* [Qemu-devel] did qemu-user mode support systemd
@ 2015-03-17 10:02 fupan
2015-03-17 13:50 ` Peter Maydell
0 siblings, 1 reply; 4+ messages in thread
From: fupan @ 2015-03-17 10:02 UTC (permalink / raw)
To: qemu-devel
Hi, All
Did the qemu user mode support the systemd, cause I
met the following error while start an arm lxc on x86-64:
qemu: Unsupported syscall: 355
Failed to allocate manager object: Function not implemented
Thanks!
Fupan
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] did qemu-user mode support systemd
2015-03-17 10:02 [Qemu-devel] did qemu-user mode support systemd fupan
@ 2015-03-17 13:50 ` Peter Maydell
2015-03-17 13:55 ` Daniel P. Berrange
0 siblings, 1 reply; 4+ messages in thread
From: Peter Maydell @ 2015-03-17 13:50 UTC (permalink / raw)
To: fupan; +Cc: QEMU Developers
On 17 March 2015 at 10:02, fupan <fupan.li@windriver.com> wrote:
> Did the qemu user mode support the systemd, cause I
> met the following error while start an arm lxc on x86-64:
>
> qemu: Unsupported syscall: 355
> Failed to allocate manager object: Function not implemented
355 is signalfd4, which we don't currently implement.
A well designed userspace program will gracefully fall
back to some other implementation if it tries a newer
syscall but it doesn't exist.
-- PMM
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] did qemu-user mode support systemd
2015-03-17 13:50 ` Peter Maydell
@ 2015-03-17 13:55 ` Daniel P. Berrange
2015-03-17 13:58 ` Peter Maydell
0 siblings, 1 reply; 4+ messages in thread
From: Daniel P. Berrange @ 2015-03-17 13:55 UTC (permalink / raw)
To: Peter Maydell; +Cc: fupan, QEMU Developers
On Tue, Mar 17, 2015 at 01:50:37PM +0000, Peter Maydell wrote:
> On 17 March 2015 at 10:02, fupan <fupan.li@windriver.com> wrote:
> > Did the qemu user mode support the systemd, cause I
> > met the following error while start an arm lxc on x86-64:
> >
> > qemu: Unsupported syscall: 355
> > Failed to allocate manager object: Function not implemented
>
> 355 is signalfd4, which we don't currently implement.
> A well designed userspace program will gracefully fall
> back to some other implementation if it tries a newer
> syscall but it doesn't exist.
systemd devs made an explicit decision to assume they have access to
the level of functionality provided in Linux >= 3.7. So if we want
QEMU user mode to support systemd, then at some point we'll need to
implement signalfd4 support.
Regards,
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Qemu-devel] did qemu-user mode support systemd
2015-03-17 13:55 ` Daniel P. Berrange
@ 2015-03-17 13:58 ` Peter Maydell
0 siblings, 0 replies; 4+ messages in thread
From: Peter Maydell @ 2015-03-17 13:58 UTC (permalink / raw)
To: Daniel P. Berrange; +Cc: fupan, QEMU Developers
On 17 March 2015 at 13:55, Daniel P. Berrange <berrange@redhat.com> wrote:
> On Tue, Mar 17, 2015 at 01:50:37PM +0000, Peter Maydell wrote:
>> 355 is signalfd4, which we don't currently implement.
>> A well designed userspace program will gracefully fall
>> back to some other implementation if it tries a newer
>> syscall but it doesn't exist.
>
> systemd devs made an explicit decision to assume they have access to
> the level of functionality provided in Linux >= 3.7. So if we want
> QEMU user mode to support systemd, then at some point we'll need to
> implement signalfd4 support.
Patches welcome :-)
-- PMM
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2015-03-17 13:58 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2015-03-17 10:02 [Qemu-devel] did qemu-user mode support systemd fupan
2015-03-17 13:50 ` Peter Maydell
2015-03-17 13:55 ` Daniel P. Berrange
2015-03-17 13:58 ` Peter Maydell
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).