Intel CPUs starting with Haswell-E implement a new MSR called
MSR_CORE_THREAD_COUNT which exposes the number of threads and cores
inside of a package.
This MSR is used by XNU to populate internal data structures and not
implementing it prevents virtual machines with more than 1 vCPU from
booting if the emulated CPU generation is at least Haswell-E.
This patch propagates the existing hvf logic from patch
027ac0cb516
("target/i386/hvf: add rdmsr 35H MSR_CORE_THREAD_COUNT") to TCG.
Signed-off-by: Alexander Graf <agraf@csgraf.de>
Message-Id: <
20221004225643.65036-2-agraf@csgraf.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
case MSR_IA32_UCODE_REV:
val = x86_cpu->ucode_rev;
break;
+ case MSR_CORE_THREAD_COUNT: {
+ CPUState *cs = CPU(x86_cpu);
+ val = (cs->nr_threads * cs->nr_cores) | (cs->nr_cores << 16);
+ break;
+ }
default:
if ((uint32_t)env->regs[R_ECX] >= MSR_MC0_CTL
&& (uint32_t)env->regs[R_ECX] < MSR_MC0_CTL +