Re: [kvm-unit-tests PATCH] x86: debug: use a constraint that doesn't allow a memory operand

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On Mon, Sep 9, 2019 at 2:00 PM Bill Wendling <morbo@xxxxxxxxxx> wrote:
>
> The "lea" instruction cannot load the effective address into a memory
> location. The "g" constraint allows a compiler to use a memory location.
> A compiler that uses a register destination does so only because one is
> available. Use a general register constraint to make sure it always uses
> a register.
>
> Signed-off-by: Bill Wendling <morbo@xxxxxxxxxx>
Reviewed-by: Jim Mattson <jmattson@xxxxxxxxxx>



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