Re: [Xen-devel] [edk2] çå: Windows 2008 r2 smp guest booting hang with viridian=true on ovmf(xen latest version 4.5.1-rc1 + latest edk2)

[Laszlo Ersek <lersek@xxxxxxxxxx>]

On 05/20/15 09:24, Fanhenglong wrote:
> Can anyone have idea about how to boot window 2008 r2 smp guest in ovmf
> with viridian flag is true?

I had to confirm first that "viridian" means "Hyper-V",
<http://en.wikipedia.org/wiki/Hyper-V>:

  "Hyper-V, codenamed Viridian, ..."

With that out of the way, I can refer you to

  https://bugzilla.redhat.com/show_bug.cgi?id=1185253

Short version: don't set the "viridian flag"; the guest you're trying to
run like that was never meant to be run on Hyper-V.

Thanks
Laszlo

> *åää:*Fanhenglong
> *åéæé:*2015å5æ19æ23:22
> *æää:*xen-devel@xxxxxxxxxxxxx
> *æé:*'keir@xxxxxxx'; 'paul.durrant@xxxxxxxxxx'; 'jbeulich@xxxxxxxx';
> edk2-devel@xxxxxxxxxxxxxxxxxxxxx; Hanweidong (Randy); Liuqiming (John);
> Liuqiming (John)
> *äé:*Windows 2008 r2 smp guest booting hang with viridian=true on
> ovmf(xen latest version 4.5.1-rc1 + latest edk2)
> 
>  
> 
> Hi all,
> 
>    
> 
> I have test win2008 r2 guest on ovmf with xen latest version + edk2 latest
> 
> Xen : 4.5.1-rc1
> <http://xenbits.xen.org/gitweb/?p=xen.git;a=commit;h=0c4e0ef608c98abef6220b0b027d9ce8ec65fd5f>
> 
> Edk2 :  e2ab3f819f4e8165c24bd6f4fdc24ef17bdf458b (date:2015/5/18)
> 
> and come across a problem:
> 
> when the viridian flag is true,win2008 r2 guest can boot success with
> unique processor, but will hang with smp processor on ovmf;
> 
> the viridian flag is false, win2008 r2 guest can boot success both in
> unique and smp processor on ovmf;
> 
>  
> 
> if win2008 r2 with viridian=faulse, it may bring 0x101 bluescreen
> 
> http://old-list-archives.xenproject.org/archives/html/xen-users/2009-07/msg00661.html
> 
>  
> 
>     I try to resolve the problem,
> 
> I also run the same testcase on kvm and vmvare ,vm also have the same
> question, vmare is ok;
> 
> so I print the cupid function return value in vmvare guest os,
> 
> the below table show the detailed information in vmvare guest os,
> 
> get cpu id 0 : 0000000b 756e6547 6c65746e 49656e69
> 
> get cpu id 1 : 000106a5 00010800 80982201 0fabfbff
> 
> get cpu id 2 : 55035a01 00f0b2e4 00000000 09ca212c
> 
> get cpu id 3 : 00000000 00000000 00000000 00000000
> 
> get cpu id 4 : 00000000 00000000 00000000 00000000
> 
> get cpu id 5 : 00000000 00000000 00000000 00000000
> 
> get cpu id 40000000 : 40000010 61774d56 4d566572 65726177
> 
> get cpu id 40000001 : 00000000 00000000 00000000 00000000
> 
> get cpu id 40000002 : 00000000 00000000 00000000 00000000
> 
> get cpu id 40000003 : 00000000 00000000 00000000 00000000
> 
> get cpu id 40000004 : 00000000 00000000 00000000 00000000
> 
> get cpu id 40000005 : 00000000 00000000 00000000 00000000
> 
> get cpu id 40000006 : 00000000 00000000 00000000 00000000
> 
> get cpu id 40000070 : 00000000 00000000 000000ac 00000012
> 
> get cpu id 40000071 : 00000000 00000000 000000ac 00000012
> 
> get cpu id 40000072 : 00000000 00000000 000000ac 00000012
> 
> get cpu id 40000073 : 00000000 00000000 000000ac 00000012
> 
> get cpu id 40000100 : 00000000 00000000 000000ac 00000000
> 
> get cpu id 40000101 : 00000000 00000000 000000ac 00000000
> 
> get cpu id 40000102 : 00000000 00000000 000000ac 00000000
> 
> get cpu id 40000103 : 00000000 00000000 000000ac 00000000
> 
> get cpu id 40000104 : 00000000 00000000 000000ac 00000000
> 
> get cpu id 40000105 : 00000000 00000000 000000ac 00000000
> 
> get cpu id 40000106 : 00000000 00000000 000000ac 00000000
> 
> get cpu id 80000000 : 80000008 00000000 00000000 00000000
> 
> get cpu id 80000001 : 00000000 00000000 00000001 28100000
> 
> get cpu id 80000002 : 65746e49 2952286c 6f655820 2952286e
> 
> get cpu id 80000003 : 55504320 20202020 20202020 45202020
> 
> get cpu id 80000004 : 30323535 20402020 37322e32 007a4847
> 
> get cpu id 80000005 : 00000000 00000000 00000000 00000000
> 
> get cpu id 80000006 : 00000000 00000000 01006040 00000000
> 
> get cpu id 80000007 : 00000000 00000000 00000000 00000100
> 
> get cpu id 80000008 : 00003028 00000000 00000000 00000000
> 
> get cpu id 80000009 : 00000000 00000000 000000ac 00000000
> 
>  
> 
>  
> 
> I modified cpuid_viridian_leaves function in 
> xen/arch/x86/hvm/viridian.c (as the following red bold code)
> 
>     to return value 0 for cupid (function=40000001), and win2008 r2 smp
> guest can boot success on ovmf;
> 
>  
> 
> int cpuid_viridian_leaves(unsigned int leaf, unsigned int *eax,
> 
>                           unsigned int *ebx, unsigned int *ecx,
> 
>                           unsigned int *edx)
> 
> {
> 
>     struct domain *d = current->domain;
> 
>  
> 
>     if ( !is_viridian_domain(d) )
> 
>         return 0;
> 
>  
> 
>     leaf -= 0x40000000;
> 
>     if ( leaf > 6 )
> 
>         return 0;
> 
>  
> 
>     *eax = *ebx = *ecx = *edx = 0;
> 
>     switch ( leaf )
> 
>     {
> 
>     case 0:
> 
>         *eax = 0x40000006; /* Maximum leaf */
> 
>         *ebx = 0x7263694d; /* Magic numbers  */
> 
>         *ecx = 0x666F736F;
> 
>         *edx = 0x76482074;
> 
>         break;
> 
>     case 1:
> 
>         //original code **eax = 0x31237648; /* Version number */*
> 
> *       *eax = 0; //code after modified*
> 
>         break;
> 
>  
> 
>   
> 
>    based on hyperv spec, Microsoft Hypervisor CPUID Leaves,
> 
>    0x40000001
> 
> Hypervisor vendor-neutral interface identification. This determines the
> semantics of the leaves from 0x40000002 through 0x400000FF.
> 
>          EAX  0x31237648ââHv#1â
> 
>          EBX  Reserved
> 
>          ECX  Reserved
> 
>          EDX  Reserved
> 
>  
> 
> May be in xen platform,  if window 2008 r2 guest os boot in ovmf, the
> cupid(function=0x40000001) must not return EAX         0x31237648ââHv#1â,
> 
>  
> 
> Can anyone have idea about how to boot window 2008 r2 guest in ovmf and
> do not bring other problem(eg,0x101 bluescreen)?
> 
>  
> 
> Thanks!
> 
>   
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> 
> 
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