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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-22 17:15:30 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-02-22 17:15:30 -0800 |
| commit | 4b5f9254e4f4375ac845cb17f1732037dd8adeeb (patch) | |
| tree | 92b5ad44c123b6dbd53e424292de0851b795fc5a /init | |
| parent | Merge branch 'userns-for-v5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace (diff) | |
| parent | kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE (diff) | |
| download | linux-dev-4b5f9254e4f4375ac845cb17f1732037dd8adeeb.tar.xz linux-dev-4b5f9254e4f4375ac845cb17f1732037dd8adeeb.zip | |
Merge tag 'topic/kcmp-kconfig-2021-02-22' of git://anongit.freedesktop.org/drm/drm
Pull kcmp kconfig update from Daniel Vetter:
"Make the kcmp syscall available independently of checkpoint/restore.
drm userspaces uses this, systemd uses this, so makes sense to pull it
out from the checkpoint-restore bundle.
Kees reviewed this from security pov and is happy with the final
version"
Link: https://lwn.net/Articles/845448/
* tag 'topic/kcmp-kconfig-2021-02-22' of git://anongit.freedesktop.org/drm/drm:
kcmp: Support selection of SYS_kcmp without CHECKPOINT_RESTORE
Diffstat (limited to 'init')
| -rw-r--r-- | init/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/init/Kconfig b/init/Kconfig index 096e1af5c586..47a3d6502fbd 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -1193,6 +1193,7 @@ endif # NAMESPACES config CHECKPOINT_RESTORE bool "Checkpoint/restore support" select PROC_CHILDREN + select KCMP default n help Enables additional kernel features in a sake of checkpoint/restore. @@ -1736,6 +1737,16 @@ config ARCH_HAS_MEMBARRIER_CALLBACKS config ARCH_HAS_MEMBARRIER_SYNC_CORE bool +config KCMP + bool "Enable kcmp() system call" if EXPERT + help + Enable the kernel resource comparison system call. It provides + user-space with the ability to compare two processes to see if they + share a common resource, such as a file descriptor or even virtual + memory space. + + If unsure, say N. + config RSEQ bool "Enable rseq() system call" if EXPERT default y |