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

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From	David Vrabel <david.vrabel@citrix.com>
Newsgroups	linux.kernel
Subject	Re: [Xen-devel] [PATCH] xen/x86: Zero out .bss for PV guests
Date	Wed, 24 Feb 2016 15:20:02 +0100
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On 22/02/16 22:06, Boris Ostrovsky wrote:
> Baremetal kernels clear .bss early in the boot. Since Xen PV guests don't
> excecute that early code they should do it too.
> 
> (Since we introduce macros for specifying 32- and 64-bit registers we
> can get rid of ifdefs in startup_xen())

.bss must have been cleared for PV guests otherwise they would be
horribly broken.  What was the method and why is it no longer sufficient?

David

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Re: [Xen-devel] [PATCH] xen/x86: Zero out .bss for PV guests David Vrabel <david.vrabel@citrix.com> - 2016-02-24 15:20 +0100
  Re: [Xen-devel] [PATCH] xen/x86: Zero out .bss for PV guests Andrew Cooper <andrew.cooper3@citrix.com> - 2016-02-24 15:20 +0100
    Re: [Xen-devel] [PATCH] xen/x86: Zero out .bss for PV guests Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-24 16:00 +0100
      Re: [Xen-devel] [PATCH] xen/x86: Zero out .bss for PV guests David Vrabel <david.vrabel@citrix.com> - 2016-02-24 16:00 +0100
        Re: [Xen-devel] [PATCH] xen/x86: Zero out .bss for PV guests "Luis R. Rodriguez" <mcgrof@kernel.org> - 2016-02-24 17:30 +0100
          Re: [Xen-devel] [PATCH] xen/x86: Zero out .bss for PV guests Boris Ostrovsky <boris.ostrovsky@oracle.com> - 2016-02-24 17:50 +0100

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