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[0/3] spapr/pci: Improve MSI tracking

Message ID 156415227297.1064338.9181963275184520284.stgit@bahia.lan (mailing list archive)
Headers show
Series spapr/pci: Improve MSI tracking | expand

Message

Greg Kurz July 26, 2019, 2:44 p.m. UTC 
Some recent tests with AIX guests showed that we don't tear down
MSIs that were allocated with the "change-msi" RTAS call, when
the guest is rebooted. This series teach PHBs to do the cleanup
at reset time.

This bug has always been there. Not sure it is worth the pain to
have this fixed in 4.1.

--
Greg

---

Greg Kurz (3):
      spapr/pci: Consolidate de-allocation of MSIs
      spapr/pci: Free MSIs during reset
      spapr/irq: Drop spapr_irq_msi_reset()


 hw/ppc/spapr.c             |    4 ----
 hw/ppc/spapr_irq.c         |    7 ++-----
 hw/ppc/spapr_pci.c         |   26 +++++++++++++++++---------
 include/hw/ppc/spapr_irq.h |    1 -
 4 files changed, 19 insertions(+), 19 deletions(-)

Comments

David Gibson July 28, 2019, 1:51 a.m. UTC | #1 
On Fri, Jul 26, 2019 at 04:44:33PM +0200, Greg Kurz wrote:
> Some recent tests with AIX guests showed that we don't tear down
> MSIs that were allocated with the "change-msi" RTAS call, when
> the guest is rebooted. This series teach PHBs to do the cleanup
> at reset time.
> 
> This bug has always been there. Not sure it is worth the pain to
> have this fixed in 4.1.

Since we've only recently started looking at AIX as a supported guest,
and these bugs don't appear to break Linux guests, no, I don't think
it is.