> gfpflags_to_migratetype()
> if (memory_mirror_enabled()) { /* We want to mirror all unmovable pages */
> if (!(gfp_mask & __GFP_MOVABLE))
> return MIGRATE_MIRROR
> }
I'm not sure that we can divide memory into just two buckets of "mirrored" and
"movable".
My expectation is that there will be memory that is neither mirrored, nor
movable. We'd
allocate that memory to user proceses. Uncorrected errors in that memory would
result
in the death of the process (except in the case where the page is a clean copy
mapped from
a disk file ... e.g. .text mapping instructions from an executable). Linux
would offline
the affected 4K page so as not to hit the problem again.
-Tony
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