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| author | David Vrabel | 2014-01-07 12:44:32 +0100 |
|---|---|---|
| committer | David Vrabel | 2014-05-15 17:14:44 +0200 |
| commit | 3cb83e46d032505016ab2565f067e24c8cba9a9d (patch) | |
| tree | 11eee2d731dd1fa83bede6f006736ff246082b47 /arch/x86/xen/setup.c | |
| parent | x86/xen: fix set_phys_range_identity() if pfn_e > MAX_P2M_PFN (diff) | |
| download | kernel-qcow2-linux-3cb83e46d032505016ab2565f067e24c8cba9a9d.tar.gz kernel-qcow2-linux-3cb83e46d032505016ab2565f067e24c8cba9a9d.tar.xz kernel-qcow2-linux-3cb83e46d032505016ab2565f067e24c8cba9a9d.zip | |
x86/xen: compactly store large identity ranges in the p2m
Large (multi-GB) identity ranges currently require a unique middle page
(filled with p2m_identity entries) per 1 GB region.
Similar to the common p2m_mid_missing middle page for large missing
regions, introduce a p2m_mid_identity page (filled with p2m_identity
entries) which can be used instead.
set_phys_range_identity() thus only needs to allocate new middle pages
at the beginning and end of the range.
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Tested-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen/setup.c')
0 files changed, 0 insertions, 0 deletions