From: Olaf Hering <olaf@aepfle.de>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: xen-devel@lists.xen.org
Subject: superpages lost after migration of HVM domU
Date: Thu, 20 Apr 2017 17:35:23 +0200 [thread overview]
Message-ID: <20170420153523.GG4645@aepfle.de> (raw)
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Andrew,
with eab806a097b ("tools/libxc: x86 PV restore code") the only call of
xc_domain_populate_physmap_exact was added to the new restore code.
This call always sets order=0. The old migration code did consider
superpages, the new one does not.
What is the reason for not using superpages when populating a HVM domU?
I supposed the first iteration would allocate all of the required memory
for a domU, perhaps as superpages. ~ollowing iterations would just refill
existing pages.
Olaf
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next reply other threads:[~2017-04-20 15:35 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-20 15:35 Olaf Hering [this message]
2017-04-20 15:53 ` superpages lost after migration of HVM domU Andrew Cooper
2017-04-20 16:04 ` Olaf Hering
2017-04-20 16:31 ` Jan Beulich
2017-04-26 15:43 ` Olaf Hering
2017-04-26 15:52 ` Andrew Cooper
2017-04-28 10:15 ` Olaf Hering
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