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hw/rdma: Protect against concurrent execution of poll_cq

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The function rdma_poll_cq is called from two contexts - completion
handler thread which sense new completion on backend channel and
explicitly as result of guest issuing poll_cq command.

Add lock to protect against concurrent executions.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Message-Id: <1552300155-25216-4-git-send-email-yuval.shaia@oracle.com>
Reviewed-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
This commit is contained in:
Yuval Shaia 2019-03-11 03:29:07 -07:00 • committed by Marcel Apfelbaum
parent b20fc79510
commit 2cfa953009
3 changed files with 7 additions and 0 deletions
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hw/rdma/rdma_rm_defs.h
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@ -105,6 +105,7 @@ typedef struct RdmaDeviceResources {
RdmaRmResTbl cq_tbl;
RdmaRmResTbl cqe_ctx_tbl;
GHashTable *qp_hash; /* Keeps mapping between real and emulated */
QemuMutex lock;
} RdmaDeviceResources;
#endif