Messages in this thread | | | From | Jim Mattson <> | Date | Fri, 9 Feb 2018 14:55:47 -0800 | Subject | Re: [RFC 03/12] KVM/VMX: Use the new host mapping API for virtual_apic_page |
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On Fri, Feb 9, 2018 at 4:15 AM, KarimAllah Ahmed <karahmed@amazon.com> wrote:
> Can you elaborate a bit? I do not really understand what is the concern.
I can't find the posting that gave me this impression. The only thing I can find is the following in Documentation/vm/highmem.txt:
(*) kmap(). This permits a short duration mapping of a single page. It needs global synchronization, but is amortized somewhat. It is also prone to deadlocks when using in a nested fashion, and so it is not recommended for new code.
What constitutes a "short duration," and does this new usage qualify?
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