[Xen-devel] [PATCH 0/5] xen/domain: Cleanup to the domain_create() error paths

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

This is the start of a large amount of cleanup work to eventually allow for
the removal of XEN_DOMCTL_max_cpus hypercall.

The work to do is:

  1) Make the domain destruction path fully idempotent, and use instead of the
     ad-hoc cleanup in each of the various create functions.
  2) Do the same for the vcpu create/destroy path (which is in a far worse
     mess).

The arch-specific ARM code is all idempotent, but the common and x86 code has
a long way to go.

With this done, we should be able to cleanly unwind from any failure at any
point during domain creation, including when moving the vcpu allocation loop
into domain_create().

Andrew Cooper (5):
  xen/domain: Prepare data for is_{pv,hvm}_domain() as early as possible
  xen/domain: Break __domain_destroy() out of domain_create() and 
complete_domain_destroy()
  xen/domain: Call lock_profile_deregister_struct() from common code
  xen/domain: Fold xsm_free_security_domain() paths together
  xen/domain: Make rangeset_domain_destroy() idempotent

 xen/arch/x86/domain.c |  1 -
 xen/common/domain.c   | 62 +++++++++++++++++++++++++++++++--------------------
 xen/common/rangeset.c |  3 +++
 3 files changed, 41 insertions(+), 25 deletions(-)

-- 
2.1.4


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