lkml.org 
[lkml]   [2004]   [Feb]   [25]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateTue, 24 Feb 2004 22:00:30 -0800
FromAndrew Morton <>
SubjectRe: cryptoapi highmem bug
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.

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:01    [from the cache]
©2003-2008