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authorSteve Wise <swise@opengridcomputing.com>2008-01-21 14:42:11 -0600
committerRoland Dreier <rolandd@cisco.com>2008-01-25 14:17:45 -0800
commitd08ca26ceec4dfbcfdbada4ad728db742ccaecd1 (patch)
tree15c79eb89ce17fcb2b96f1497e52c352d433b0ff
parentRDMA/cxgb3: Flush the receive queue when closing (diff)
downloadlinux-dev-d08ca26ceec4dfbcfdbada4ad728db742ccaecd1.tar.xz
linux-dev-d08ca26ceec4dfbcfdbada4ad728db742ccaecd1.zip
RDMA/cxgb3: Fix page shift calculation in build_phys_page_list()
The existing logic incorrectly maps this buffer list: 0: addr 0x10001000, size 0x1000 1: addr 0x10002000, size 0x1000 To this bogus page list: 0: 0x10000000 1: 0x10002000 The shift calculation must also take into account the address of the first entry masked by the page_mask as well as the last address+size rounded up to the next page size. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_mem.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/cxgb3/iwch_mem.c b/drivers/infiniband/hw/cxgb3/iwch_mem.c
index a6c2c4ba29e6..73bfd1656f86 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_mem.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_mem.c
@@ -122,6 +122,13 @@ int build_phys_page_list(struct ib_phys_buf *buffer_list,
*total_size += buffer_list[i].size;
if (i > 0)
mask |= buffer_list[i].addr;
+ else
+ mask |= buffer_list[i].addr & PAGE_MASK;
+ if (i != num_phys_buf - 1)
+ mask |= buffer_list[i].addr + buffer_list[i].size;
+ else
+ mask |= (buffer_list[i].addr + buffer_list[i].size +
+ PAGE_SIZE - 1) & PAGE_MASK;
}
if (*total_size > 0xFFFFFFFFULL)