diff options
| author | Leonardo Bras <[email protected]> | 2021-04-08 17:19:16 -0300 |
|---|---|---|
| committer | Michael Ellerman <[email protected]> | 2021-04-14 23:04:16 +1000 |
| commit | 472724111f0f72042deb6a9dcee9578e5398a1a1 (patch) | |
| tree | 3856b1ee1b5366aa0610628da442903bb2a069cc /tools/perf/scripts/python/stackcollapse.py | |
| parent | 672bff581e19d5d7bef993f910ed385c4054cbbc (diff) | |
powerpc/iommu: Enable remaining IOMMU Pagesizes present in LoPAR
According to LoPAR, ibm,query-pe-dma-window output named "IO Page Sizes"
will let the OS know all possible pagesizes that can be used for creating a
new DDW.
Currently Linux will only try using 3 of the 8 available options:
4K, 64K and 16M. According to LoPAR, Hypervisor may also offer 32M, 64M,
128M, 256M and 16G.
Enabling bigger pages would be interesting for direct mapping systems
with a lot of RAM, while using less TCE entries.
Signed-off-by: Leonardo Bras <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions