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Commit 7a8b80eb authored by Steve Wise's avatar Steve Wise Committed by Trond Myklebust
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xprtrdma: Do not truncate iova_start values in frmr registrations. 



A bad cast causes the iova_start, which in this case is a 64b DMA
bus address, to be truncated on 32b systems.  This breaks frmrs on
32b systems.  No cast is needed.

Signed-off-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 5d7ca35a

net/sunrpc/xprtrdma/verbs.c

+1 −1
Original line number Diff line number Diff line
@@ -1490,7 +1490,7 @@ rpcrdma_register_frmr_external(struct rpcrdma_mr_seg *seg, 
	memset(&frmr_wr, 0, sizeof frmr_wr);

	frmr_wr.opcode = IB_WR_FAST_REG_MR;

	frmr_wr.send_flags = 0;			/* unsignaled */

	frmr_wr.wr.fast_reg.iova_start = (unsigned long)seg1->mr_dma;

	frmr_wr.wr.fast_reg.iova_start = seg1->mr_dma;

	frmr_wr.wr.fast_reg.page_list = seg1->mr_chunk.rl_mw->r.frmr.fr_pgl;

	frmr_wr.wr.fast_reg.page_list_len = i;

	frmr_wr.wr.fast_reg.page_shift = PAGE_SHIFT;