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

[Boris Ostrovsky]

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