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| author | Ritesh Harjani (IBM) <ritesh.list@gmail.com> | 2026-03-09 18:08:38 +0530 |
|---|---|---|
| committer | Madhavan Srinivasan <maddy@linux.ibm.com> | 2026-03-30 15:52:17 +0530 |
| commit | d1503aa9ab8057cb93367e0184528f61f7510845 (patch) | |
| tree | 95062bb7661df700bcb6cf61c05c1690c4446916 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 948b71aa81cd89b222942db6055e8d9c51c54e78 (diff) | |
powerpc/64s: Add support for huge pfnmaps
This uses _RPAGE_SW2 bit for the PMD and PUDs similar to PTEs.
This also adds support for {pte,pmd,pud}_pgprot helpers needed for
follow_pfnmap APIs.
This allows us to extend the PFN mappings, e.g. PCI MMIO bars where
it can grow as large as 8GB or even bigger, to map at PMD / PUD level.
VFIO PCI core driver already supports fault handling at PMD / PUD level
for more efficient BAR mappings.
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/6fca726574236f556dd4e1e259692e82a4c29e85.1773058761.git.ritesh.list@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
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