diff options
Diffstat (limited to 'target-i386/kvm.c')
| -rw-r--r-- | target-i386/kvm.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 010ac51563..64046cb69d 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -28,6 +28,7 @@ #include "exec/gdbstub.h" #include "qemu/host-utils.h" #include "qemu/config-file.h" +#include "qemu/error-report.h" #include "hw/i386/pc.h" #include "hw/i386/apic.h" #include "hw/i386/apic_internal.h" @@ -505,7 +506,18 @@ int kvm_arch_init_vcpu(CPUState *cs) if (hyperv_enabled(cpu)) { c = &cpuid_data.entries[cpuid_i++]; c->function = HYPERV_CPUID_VENDOR_AND_MAX_FUNCTIONS; - memcpy(signature, "Microsoft Hv", 12); + if (!cpu->hyperv_vendor_id) { + memcpy(signature, "Microsoft Hv", 12); + } else { + size_t len = strlen(cpu->hyperv_vendor_id); + + if (len > 12) { + error_report("hv-vendor-id truncated to 12 characters"); + len = 12; + } + memset(signature, 0, 12); + memcpy(signature, cpu->hyperv_vendor_id, len); + } c->eax = HYPERV_CPUID_MIN; c->ebx = signature[0]; c->ecx = signature[1]; |