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i386: keep hyperv_vendor string up-to-date

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When cpu->hyperv_vendor is not set manually we default to "Microsoft Hv"
and in 'hv_passthrough' mode we get the information from the host. This
information is stored in cpu->hyperv_vendor_id[] array but we don't update
cpu->hyperv_vendor string so e.g. QMP's query-cpu-model-expansion output
is incorrect.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20210422161130.652779-2-vkuznets@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Vitaly Kuznetsov 2021-04-22 18:11:12 +02:00 • committed by Eduardo Habkost
parent 40b3cc354a
commit 4519259a34
2 changed files with 14 additions and 10 deletions
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19
target/i386/cpu.c
View file

@ -6141,17 +6141,16 @@ static void x86_cpu_hyperv_realize(X86CPU *cpu)
/* Hyper-V vendor id */ /* Hyper-V vendor id */
if (!cpu->hyperv_vendor) { if (!cpu->hyperv_vendor) {
memcpy(cpu->hyperv_vendor_id, "Microsoft Hv", 12); object_property_set_str(OBJECT(cpu), "hv-vendor-id", "Microsoft Hv",
} else { &error_abort);
len = strlen(cpu->hyperv_vendor);
if (len > 12) {
warn_report("hv-vendor-id truncated to 12 characters");
len = 12;
}
memset(cpu->hyperv_vendor_id, 0, 12);
memcpy(cpu->hyperv_vendor_id, cpu->hyperv_vendor, len);
} }
len = strlen(cpu->hyperv_vendor);
if (len > 12) {
warn_report("hv-vendor-id truncated to 12 characters");
len = 12;
}
memset(cpu->hyperv_vendor_id, 0, 12);
memcpy(cpu->hyperv_vendor_id, cpu->hyperv_vendor, len);
/* 'Hv#1' interface identification*/ /* 'Hv#1' interface identification*/
cpu->hyperv_interface_id[0] = 0x31237648; cpu->hyperv_interface_id[0] = 0x31237648;

5
target/i386/kvm/kvm.c
View file

@ -1216,6 +1216,11 @@ static int hyperv_handle_properties(CPUState *cs,
cpu->hyperv_vendor_id[0] = c->ebx; cpu->hyperv_vendor_id[0] = c->ebx;
cpu->hyperv_vendor_id[1] = c->ecx; cpu->hyperv_vendor_id[1] = c->ecx;
cpu->hyperv_vendor_id[2] = c->edx; cpu->hyperv_vendor_id[2] = c->edx;
cpu->hyperv_vendor = g_realloc(cpu->hyperv_vendor,
sizeof(cpu->hyperv_vendor_id) + 1);
memcpy(cpu->hyperv_vendor, cpu->hyperv_vendor_id,
sizeof(cpu->hyperv_vendor_id));
cpu->hyperv_vendor[sizeof(cpu->hyperv_vendor_id)] = 0;
} }
c = cpuid_find_entry(cpuid, HV_CPUID_INTERFACE, 0); c = cpuid_find_entry(cpuid, HV_CPUID_INTERFACE, 0);