[Xen-devel] [PATCH v5 0/2] Containing AER unrecoverable errors

[Venu Busireddy <venu.busireddy@xxxxxxxxxx>]

This patch set is part of a set of patches that together allow containment
of unrecoverable AER errors from PCIe devices assigned to guests in
passthrough mode. The containment is achieved by forcibly removing the
erring PCIe device from the guest.

The original xen-pciback patch corresponding to this patch set is:
https://lists.xen.org/archives/html/xen-devel/2017-06/msg03274.html.
It will be reposted after this patch set is accepted.

Changes in v5:
  * v4 worked only in the case of guests created using 'xl' command.
    Enhanced the fix to work for guests created using libvirt too.

Changes in v4:
  * Made the following changes suggested by Wei Liu.
    - Combine multiple LIBXL_HAVE_* definitions into one.
    - Use libxl__calloc() instead of malloc().

Changes in v3:
  * Made the following changes suggested by Wei Liu.
    - Added LIBXL_HAVE macros to libxl.h.
    - Don't hard-code dom0's domid to 0. Instead, use libxl__get_domid().
    - Corrected comments.
  * Made the following changes based on comments from Ian Jackson.
    - Got rid of the global variable aer_watch.
    - Added documentation (comments in code) for the new API calls.
    - Removed the unnecessary writes to xenstore.

Changes in v2:
  - Instead of killing the guest and hiding the device, forcibly remove
    the device from the guest.

Venu Busireddy (2):
  libxl: Implement the handler to handle unrecoverable AER errors
  xl: Register the AER event handler that handles AER errors

 tools/libxl/libxl.h          |   7 +++
 tools/libxl/libxl_create.c   |  11 +++-
 tools/libxl/libxl_domain.c   |   1 +
 tools/libxl/libxl_event.h    |   7 +++
 tools/libxl/libxl_internal.h |   8 +++
 tools/libxl/libxl_pci.c      | 123 +++++++++++++++++++++++++++++++++++++++++++
 tools/xl/xl_vmcontrol.c      |  14 ++++-
 7 files changed, 168 insertions(+), 3 deletions(-)


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