xen/x86: Zero out .bss for PV guests
authorBoris Ostrovsky <boris.ostrovsky@oracle.com>
Fri, 26 Feb 2016 19:02:36 +0000 (14:02 -0500)
committerDavid Vrabel <david.vrabel@citrix.com>
Thu, 3 Mar 2016 16:20:09 +0000 (16:20 +0000)
commit04b6b4a56884327c1648c517f1f46a2638f04c9d
treedc96b84e9f78a1b50a3e616a748246ef9f3f5cb8
parenta4d7b75be034115d36b6a20db566eb8b11bacaf8
xen/x86: Zero out .bss for PV guests

ELF spec is unclear about whether .bss must me cleared by the loader.
Currently the domain builder does it when loading the guest but because
it is not (or rather may not be) guaranteed we should zero it out
explicitly.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
arch/x86/xen/xen-head.S