From: Melzzzzz@nospicedham.zzzzz.com   
      
   On 2020-08-09, aen@nospicedham.spamtrap.com    
   wrote:   
   > Hi!   
   >   
   > When I use   
   >   
   > mov       rax,123456789012   
   > vcvtsi2sd xmm0,xmm0,rax   
   >   
   > on the host system, and step through it in a debugger it works well,   
   > but when I do the same thing in virtualbox on a linux guest I get an   
   > illegal instruction.   
   >   
   > I thought the virtualbox code runs natively on the host cpu, so the   
   > instruction set should be the same.   
   >   
   > What's going on here?   
      
   Check support for AVX, perhaps your version of vbox does not support it?   
      
      
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