Messages in this thread | | | Subject | Re: irq-disabled vs vmap vs text_poke | From | Peter Zijlstra <> | Date | Tue, 17 Feb 2009 09:31:56 +0100 |
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On Tue, 2009-02-17 at 04:03 +0100, Nick Piggin wrote:
> It is not a bad idea, but I don't think it quite goes far enough. > IMO we should reserve 2 pages of virtual memory for each CPU, and > then do the mapping/unmapping without locking, and with another > variant of unmap_kernel_range that does not do the global TLB > flush.
A bit like kmap_atomic() except for 2 pages and !highmem. Should work.
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