From: Dario Faggioli <dario.faggioli@citrix.com>
To: Boris Ostrovsky <boris.ostrovsky@oracle.com>, xen-devel@lists.xen.org
Cc: sstabellini@kernel.org, wei.liu2@citrix.com,
George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com,
ian.jackson@eu.citrix.com, tim@xen.org, jbeulich@suse.com
Subject: Re: [PATCH v6 4/8] mm: Scrub memory from idle loop
Date: Mon, 7 Aug 2017 16:05:16 +0200 [thread overview]
Message-ID: <1502114716.18446.0.camel@citrix.com> (raw)
In-Reply-To: <1501866346-9774-5-git-send-email-boris.ostrovsky@oracle.com>
[-- Attachment #1.1: Type: text/plain, Size: 845 bytes --]
On Fri, 2017-08-04 at 13:05 -0400, Boris Ostrovsky wrote:
> Instead of scrubbing pages during guest destruction (from
> free_heap_pages()) do this opportunistically, from the idle loop.
>
> We might come to scrub_free_pages()from idle loop while another CPU
> uses mapcache override, resulting in a fault while trying to do
> __map_domain_page() in scrub_one_page(). To avoid this, make mapcache
> vcpu override a per-cpu variable.
>
> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
>
Reviewed-by: Dario Faggioli <dario.faggioli@citrix.com>
Regards,
Dario
--
<<This happens because I choose it to happen!>> (Raistlin Majere)
-----------------------------------------------------------------
Dario Faggioli, Ph.D, http://about.me/dario.faggioli
Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
[-- Attachment #1.2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 819 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 prev parent reply other threads:[~2017-08-07 14:05 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-04 17:05 [PATCH v6 0/8] Memory scrubbing from idle loop Boris Ostrovsky
2017-08-04 17:05 ` [PATCH v6 1/8] mm: Place unscrubbed pages at the end of pagelist Boris Ostrovsky
2017-08-06 17:41 ` Jan Beulich
2017-08-07 14:12 ` Boris Ostrovsky
2017-08-07 14:37 ` Jan Beulich
2017-08-07 14:55 ` Boris Ostrovsky
2017-08-07 15:28 ` Jan Beulich
2017-08-07 10:45 ` Julien Grall
2017-08-07 14:46 ` Boris Ostrovsky
2017-08-07 15:23 ` Julien Grall
2017-08-07 16:57 ` Boris Ostrovsky
2017-08-07 17:01 ` Julien Grall
2017-08-07 17:20 ` Boris Ostrovsky
2017-08-04 17:05 ` [PATCH v6 2/8] mm: Extract allocation loop from alloc_heap_pages() Boris Ostrovsky
2017-08-06 17:42 ` Jan Beulich
2017-08-04 17:05 ` [PATCH v6 3/8] mm: Scrub pages in alloc_heap_pages() if needed Boris Ostrovsky
2017-08-04 17:05 ` [PATCH v6 4/8] mm: Scrub memory from idle loop Boris Ostrovsky
2017-08-07 7:29 ` Jan Beulich
2017-08-07 14:05 ` Dario Faggioli [this message]
2017-08-04 17:05 ` [PATCH v6 5/8] spinlock: Introduce spin_lock_cb() Boris Ostrovsky
2017-08-07 7:32 ` Jan Beulich
2017-08-04 17:05 ` [PATCH v6 6/8] mm: Keep heap accessible to others while scrubbing Boris Ostrovsky
2017-08-07 7:50 ` Jan Beulich
2017-08-04 17:05 ` [PATCH v6 7/8] mm: Print number of unscrubbed pages in 'H' debug handler Boris Ostrovsky
2017-08-04 17:05 ` [PATCH v6 8/8] mm: Make sure pages are scrubbed Boris Ostrovsky
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=1502114716.18446.0.camel@citrix.com \
--to=dario.faggioli@citrix.com \
--cc=George.Dunlap@eu.citrix.com \
--cc=andrew.cooper3@citrix.com \
--cc=boris.ostrovsky@oracle.com \
--cc=ian.jackson@eu.citrix.com \
--cc=jbeulich@suse.com \
--cc=sstabellini@kernel.org \
--cc=tim@xen.org \
--cc=wei.liu2@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.