Re: [RFC] consistent_sync and non L1 cache line aligned buffers

At 08:46 AM 7/15/2003, Tom Rini wrote:

Well, one thing that is worth noting is that the USB people knew this
was a problem, and it was / should have been fixed in the 2.5 cycle.
Similarly, SCSI was cleaned up a lot, so perhaps this has been fixed
there.  I think it's generally known that doing DMA off of the stack is
a bad idea, and should be fixed when found.

I agree this is VERY bad idea but the fact is that there is a code which
does such nasty things.

I truly hope all this will/was fixed in 2.5 but frankly I wouldn't be so
sure :)

Unfortunately, for production 2.5 is unusable and will be for some time.
A lot of people (I think majority) still use 2.4. And 2.4 (as of
2.4.22-pre6) is still broken in this respect...

Eugene


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