Re: [Xen-devel] [PATCH v2] xen/x86: Zero out .bss for PV guests

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 02/24/2016 12:26 PM, Andrew Cooper wrote:
> On 24/02/16 15:19, Boris Ostrovsky wrote:
> > +       /* Clear .bss */
> > +       xor REG(ax),REG(ax)
> If we are nitpicking,
>
> This should be xor %eax, %eax even in 64bit.  Functionally identical,
> and shorter to encode.
Right, Brian Gerst pointed this out too in another message.

-boris


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