From 253fb3902008353831525ab711909abdd5ee191f Mon Sep 17 00:00:00 2001 From: Robert Walsh Date: Thu, 15 Mar 2007 14:45:14 -0700 Subject: [PATCH] IB/ipath: Check reserved memory keys Don't let userspace use the direct-physical-map L_key or R_key. Signed-off-by: Ralph Campbell Signed-off-by: Roland Dreier --- drivers/infiniband/hw/ipath/ipath_keys.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/infiniband/hw/ipath/ipath_keys.c b/drivers/infiniband/hw/ipath/ipath_keys.c index c93fa2f7719c..dd487c100f5b 100644 --- a/drivers/infiniband/hw/ipath/ipath_keys.c +++ b/drivers/infiniband/hw/ipath/ipath_keys.c @@ -133,6 +133,12 @@ int ipath_lkey_ok(struct ipath_qp *qp, struct ipath_sge *isge, * being reversible by calling bus_to_virt(). */ if (sge->lkey == 0) { + struct ipath_pd *pd = to_ipd(qp->ibqp.pd); + + if (pd->user) { + ret = 0; + goto bail; + } isge->mr = NULL; isge->vaddr = (void *) sge->addr; isge->length = sge->length; @@ -206,6 +212,12 @@ int ipath_rkey_ok(struct ipath_qp *qp, struct ipath_sge_state *ss, * (see ipath_get_dma_mr and ipath_dma.c). */ if (rkey == 0) { + struct ipath_pd *pd = to_ipd(qp->ibqp.pd); + + if (pd->user) { + ret = 0; + goto bail; + } sge->mr = NULL; sge->vaddr = (void *) vaddr; sge->length = len; -- 2.34.1