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

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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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