Messages in this thread | | | Date | Mon, 26 May 2014 16:56:05 +0200 | From | Peter Zijlstra <> | Subject | [RFC][PATCH 0/5] VM_PINNED |
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Hi all,
I mentioned at LSF/MM that I wanted to revive this, and at the time there were no disagreements.
I finally got around to refreshing the patch(es) so here goes.
These patches introduce VM_PINNED infrastructure, vma tracking of persistent 'pinned' page ranges. Pinned is anything that has a fixed phys address (as required for say IO DMA engines) and thus cannot use the weaker VM_LOCKED. One popular way to pin pages is through get_user_pages() but that not nessecarily the only way.
Roland, as said, I need some IB assistance, see patches 4 and 5, where I got lost in the qib and ipath code.
Patches 1-3 compile tested.
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