From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: anthony.perard@citrix.com, xen-devel@lists.xenproject.org
Cc: stefano.stabellini@eu.citrix.com
Subject: xl vcpu-set <guest> <nr> does not work properly.
Date: Wed, 4 Dec 2013 14:57:24 -0500 [thread overview]
Message-ID: <20131204195723.GB3833@pegasus.dumpdata.com> (raw)
When I try this with the "SeaBIOS" QEMU it does not hotplug
all of the CPUs and it complains about the existing ones:
-bash-4.1# xl vcpu-list
Name ID VCPU CPU State Time(s) CPU
Affinity
Domain-0 0 0 1 -b- 87.1 any
cpu
Domain-0 0 1 2 -b- 14.4 any
cpu
Domain-0 0 2 3 -b- 11.0 any
cpu
Domain-0 0 3 0 r-- 13.7 any
cpu
latest 7 0 3 -b- 10.9 any
cpu
latest 7 1 0 -b- 1.7 any
cpu
latest 7 2 - --p 0.0 any
cpu
latest 7 3 - --p 0.0 any
cpu
-bash-4.1# xl vcpu-set 7 4
libxl: error: libxl_qmp.c:287:qmp_handle_error_response: received an
error message from QMP server: Unable to add CPU: 0, it already exists
libxl: error: libxl_qmp.c:287:qmp_handle_error_response: received an
error message from QMP server: Unable to add CPU: 1, it already exists
-bash-4.1# xl vcpu-list
Name ID VCPU CPU State Time(s) CPU
Affinity
Domain-0 0 0 0 -b- 87.4 any
cpu
Domain-0 0 1 3 -b- 14.6 any
cpu
Domain-0 0 2 2 -b- 11.1 any
cpu
Domain-0 0 3 1 r-- 13.7 any
cpu
latest 7 0 2 -b- 11.7 any
cpu
latest 7 1 1 -b- 1.7 any
cpu
latest 7 2 3 -b- 0.0 any
cpu
And sure enough - in the guest it only added one CPU:
[ 85.720139] CPU2 has been hot-added
[ 85.726409] installing Xen timer for CPU 2
[ 85.735674] smpboot: Booting Node 0 Processor 2 APIC 0x4
[ 85.755080] cpu 2 spinlock event irq 86
[ 85.763671] microcode: CPU2 sig=0x206a7, pf=0x2, revision=0x28
[ 85.770669] Will online and init hotplugged CPU: 2
Perhaps the SeaBIOS/new qemu needs variants of:
f62079c piix4acpi, xen, hotplug: Fix race with ACPI AML code and hotplug.
e28e062 piix4acpi, xen: Clarify that the qemu_set_irq calls just do an IRQ pulse.
2133c38 piix4acpi, xen, vcpu hotplug: Split the notification from the changes
Thanks!
next reply other threads:[~2013-12-04 19:58 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-04 19:57 Konrad Rzeszutek Wilk [this message]
2013-12-05 12:27 ` xl vcpu-set <guest> <nr> does not work properly Anthony PERARD
2013-12-09 17:10 ` Anthony PERARD
2013-12-09 17:20 ` Ian Campbell
2013-12-09 21:52 ` Konrad Rzeszutek Wilk
2013-12-10 14:46 ` Anthony PERARD
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=20131204195723.GB3833@pegasus.dumpdata.com \
--to=konrad.wilk@oracle.com \
--cc=anthony.perard@citrix.com \
--cc=stefano.stabellini@eu.citrix.com \
--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.