[openfabrics-ewg] [PATCH] ehca backport openib_dma_addr_t_ofed_1.1_to_2_6_9.patch

[Hoang-Nam Nguyen]

Hi,
> Please note 2.6.9 from kernel.org is not supported by OFED -
> these backports are actually for RHEL4 U2.
ok
> This does not make sense to me.
> Can we just do
> #define dma_map dma64_map
Sure. We can do that as newer kernels map dma_addr_t to u32 resp u64.
> And what will this do on non-ppc arches?
For non-ppc arches and non-ibmebus, ie. for pci and vio,
dma64_map/unmap_single() will call the actual dma_map/unmap_single(),
whose result is 32-bit number and does fit certainly into caller's
assigment
of type dma_addr_t/dma64_addr_t.
> I don't think we can add such intrusive patches at this late stage.
I see your point. However this touches only usage of dma_addr_t and
dma_map/unmap_single() as explained above. So I personally think it should
not harm the rest `theoretically`. Note that this is related to and
requires
ibmebus patch.
Hm, if this will not be included in 1.1, do we plan to have a kind of
"service pack" then? If yes, can you tell me the schedules?
Thanks!
Nam Nguyen