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| author | Max Gurtovoy <maxg@mellanox.com> | 2020-07-31 15:38:22 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-08-05 11:08:41 -0400 |
| commit | 0ea9ee430e74b16c6b17e70757d1c26d8d140e1f (patch) | |
| tree | 6aa33641d8e365181f33587a1bc6419b8d855ebf /drivers/ata/pdc_adma.c | |
| parent | 6234f80574d7569444d8718355fa2838e92b158b (diff) | |
vdpasim: protect concurrent access to iommu iotlb
Iommu iotlb can be accessed by different cores for performing IO using
multiple virt queues. Add a spinlock to synchronize iotlb accesses.
This could be easily reproduced when using more than 1 pktgen threads
to inject traffic to vdpa simulator.
Fixes: 2c53d0f64c06f("vdpasim: vDPA device simulator")
Cc: stable@vger.kernel.org
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200731073822.13326-1-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/ata/pdc_adma.c')
0 files changed, 0 insertions, 0 deletions