On 9/4/19 2:22 PM, Christoph Hellwig wrote:
On Wed, Sep 04, 2019 at 09:32:30AM +0200, Thomas Hellström (VMware) wrote:
That sounds great. Is there anything I can do to help out? I thought this
was more or less a dead end since the current dma_mmap_ API requires the
mmap_sem to be held in write mode (modifying the vma->vm_flags) whereas
fault() only offers read mode. But that would definitely work.
We'll just need to split into a setup and faul phase. I have some
sketches from a while ago, let me dust them off so that you can
try them.
I'd be happy to.
Thanks,
Thomas
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