Re: [Qemu-devel] [PATCH] VMRUN should store the RIP after the instruction

[Alexander Graf]

On Jun 4, 2008, at 6:13 PM, Anthony Liguori wrote:

> Alexander Graf wrote:
> > VMRUN stores the IP which is used to return to the instruction  
> > after the VMRUN in case of a VMEXIT. Due to recent changes, this  
> > does not happen anymore and a VMEXIT simply returns to the VMRUN  
> > instruction.
> >
> > Alex
>
> The open-coded  + 3 bothers me.  Are there any circumstances that a  
> prefix could be used with vmrun that would change the instruction  
> length?  vmrun doesn't appear to be affected by prefixes but I don't  
> see anything in the AMD manual specifically forbidding it.

This is true and it bothers me as well. I am open to suggestions how  
to receive the IP after the instruction that is about to be executed.  
Probably this could be done in translate.c?

Alex