Thanks for replying, I still have some confusions :
On 4/11/06, Dror Goldenberg <[EMAIL PROTECTED]> wrote:
Still if some provider dose not emulate FMR using regular MR then, SDP will work?
In short I wanted to know that at driver level whatever address is reaching in ib_sge.addr is a physical address? page locking and virtual to physical address translation is taken care by SDP module?
>From: Devesh Sharma
>Sent: Monday, April 10, 2006 4:48 PM
>
>a) What is the concept of FMR?
>
Fast memory registration. It is an optimization of the HCA to perform
registration faster than regular memory region.
>b) In absence of FMR support what is the buffer management scheme for
Z-Copy?
>Will SDP work without FMR?
I think that the easiest way out is to implement FMR in the HCA provider
using regular MRs. SDP strongly assumes FMR support in today's
implementation.
Still if some provider dose not emulate FMR using regular MR then, SDP will work?
Haven't looked deeply into it, but I think that ehca has
done this.
>c) How page locking and virtual to physical address conversion is done
for Z-
>Copy buffers?
Take a look at sdp_iocb.c
In short I wanted to know that at driver level whatever address is reaching in ib_sge.addr is a physical address? page locking and virtual to physical address translation is taken care by SDP module?
>Devesh
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