The patch titled
Subject: pagemap-update-documentation-fix
has been removed from the -mm tree. Its filename was
pagemap-update-documentation-fix.patch
This patch was dropped because it was folded into pagemap-update-documentation.patch
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: pagemap-update-documentation-fix
various tweaks
Cc: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx>
Cc: Mark Williamson <mwilliamson@xxxxxxxxxxxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/vm/pagemap.txt | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN Documentation/vm/pagemap.txt~pagemap-update-documentation-fix Documentation/vm/pagemap.txt
--- a/Documentation/vm/pagemap.txt~pagemap-update-documentation-fix
+++ a/Documentation/vm/pagemap.txt
@@ -22,9 +22,9 @@ There are three components to pagemap:
* Bit 62 page swapped
* Bit 63 page present
- Since Linux 4.0 only users with the CAP_SYS_ADMIN capability can get PFNs:
- for unprivileged users from 4.0 till 4.2 open fails with -EPERM, starting
- from from 4.2 PFN field is zeroed if user has no CAP_SYS_ADMIN capability.
+ Since Linux 4.0 only users with the CAP_SYS_ADMIN capability can get PFNs.
+ In 4.0 and 4.1 opens by unprivileged fail with -EPERM. Starting from
+ 4.2 the PFN field is zeroed if the user does not have CAP_SYS_ADMIN.
Reason: information about PFNs helps in exploiting Rowhammer vulnerability.
If the page is not present but in swap, then the PFN contains an
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
dax-revert-userfaultfd-change.patch
pagemap-update-documentation.patch
mm-show-proportional-swap-share-of-the-mapping-fix.patch
mm-improve-__gfp_noretry-comment-based-on-implementation-fix.patch
memcg-export-struct-mem_cgroup-fix.patch
memcg-export-struct-mem_cgroup-fix-2.patch
mm-hugetlb-add-cache-of-descriptors-to-resv_map-for-region_add-fix.patch
x86-use-generic-early-mem-copy-fix.patch
mm-mmap-simplify-the-failure-return-working-flow-fix.patch
zswap-dynamic-pool-creation-fix.patch
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