Messages in this thread | | | Subject | Re: [PATCH] i386 __verify_write fixes | From | Alan Cox <> | Date | 22 Oct 2002 16:06:18 +0100 |
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On Sun, 2002-10-13 at 21:13, Brian Gerst wrote: > mark the page read-only. A 386 would continue to write to the page when > the first thread woke up again. We need to prevent anyone from changing > the page permissions until we are done writing to userspace. My > suggestion is to replace access_ok() with begin_user_{read,write}(), and > add end_user_{read,write}(). Thoughs?
For 2.6 with the time scale as it is I think we just block pre-emption on 386. Its not a big deal since almost nobody uses 386 any more
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