Re: [Xen-devel] [PATCH v4 3/3] x86/vvmx: correctly emulate VMREAD

["Tian, Kevin" <kevin.tian@xxxxxxxxx>]

> From: Sergey Dyasli [mailto:sergey.dyasli@xxxxxxxxxx]
> Sent: Monday, February 13, 2017 10:21 PM
> 
> There is an issue with the original __vmread() in nested vmx mode:
> emulation of a guest's VMREAD with invalid arguments leads to BUG().
> 
> Fix this by using vmread_safe() and reporting any kind of VMfail back
> to the guest.
> 
> A new safe versions of get_vvmcs() macro and related functions are
> introduced because of new function signatures and lots of existing
> users.
> 
> Signed-off-by: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>

Acked-by: Kevin Tian <kevin.tian@xxxxxxxxx>

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