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Subject: Re: [PATCH v2] xen/x86: Zero out .bss for PV guests
To: Brian Gerst <brgerst@gmail.com>
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From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
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Date: Wed, 24 Feb 2016 11:33:34 -0500
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On 02/24/2016 11:05 AM, Brian Gerst wrote:
>
> Use the macros in <asm/asm.h> instead of defining your own.  Also,
> xorl %eax,%eax is good for 64-bit too, since the upper bits are
> cleared.

I suspected this would have to be defined somewhere but couldn't find 
it. Thanks!

-boris