint32_t*) * topo->total_cores); uint32_t** cache_id_apic = malloc(sizeof(uint32_t*) * topo->total_cores);
bool x2apic_id = cpu->maxLevels >= 0x0000000B; bool x2apic_id;
if(cpu->maxLevels >= 0x0000000B) {
uint32_t eax = 0;
uint32_t ebx = 0;
uint32_t ecx = 0;
uint32_t edx = 0;
cpuid(&eax, &ebx, &ecx, &edx);
if(ebx == 0) x2apic_id = false;
else x2apic_id = true;
}
else {
x2apic_id = false;
}
for(int i=0; i < topo->total_cores; i++) { for(int i=0; i < topo->total_cores; i++) {
cache_smt_id_apic[i] = malloc(sizeof(uint32_t) * (topo->cach->max_cache_level)); cache_smt_id_apic[i] = malloc(sizeof(uint32_t) * (topo->cach->max_cache_level));