Messages in this thread | | | Subject | [PATCH RFC 0/3] pagemap: make useable for non-privilege users | From | Konstantin Khlebnikov <> | Date | Tue, 12 May 2015 12:43:02 +0300 |
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This patchset tries to make pagemap useable again in the safe way. First patch adds bit 'map-exlusive' which is set if page is mapped only here. Second patch restores access for non-privileged users but hides pfn if task has no capability CAP_SYS_ADMIN. Third patch removes page-shift bits and completes migration to the new pagemap format (flags soft-dirty and mmap-exlusive are available only in the new format).
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Konstantin Khlebnikov (3): pagemap: add mmap-exclusive bit for marking pages mapped only here pagemap: hide physical addresses from non-privileged users pagemap: switch to the new format and do some cleanup
Documentation/vm/pagemap.txt | 3 - fs/proc/task_mmu.c | 178 +++++++++++++++++------------------------- tools/vm/page-types.c | 35 ++++---- 3 files changed, 91 insertions(+), 125 deletions(-)
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