[openib-general] Problem with using krping

[Tom Tucker]

It looks like this is an artifact of the ALIGN macro truncating to int (i.e.
using - 1UL instead of -1). I believe that this was fixed on Sep 22 by Dave
Miller. 

On 11/22/06 10:46 PM, "Krishna Kumar2" <krkumar2 at in.ibm.com> wrote:

> Hi,
> 
> While using amso cards and running krping with :
> 
> server: /bin/echo server,port=9999,verbose,addr=x.x.x.x > /proc/krping
> client: /bin/echo client,port=9999,verbose,addr=x.x.x.x > /proc/krping
> 
> the client fails with (in /var/log/messages) :
>         "c2_get_dma_mr:423
>         couldn't vmalloc page_list of size 0
>         krping: recv_buf reg_mr failed"
> 
> The problem (for me) happens since c2_reg_phys_mr() calculates page_shift
> was as 15 and size is 0xffffffff resulting in pbl_depth getting set to
> zero, and
> vmalloc returns NULL. When I changed c2_get_dma_mr() on both server/client
> to use address 0xefffffff, the tests works correctly.
> 
> What is the right fix for this problem ? I am using *rc3 bits and krping
> is from
> the gen2/*/utils directory, and at revision 10156.
> 
> Thanks,
> 
> - KK
> 
> 
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