>>> On 08.02.17 at 11:09, <sergey.dya...@citrix.com> wrote:
> Any fail during the original __vmwrite() leads to BUG() which can be
> easily exploited from a guest in the nested vmx mode.
> 
> The new function returns error code depending on the outcome:
> 
>           VMsucceed: 0
>         VMfailValid: VM Instruction Error Number
>       VMfailInvalid: a new VMX_INSN_FAIL_INVALID
> 
> A new macro GAS_VMX_OP is introduced in order to improve the
> readability of asm.  Existing ASM_FLAG_OUT macro is reused and copied
> into asm_defns.h
> 
> Signed-off-by: Sergey Dyasli <sergey.dya...@citrix.com>

Reviewed-by: Jan Beulich <jbeul...@suse.com>



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