Please ignore this. Pushed the send button to fast again. Regards Nam On Thursday 11 January 2007 18:07, Hoang-Nam Nguyen wrote: > Hello Roland and Christoph H.! > Here is a set of patches for ehca, whose main purpose is to remove unproper > use of > do_mmap() in ehca kernel space as suggested by Christoph H. Other "small" > changes > are: > * Remove "dead" prototype declarations (those without code implementation) > * Use SLAB_ defines instead GFP_ ones when allocating memory from slab cache > > Actually I should separate those patches for more clarity. Unfortunately that > code cleanup above has been incorporated much earlier in our repository, and > I had not paid attention on when I started to rework the mmap() stuff. Sorry > for this inconvenience! > > Now more detail on mmap() rework: > - For eHCA hardware register block we use remap_pfn_range() as previously. > - For queue pages we call pattern vm_insert_page() to register each allocated > kernel page. > - For each mmap-ed resource (hardware register block, send/recv and completion > queue) we introduce a use counter that is incremented and decremented by > the call-backs open()/close(). Destroying a completion queue or queue pair > will succeed only if all associated counters are zero. That means those > resources > must be mmap-ed resp. munmap-ed properly by user space. > > Thanks > Nam >
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