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authorLinus Torvalds <torvalds@linux-foundation.org>2018-08-16 07:16:02 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2018-08-16 07:16:02 +0300
commit99a2c789ddeb703cf7b0a3d889ab1a25cf4cbbaf (patch)
tree3a653ba4bfb2db0c8fc52fbb5a2f0dc2e817e513 /Documentation/admin-guide/kernel-parameters.txt
parentfa3b39cdafbfd5d9b1d064f5cf63cf0314f1d070 (diff)
parent9a47249d444d344051c7c0e909fad0e88515a5c2 (diff)
downloadlinux-99a2c789ddeb703cf7b0a3d889ab1a25cf4cbbaf.tar.xz
Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random
Pull random updates from Ted Ts'o: "Some changes to trust cpu-based hwrng (such as RDRAND) for initializing hashed pointers and (optionally, controlled by a config option) to initialize the CRNG to avoid boot hangs" * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: random: Make crng state queryable random: remove preempt disabled region random: add a config option to trust the CPU's hwrng vsprintf: Add command line option debug_boot_weak_hash vsprintf: Use hw RNG for ptr_key random: Return nbytes filled from hw RNG random: Fix whitespace pre random-bytes work
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
-rw-r--r--Documentation/admin-guide/kernel-parameters.txt8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index a32f2a126791..0c883029881a 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -748,6 +748,14 @@
debug [KNL] Enable kernel debugging (events log level).
+ debug_boot_weak_hash
+ [KNL] Enable printing [hashed] pointers early in the
+ boot sequence. If enabled, we use a weak hash instead
+ of siphash to hash pointers. Use this option if you are
+ seeing instances of '(___ptrval___)') and need to see a
+ value (hashed pointer) instead. Cryptographically
+ insecure, please do not use on production kernels.
+
debug_locks_verbose=
[KNL] verbose self-tests
Format=<0|1>