From: Ian Jackson <ian.jackson@eu.citrix.com>
To: Anthony PERARD <anthony.perard@citrix.com>
Cc: qemu-devel@nongnu.org, Ross Lagerwall <ross.lagerwall@citrix.com>,
xen-devel@lists.xenproject.org, Juergen Gross <jgross@suse.com>,
Stefano Stabellini <sstabellini@kernel.org>
Subject: Re: [Qemu-devel] [PATCH 3/8] xen: defer call to xen_restrict until after os_setup_post
Date: Tue, 10 Oct 2017 18:16:06 +0100 [thread overview]
Message-ID: <23005.86.889060.625202@mariner.uk.xensource.com> (raw)
In-Reply-To: <20171010114001.GF1771@perard.uk.xensource.com>
Anthony PERARD writes ("Re: [PATCH 3/8] xen: defer call to xen_restrict until after os_setup_post"):
> I'm tring to find out what does calling xen_restrict_all(0), when
> running an non-Xen guest. I think it would just lock(), then unlock()
> then there should not be any handle to restrict, and return 0; is that
> right?
Yes. If the process has not opened any Xen control handles,
xentoolcore_restrict_all is a no-op.
Ian.
WARNING: multiple messages have this Message-ID (diff)
From: Ian Jackson <ian.jackson@eu.citrix.com>
To: Anthony PERARD <anthony.perard@citrix.com>
Cc: Juergen Gross <jgross@suse.com>,
Ross Lagerwall <ross.lagerwall@citrix.com>,
Stefano Stabellini <sstabellini@kernel.org>,
qemu-devel@nongnu.org, xen-devel@lists.xenproject.org
Subject: Re: [PATCH 3/8] xen: defer call to xen_restrict until after os_setup_post
Date: Tue, 10 Oct 2017 18:16:06 +0100 [thread overview]
Message-ID: <23005.86.889060.625202@mariner.uk.xensource.com> (raw)
In-Reply-To: <20171010114001.GF1771@perard.uk.xensource.com>
Anthony PERARD writes ("Re: [PATCH 3/8] xen: defer call to xen_restrict until after os_setup_post"):
> I'm tring to find out what does calling xen_restrict_all(0), when
> running an non-Xen guest. I think it would just lock(), then unlock()
> then there should not be any handle to restrict, and return 0; is that
> right?
Yes. If the process has not opened any Xen control handles,
xentoolcore_restrict_all is a no-op.
Ian.
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
next prev parent reply other threads:[~2017-10-10 22:52 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-04 16:18 [Qemu-devel] [PATCH v2 0/*] xen: xen-domid-restrict improvements Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-04 16:18 ` [Qemu-devel] [PATCH 1/8] xen: link against xentoolcore Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-04 16:18 ` [Qemu-devel] [PATCH 2/8] xen: restrict: use xentoolcore_restrict_all Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-04 16:18 ` [Qemu-devel] [PATCH 3/8] xen: defer call to xen_restrict until after os_setup_post Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-09 15:50 ` [Qemu-devel] " Anthony PERARD
2017-10-09 15:50 ` Anthony PERARD
2017-10-09 16:58 ` [Qemu-devel] " Ian Jackson
2017-10-09 16:58 ` Ian Jackson
2017-10-10 11:40 ` [Qemu-devel] " Anthony PERARD
2017-10-10 11:40 ` Anthony PERARD
2017-10-10 17:16 ` Ian Jackson [this message]
2017-10-10 17:16 ` Ian Jackson
2017-10-09 17:00 ` Ian Jackson
2017-10-04 16:18 ` [Qemu-devel] [PATCH 4/8] xen: destroy_hvm_domain: Move reason into a variable Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-04 16:18 ` [Qemu-devel] [PATCH 5/8] xen: move xc_interface compatibility fallback further up the file Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-04 16:18 ` [Qemu-devel] [PATCH 6/8] xen: destroy_hvm_domain: Try xendevicemodel_shutdown Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-04 16:18 ` [Qemu-devel] [PATCH 7/8] os-posix: Provide new -runasid option Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-06 12:47 ` [Qemu-devel] " Ross Lagerwall
2017-10-06 12:47 ` Ross Lagerwall
2017-10-06 14:24 ` [Qemu-devel] " Ian Jackson
2017-10-06 14:24 ` Ian Jackson
2017-10-06 14:39 ` Ian Jackson
2017-10-06 12:59 ` [Qemu-devel] " Peter Maydell
2017-10-06 12:59 ` Peter Maydell
2017-10-06 14:24 ` Ian Jackson
2017-10-06 14:24 ` Ian Jackson
2017-10-06 14:39 ` Ian Jackson
2017-10-09 5:46 ` Markus Armbruster
2017-10-09 5:46 ` Markus Armbruster
2017-10-09 15:05 ` Ian Jackson
2017-10-09 15:05 ` Ian Jackson
2017-10-09 15:24 ` Daniel P. Berrange
2017-10-09 15:24 ` Daniel P. Berrange
2017-10-09 16:52 ` Ian Jackson
2017-10-09 16:52 ` Ian Jackson
2017-10-09 16:59 ` Ian Jackson
2017-10-10 7:43 ` Markus Armbruster
2017-10-10 7:43 ` Markus Armbruster
2017-10-10 17:11 ` Ian Jackson
2017-10-10 17:11 ` Ian Jackson
2017-10-11 9:52 ` Ian Jackson
2017-10-09 15:14 ` Ian Jackson
2017-10-04 16:18 ` [Qemu-devel] [PATCH 8/8] RFC configure: do_compiler: Dump some extra info under bash Ian Jackson
2017-10-04 16:18 ` Ian Jackson
2017-10-06 12:58 ` [Qemu-devel] [PATCH v2 0/*] xen: xen-domid-restrict improvements Ross Lagerwall
2017-10-06 12:58 ` Ross Lagerwall
2017-10-06 13:19 ` [Qemu-devel] [Xen-devel] " Paul Durrant
2017-10-06 13:19 ` Paul Durrant
2017-10-10 13:40 ` [Qemu-devel] [Xen-devel] " Ross Lagerwall
2017-10-10 13:40 ` Ross Lagerwall
2017-10-10 17:21 ` [Qemu-devel] [Xen-devel] " Ian Jackson
2017-10-10 17:21 ` Ian Jackson
2017-10-06 14:17 ` [Qemu-devel] " Ian Jackson
2017-10-06 14:17 ` Ian Jackson
-- strict thread matches above, loose matches on Subject: below --
2017-10-04 15:53 [Qemu-devel] [PATCH v2 0/7] " Ian Jackson
2017-10-04 15:53 ` [Qemu-devel] [PATCH 3/8] xen: defer call to xen_restrict until after os_setup_post Ian Jackson
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=23005.86.889060.625202@mariner.uk.xensource.com \
--to=ian.jackson@eu.citrix.com \
--cc=anthony.perard@citrix.com \
--cc=jgross@suse.com \
--cc=qemu-devel@nongnu.org \
--cc=ross.lagerwall@citrix.com \
--cc=sstabellini@kernel.org \
--cc=xen-devel@lists.xenproject.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.