diff options
| author |   Sonny Rao <sonnyrao@us.ibm.com> | 2010-08-20 04:10:19 +0000 |
|---|---|---|
| committer |   Roland Dreier <rolandd@cisco.com> | 2010-10-06 12:57:07 -0700 |
| commit | 625fbd3a36d836efaaee4b6d9c2fcd25e3654624 (patch) | |
| tree | b89d4762c1e6d5fbbfa83d447695a0f4ae969ce0 /drivers/infiniband/hw/ehca | |
| parent | Fix pktcdvd ioctl dev_minor range check (diff) | |
| download | linux-dev-625fbd3a36d836efaaee4b6d9c2fcd25e3654624.tar.xz linux-dev-625fbd3a36d836efaaee4b6d9c2fcd25e3654624.zip | |
IB/ehca: Fix driver on relocatable kernel
the eHCA driver registers a MR for all of kernel memory, but makes the
assumption that valid memory exists at KERNELBASE. This assumption
may not be true in the case of a relocatable kernel, so use KERNELBASE
+ PHYSICAL_START to get the true beginning of usable kernel memory.
cc: Joachim Fenkes <fenkes@de.ibm.com>
cc: Christoph Raisch <raisch@de.ibm.com>
cc: Hoan-Ham Hguyen <hnguyen@de.ibm.com>
Signed-off-by: Sonny Rao <sonnyrao@us.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/ehca')
| -rw-r--r-- | drivers/infiniband/hw/ehca/ehca_mrmw.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/ehca/ehca_mrmw.c b/drivers/infiniband/hw/ehca/ehca_mrmw.c index 53f4cd4fc19a..43cae84005f0 100644 --- a/drivers/infiniband/hw/ehca/ehca_mrmw.c +++ b/drivers/infiniband/hw/ehca/ehca_mrmw.c @@ -171,7 +171,7 @@ struct ib_mr *ehca_get_dma_mr(struct ib_pd *pd, int mr_access_flags) } ret = ehca_reg_maxmr(shca, e_maxmr, - (void *)ehca_map_vaddr((void *)KERNELBASE), + (void *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)), mr_access_flags, e_pd, &e_maxmr->ib.ib_mr.lkey, &e_maxmr->ib.ib_mr.rkey); @@ -1636,7 +1636,7 @@ int ehca_reg_internal_maxmr( /* register internal max-MR on HCA */ size_maxmr = ehca_mr_len; - iova_start = (u64 *)ehca_map_vaddr((void *)KERNELBASE); + iova_start = (u64 *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)); ib_pbuf.addr = 0; ib_pbuf.size = size_maxmr; num_kpages = NUM_CHUNKS(((u64)iova_start % PAGE_SIZE) + size_maxmr, @@ -2209,7 +2209,7 @@ int ehca_mr_is_maxmr(u64 size, { /* a MR is treated as max-MR only if it fits following: */ if ((size == ehca_mr_len) && - (iova_start == (void *)ehca_map_vaddr((void *)KERNELBASE))) { + (iova_start == (void *)ehca_map_vaddr((void *)(KERNELBASE + PHYSICAL_START)))) { ehca_gen_dbg("this is a max-MR"); return 1; } else |