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| author | Heiko Carstens | 2012-10-17 12:18:05 +0200 |
|---|---|---|
| committer | Martin Schwidefsky | 2012-11-23 11:14:25 +0100 |
| commit | f7817968d03df390d77d3af1b13298efa4f31047 (patch) | |
| tree | 11e355fc56ce3ff4fd433a3fa282881a6481d676 /arch/s390/kernel/entry64.S | |
| parent | s390/mm,vmem: use 2GB frames for identity mapping (diff) | |
| download | kernel-qcow2-linux-f7817968d03df390d77d3af1b13298efa4f31047.tar.gz kernel-qcow2-linux-f7817968d03df390d77d3af1b13298efa4f31047.tar.xz kernel-qcow2-linux-f7817968d03df390d77d3af1b13298efa4f31047.zip | |
s390/mm,vmemmap: use 1MB frames for vmemmap
Use 1MB frames for vmemmap if EDAT1 is available in order to
reduce TLB pressure
Always use a 1MB frame even if its only partially needed for
struct pages. Otherwise we would end up with a mix of large
frame and page mappings, because vmemmap_populate gets called
for each section (256MB -> 3.5MB memmap) separately.
Worst case is that we would waste 512KB.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/entry64.S')
0 files changed, 0 insertions, 0 deletions