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)
[-- Attachment #1.1: Type: text/plain, Size: 492 bytes --]
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
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]
[-- Attachment #2: Type: text/plain, Size: 127 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170420153523.GG4645@aepfle.de \
--to=olaf@aepfle.de \
--cc=andrew.cooper3@citrix.com \
--cc=xen-devel@lists.xen.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.