[PATCH 0/3] Change XEN_DOMCTL_setvcpuaffinity interface

[Juergen Gross <jgross@xxxxxxxx>]

Today the XEN_DOMCTL_setvcpuaffinity hypercall will not only change the
affinity settings of a vcpu, it will return the new effective settings,
too.

In case an error happens during this hypercall, the expectation of the
caller is that the affinity of the vcpu didn't change. This isn't true,
however, if passing the new effective affinity back to the user is
failing.

Instead of making error handling in the hypervisor even more complex,
just change the interface by NOT passing back the new affinity. It can
easily be obtained by another XEN_DOMCTL_getvcpuaffinity call if
needed.

Juergen Gross (3):
  tools/libxl: don't rely on xc_vcpu_setaffinity() returned cpumaps
  xen: don't let XEN_DOMCTL_setvcpuaffinity return the new affinities
  tools/libxenctrl: rename parameters of xc_vcpu_setaffinity()

 tools/include/xenctrl.h        | 26 +++++-----------------
 tools/libs/ctrl/xc_domain.c    | 26 ++++++++++------------
 tools/libs/light/libxl_sched.c |  9 ++++++++
 xen/common/sched/core.c        | 40 ++++++++--------------------------
 xen/include/public/domctl.h    |  9 ++------
 5 files changed, 38 insertions(+), 72 deletions(-)

-- 
2.54.0