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* [PATCH 0/2] two atomic_cmpxchg() related fixes
@ 2020-06-16  4:50 Halil Pasic
  2020-06-16  4:50 ` [PATCH 1/2] virtio-ccw: fix virtio_set_ind_atomic Halil Pasic
                   ` (3 more replies)
  0 siblings, 4 replies; 22+ messages in thread
From: Halil Pasic @ 2020-06-16  4:50 UTC (permalink / raw)
  To: Matthew Rosato, Cornelia Huck, Christian Borntraeger,
	Michael S. Tsirkin, qemu-s390x, qemu-devel
  Cc: Halil Pasic, Thomas Huth, David Hildenbrand, Richard Henderson

The story short: compiler can generate code that does two
distinct fetches of *ind_addr for old and _old. If that happens we can
not figure out if we had the desired xchg or not.

Halil Pasic (2):
  virtio-ccw: fix virtio_set_ind_atomic
  s390x/pci: fix set_ind_atomic

 hw/s390x/s390-pci-bus.c | 16 +++++++++-------
 hw/s390x/virtio-ccw.c   | 18 ++++++++++--------
 2 files changed, 19 insertions(+), 15 deletions(-)


base-commit: 7d3660e79830a069f1848bb4fa1cdf8f666424fb
-- 
2.17.1



^ permalink raw reply	[flat|nested] 22+ messages in thread

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Thread overview: 22+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-06-16  4:50 [PATCH 0/2] two atomic_cmpxchg() related fixes Halil Pasic
2020-06-16  4:50 ` [PATCH 1/2] virtio-ccw: fix virtio_set_ind_atomic Halil Pasic
2020-06-16  5:58   ` Christian Borntraeger
2020-06-16  6:33     ` Cornelia Huck
2020-06-16  6:45       ` Christian Borntraeger
2020-06-19  7:14         ` Cornelia Huck
2020-06-17 23:56       ` Halil Pasic
2020-06-19  7:33         ` David Hildenbrand
2020-06-19  8:17           ` Halil Pasic
2020-06-16  9:31     ` Halil Pasic
2020-07-01 13:13   ` Christian Borntraeger
2020-07-04 18:34   ` Michael S. Tsirkin
2020-07-06  5:44     ` Christian Borntraeger
2020-07-06 11:19     ` Halil Pasic
2020-06-16  4:50 ` [PATCH 2/2] s390x/pci: fix set_ind_atomic Halil Pasic
2020-07-01 13:14   ` Christian Borntraeger
2020-07-01 12:01 ` [PATCH 0/2] two atomic_cmpxchg() related fixes Cornelia Huck
2020-07-01 12:06   ` Christian Borntraeger
2020-07-01 13:10     ` Cornelia Huck
2020-07-03 13:37     ` Halil Pasic
2020-07-03 14:03       ` Cornelia Huck
2020-07-02 11:18 ` Cornelia Huck

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