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WHPX CPUID-0x40000000

From: Qi, Yadong
Subject: WHPX CPUID-0x40000000
Date: Thu, 8 Dec 2022 15:16:09 +0800
User-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.4.1 
Hi, all
May I know why the Hypervisor vendor signature value is cleared to 0 in whpx-all.c? 

https://gitlab.com/qemu-project/qemu/-/blob/master/target/i386/whpx/whpx-all.c#L1963
switch (cpuid_fn) {
case 0x40000000:
    /* Expose the vmware cpufrequency cpuid leaf */
    rax = 0x40000010;
    rbx = rcx = rdx = 0;
    break;


--
Best Regard
Yadong
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