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prov/efa: avoid gdr_pin/gdr_map for dmabuf mrs #10445

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Oct 10, 2024
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prov/efa: avoid gdr_pin/gdr_map for dmabuf mrs #10445

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9 changes: 2 additions & 7 deletions prov/efa/src/efa_mr.c
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Original file line number Diff line number Diff line change
Expand Up @@ -184,12 +184,6 @@ static int efa_mr_hmem_setup(struct efa_mr *efa_mr,
{
int err;
struct iovec mr_iov = {0};

if (flags & FI_MR_DMABUF)
ofi_mr_get_iov_from_dmabuf(&mr_iov, attr->dmabuf, 1);
else
mr_iov = *attr->mr_iov;

efa_mr->peer.flags = flags;

if (attr->iface == FI_HMEM_SYSTEM) {
Expand Down Expand Up @@ -227,7 +221,8 @@ static int efa_mr_hmem_setup(struct efa_mr *efa_mr,
efa_mr->needs_sync = true;
efa_mr->peer.device.cuda = attr->device.cuda;

if (cuda_is_gdrcopy_enabled()) {
if (!(flags & FI_MR_DMABUF) && cuda_is_gdrcopy_enabled()) {
mr_iov = *attr->mr_iov;
err = ofi_hmem_dev_register(FI_HMEM_CUDA, mr_iov.iov_base, mr_iov.iov_len,
(uint64_t *)&efa_mr->peer.hmem_data);
efa_mr->peer.flags |= OFI_HMEM_DATA_DEV_REG_HANDLE;
Expand Down