Messages in this thread | | | Date | Tue, 24 Feb 2004 22:00:30 -0800 | From | Andrew Morton <> | Subject | Re: cryptoapi highmem bug |
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Jean-Luc Cooke <jlcooke@certainkey.com> wrote: > > How do I check for equal real addresses from two virtual ones?
I don't think there is a practical way of doing this. It would involve comparing the virtual address with the kmap and atomic kmap regions, performing a pagetable walk, extracting the pageframe. If the page is not in a kmap area generate the pageframe directly. Make that work on all architectures. Very yuk.
If practical this API should have been defined in terms of (page/offset/len) and it should have kmapped the pages itself. I guess it's too late for that.
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