pvcalls-front: 64-bit align flags
We are using test_and_* operations on the status and flag fields of struct sock_mapping. However, these functions require the operand to be 64-bit aligned on arm64. Currently, only status is 64-bit aligned. Make status and flags explicitly 64-bit aligned. Signed-off-by: Stefano Stabellini <stefano@aporeto.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com>
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@ -73,20 +73,25 @@ struct sock_mapping {
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wait_queue_head_t inflight_conn_req;
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} active;
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struct {
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/* Socket status */
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/*
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* Socket status, needs to be 64-bit aligned due to the
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* test_and_* functions which have this requirement on arm64.
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*/
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#define PVCALLS_STATUS_UNINITALIZED 0
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#define PVCALLS_STATUS_BIND 1
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#define PVCALLS_STATUS_LISTEN 2
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uint8_t status;
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uint8_t status __attribute__((aligned(8)));
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/*
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* Internal state-machine flags.
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* Only one accept operation can be inflight for a socket.
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* Only one poll operation can be inflight for a given socket.
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* flags needs to be 64-bit aligned due to the test_and_*
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* functions which have this requirement on arm64.
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*/
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#define PVCALLS_FLAG_ACCEPT_INFLIGHT 0
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#define PVCALLS_FLAG_POLL_INFLIGHT 1
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#define PVCALLS_FLAG_POLL_RET 2
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uint8_t flags;
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uint8_t flags __attribute__((aligned(8)));
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uint32_t inflight_req_id;
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struct sock_mapping *accept_map;
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wait_queue_head_t inflight_accept_req;
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