Jan Beulich
2006-Feb-07 16:05 UTC
[Xen-devel] [PATCH] x86_64 linux: don''t use USER_PTRS_PER_PGD in mm_walk()
Since USER_PTRS_PER_PGD depends on TASK_SIZE and thus on the current thread, it must not be used in code that can be called in the context switch path (otherwise the 32-bitness of the outgoing task is used here rather then the 32-bitness of the incoming one, possibly resulting in large parts of the page tables not getting converted to read-only). Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel