[Xen-devel] [PATCH v2 0/3] add hypercall option to temporarily pin a vcpu

[Juergen Gross <jgross@xxxxxxxx>]

Some hardware (e.g. Dell studio 1555 laptops) require SMIs to be
called on physical cpu 0 only. Linux drivers like dcdbas or i8k try
to achieve this by pinning the running thread to cpu 0, but in Dom0
this is not enough: the vcpu must be pinned to physical cpu 0 via
Xen, too.

This patch series adds a stable hypercall option to achieve this.

Changes in V2:
- add patch 1 to silence messages on suspend/resume
- add patch 3 to handle EBUSY case when removing cpu from cpupool
- limit operation to hardware domain as suggested by Jan Beulich
- some style issues corrected as requested by Jan Beulich
- use fixed width types in interface as requested by Jan Beulich
- add compat layer checking as requested by Jan Beulich


Juergen Gross (3):
  xen: silence affinity messages on suspend/resume
  xen: add hypercall option to temporarily pin a vcpu
  libxc: do some retries in xc_cpupool_removecpu() for EBUSY case

 tools/libxc/xc_cpupool.c     | 13 +++++-
 xen/common/compat/schedule.c |  4 ++
 xen/common/schedule.c        | 95 ++++++++++++++++++++++++++++++++++++++++----
 xen/include/public/sched.h   | 17 ++++++++
 xen/include/xlat.lst         |  1 +
 5 files changed, 122 insertions(+), 8 deletions(-)

-- 
2.6.2


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