Messages in this thread | | | Date | Mon, 11 May 2020 09:42:43 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC PATCH 0/7] mm: Get rid of vmalloc_sync_(un)mappings() |
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On Sat, May 09, 2020 at 12:05:29PM -0700, Andy Lutomirski wrote:
> On x86_64, the only real advantage is that the handful of corner cases > that make vmalloc faults unpleasant (mostly relating to vmap stacks) > go away. On x86_32, a bunch of mind-bending stuff (everything your > series deletes but also almost everything your series *adds*) goes > away. There may be a genuine tiny performance hit on 2-level systems > due to the loss of huge pages in vmalloc space, but I'm not sure I > care or that we use them anyway on these systems. And PeterZ can stop > even thinking about RCU. > > Am I making sense?
I think it'll work for x86_64 and that is really all I care about :-)
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