lkml.org 
[lkml]   [2002]   [Nov]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] flush_cache_page while pte valid
From
   From: Hugh Dickins <hugh@veritas.com>
Date: Tue, 12 Nov 2002 06:53:04 +0000 (GMT)
Thanks for shedding light on that; but I'm still wondering if there
might be data loss if userspace modifies the page in the tiny window
between correctly positioned flush_cache_page and pte invalidation?

The flush merely writes back the data, a copy-back operation, fully L2
cache coherent. All cpus will see correct data if an intermittant
store occurs.
-
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 13:30    [from the cache]
©2003-2011 Jasper Spaans