[Qemu-block] [PATCH 0/3] ahci: fix completion race condition

[John Snow]

Commit d759c951f changed the main thread lock release/reacquisition,
and in so doing apparently jostled loose a race condition in the AHCI
code.

Patch 2 should be sufficient to fix this, and patches 1 and 3 are just
little trivial fixes.

This might be sufficient to fix the bug as reported at
https://bugs.launchpad.net/qemu/+bug/1769189
but the nature of the timing changes make it difficult to confirm,
so I am posting this patchset for the reporters to help test.

John Snow (3):
  ahci: trim signatures on raise/lower
  ahci: fix PxCI register race
  ahci: don't schedule unnecessary BH

 hw/ide/ahci.c | 24 +++++++++++-------------
 1 file changed, 11 insertions(+), 13 deletions(-)

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2.14.3