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[Xen-devel] [PATCH 0/4] CPU hotplug port from qemu-traditionnal to qemu-xen for 4.3.

Hi all,

This series ports few patches from qemu-xen-traditionnal to qemu-xen
(upstream). There is as little modification as possible on those patches so
they *can not* be upstream as is. So this is only for 4.3. A proper series will
be done for 4.4.

There make possible to have CPU hotplug on qemu-xen.

A patch for libxl will follow, which make use of the old command line
-vcpu_avail with qemu-xen. This command line will probably not be upstream.

BUG: There is an issue with SeaBIOS (used with qemu-xen). At SMP
initialisation, SeaBIOS will count the number of CPU running, and the number is
always equal to maxvcpu when SeaBIOS expect less. This happen when we have
something like:
vcpus = 2
maxvcpus = 8
in the VM config file. Linux is fine with this and will use only $vcpus.  So
the probleme is: an infinit loop in SeaBIOS.


Ian Jackson (4):
  HVM vcpu add/remove: qemu logic for vcpu add/revmoe
  Fix vcpu hotplug bug: get correct vcpu_avail bitmap
  Update vcpu hotplug logic
  Implement 'xm vcpu-set' command for HVM guest

 hmp-commands.hx |  9 ++++++
 hw/acpi_piix4.c | 88 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
 monitor.c       | 18 ++++++++++++
 qemu-options.hx |  3 ++
 sysemu.h        |  4 +++
 vl.c            | 55 ++++++++++++++++++++++++++++++++++++
 xen-all.c       | 65 ++++++++++++++++++++++++++++++++++++++++++
 7 files changed, 241 insertions(+), 1 deletion(-)

Anthony PERARD

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