hw/rdma: Do not allocate memory for non-dma MR
There is no use in the memory allocated for non-dma MR. Delete the code that allocates it. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> Message-Id: <20180805153518.2983-8-yuval.shaia@oracle.com> Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
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@ -144,8 +144,6 @@ int rdma_rm_alloc_mr(RdmaDeviceResources *dev_res, uint32_t pd_handle,
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RdmaRmMR *mr;
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int ret = 0;
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RdmaRmPD *pd;
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void *addr;
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size_t length;
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pd = rdma_rm_get_pd(dev_res, pd_handle);
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if (!pd) {
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@ -158,40 +156,29 @@ int rdma_rm_alloc_mr(RdmaDeviceResources *dev_res, uint32_t pd_handle,
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pr_dbg("Failed to allocate obj in table\n");
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return -ENOMEM;
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}
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pr_dbg("mr_handle=%d\n", *mr_handle);
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if (!host_virt) {
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/* TODO: This is my guess but not so sure that this needs to be
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* done */
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length = TARGET_PAGE_SIZE;
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addr = g_malloc(length);
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} else {
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mr->virt = host_virt;
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pr_dbg("host_virt=0x%p\n", mr->virt);
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mr->length = guest_length;
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pr_dbg("host_virt=0x%p\n", host_virt);
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pr_dbg("guest_start=0x%" PRIx64 "\n", guest_start);
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pr_dbg("length=%zu\n", guest_length);
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if (host_virt) {
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mr->virt = host_virt;
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mr->start = guest_start;
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pr_dbg("guest_start=0x%" PRIx64 "\n", mr->start);
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mr->length = guest_length;
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length = mr->length;
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addr = mr->virt;
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}
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ret = rdma_backend_create_mr(&mr->backend_mr, &pd->backend_pd, addr, length,
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access_flags);
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ret = rdma_backend_create_mr(&mr->backend_mr, &pd->backend_pd, mr->virt,
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mr->length, access_flags);
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if (ret) {
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pr_dbg("Fail in rdma_backend_create_mr, err=%d\n", ret);
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ret = -EIO;
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goto out_dealloc_mr;
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}
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}
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if (!host_virt) {
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*lkey = mr->lkey = rdma_backend_mr_lkey(&mr->backend_mr);
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*rkey = mr->rkey = rdma_backend_mr_rkey(&mr->backend_mr);
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} else {
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/* We keep mr_handle in lkey so send and recv get get mr ptr */
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*lkey = *mr_handle;
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*rkey = -1;
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}
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mr->pd_handle = pd_handle;
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@ -214,7 +201,10 @@ void rdma_rm_dealloc_mr(RdmaDeviceResources *dev_res, uint32_t mr_handle)
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if (mr) {
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rdma_backend_destroy_mr(&mr->backend_mr);
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pr_dbg("start=0x%" PRIx64 "\n", mr->start);
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if (mr->start) {
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munmap(mr->virt, mr->length);
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}
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res_tbl_dealloc(&dev_res->mr_tbl, mr_handle);
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}
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}
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