With x2apic enabled, configurations can have more that 255 cores.
Noticed the device add test is hitting an assert when during cpu
hotplug with core_id > 255. This is due to assert check in the
CPUID 0x8000001E.
Remove the assert check and fix the problem.
Fixes the bug:
Link: https://bugzilla.redhat.com/show_bug.cgi?id=1834200
Signed-off-by: Babu Moger <babu.moger@amd.com>
Message-Id: <
160072824160.9666.
8890355282135970684.stgit@naples-babu.amd.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
}
break;
case 0x8000001E:
- assert(cpu->core_id <= 255);
- encode_topo_cpuid8000001e(cpu, &topo_info,
- eax, ebx, ecx, edx);
+ if (cpu->core_id <= 255) {
+ encode_topo_cpuid8000001e(cpu, &topo_info, eax, ebx, ecx, edx);
+ } else {
+ *eax = 0;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ }
break;
case 0xC0000000:
*eax = env->cpuid_xlevel2;