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memblock_x86_reserve_range
2011 Jun 13
5
3.0.0-rc2: Xen: High amount of kernel "reserved" memory, about 33% in 256MB DOMU
Hi,
another issue I''m seeing with 3.0-rc2 and Xen is that there is an
unexpectedly high amount of kernel reserved memory.
I suspect that Linux allocates page table entries and corresponding
data structures for the whole 6GB areas of the provided ''physical
RAM map'' even though it has rather big unusable holes in it.
[ 0.000000] BIOS-provided physical RAM map:
[