diff options
| author |   Hoang-Nam Nguyen <hnguyen@de.ibm.com> | 2007-09-11 15:31:06 +0200 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2007-10-09 19:59:09 -0700 |
| commit | e390d3b52f791fcea26312ba4982cda82052727b (patch) | |
| tree | 399af315b321e57c88cca886cd3a69c05360891b /drivers/infiniband/hw/ehca/ehca_qp.c | |
| parent | IB/ehca: Support more than 4k QPs for userspace and kernelspace (diff) | |
| download | linux-dev-e390d3b52f791fcea26312ba4982cda82052727b.tar.xz linux-dev-e390d3b52f791fcea26312ba4982cda82052727b.zip | |
IB/ehca: Use remap_4k_pfn() to map firmware contexts to user space
Use Paul's new remap_4k_pfn() function to map our 4K firmware contexts
into user space on 64K-page machines without exposing neighboring
firmware contexts. Return the context's offset within a 64K page to
user space so it can determine the proper virtual address.
For details about remap_4k_pfn(), see commit 721151d0 or
http://patchwork.ozlabs.org/linuxppc/patch?id=10281
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca/ehca_qp.c')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_qp.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c index bfae1c228b2f..e89fdca7fa19 100644 --- a/drivers/infiniband/hw/ehca/ehca_qp.c +++ b/drivers/infiniband/hw/ehca/ehca_qp.c @@ -749,6 +749,8 @@ static struct ehca_qp *internal_create_qp( queue2resp(&resp.ipz_squeue, &my_qp->ipz_squeue); if (HAS_RQ(my_qp)) queue2resp(&resp.ipz_rqueue, &my_qp->ipz_rqueue); + resp.fw_handle_ofs = (u32) + (my_qp->galpas.user.fw_handle & (PAGE_SIZE - 1)); if (ib_copy_to_udata(udata, &resp, sizeof resp)) { ehca_err(pd->device, "Copy to udata failed"); |