On Fri, Oct 12, 2012 at 04:04:18PM -0700, Ira Weiny wrote:
> > FWIW, I reflected on this once (I belive it was for the netlink
> > discussion).. Allowing for a device to be renamed creates a serious
> > problem for RDMA since there isn't a stable 'if-index' like way for
> > software to refer to it
On Thu, Oct 11, 2012 at 11:04:02PM +0200, Or Gerlitz wrote:
> On Thu, Oct 11, 2012 at 10:44 PM, Roland Dreier
> wrote:
>
> > No one has really ever tried to deal with the issue of userspace
> > RDMA on a cache-incoherent architecture. Basically if you try the
> > current stack, the in-kernel us
On Fri, 12 Oct 2012 16:43:32 -0600
Jason Gunthorpe wrote:
> On Thu, Oct 11, 2012 at 01:02:45PM +0200, Or Gerlitz wrote:
>
> > Thinking about this a bit, will it be possible to provide a udev
> > rulethat can dictate to the IB core what name / suffix digit to
> > assign for a device with certain
On Thu, Oct 11, 2012 at 01:02:45PM +0200, Or Gerlitz wrote:
> Thinking about this a bit, will it be possible to provide a udev
> rulethat can dictate to the IB core what name / suffix digit to
> assign for a device with certain BDF?
FWIW, I reflected on this once (I belive it was for the netlink
In the error path of registering memory, in case there is a failure when
trying to allocate a chunk from the memory pool, it will try to free the
same chunk, which will BUG.
Signed-off-by: Thadeu Lima de Souza Cascardo
---
drivers/infiniband/hw/cxgb4/mem.c |2 +-
1 files changed, 1 insertion
On Wed, 10 Oct 2012 10:28:50 -0400
Hal Rosenstock wrote:
> On 9/21/2012 6:02 PM, Ira Weiny wrote:
> >
> >
> > Signed-off-by: Ira Weiny
> > ---
> > src/ibdiag_sa.c | 30 +++---
> > 1 files changed, 27 insertions(+), 3 deletions(-)
> >
> > diff --git a/src/ibdiag_sa.c
Le vendredi 12 octobre 2012 à 11:12 +0200, Yann Droneaud a écrit :
> Hi,
>
> Le jeudi 11 octobre 2012 à 13:44 -0700, Roland Dreier a écrit :
> > On Thu, Oct 11, 2012 at 8:34 AM, Animesh K Trivedi1
> > wrote:
> > >
> > > During memory memory registration, userspace buffers also go through same
>
Hi,
Le jeudi 11 octobre 2012 à 13:44 -0700, Roland Dreier a écrit :
> On Thu, Oct 11, 2012 at 8:34 AM, Animesh K Trivedi1 wrote:
> >
> > During memory memory registration, userspace buffers also go through same
> > API calls (dma_map_sg_attrs(...)).
> > What I am confused about why no such synchr
On x86 hardware manages the cache coherency. As far as I understood, DMA
sync
operations are no-ops on x86. But the confusion arose when I realised that
there are
no arch specific userlibs. So essentially as Roland pointed out, on a non
cache
coherent architecture userspace applications will break.
