Messages in this thread | | | Date | Thu, 4 Oct 2007 12:34:07 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [14/18] Configure stack size |
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On Wed, 3 Oct 2007, David Miller wrote:
> > there is still code that does DMA from and to the stack.... > > how would this work with virtual allocated stack? > > That's a bug and must be fixed. > > There honestly shouldn't be that many examples around. > > FWIW, there are platforms using a virtually allocated kernel stack > already.
There would be a way to address this by checking in the DMA layer for a virtually mapped page and then segmenting I/O at the page boundaries to the individual pages. We may need that anyways for large block sizes.
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