Messages in this thread | | | Subject | Re: [PATCH] vsprintf: Add command line option debug_boot_weak_hash | From | Randy Dunlap <> | Date | Tue, 15 May 2018 08:29:47 -0700 |
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On 05/14/2018 09:38 PM, Tobin C. Harding wrote:
> Documentation/admin-guide/kernel-parameters.txt | 8 ++++++++ > lib/vsprintf.c | 18 ++++++++++++++++++ > 2 files changed, 26 insertions(+) > > diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > index 3b8032431585..c95dd6704592 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 debugging early in the boot sequence. If
That makes it sound like "debug_boot_weak_hash" turns on early debugging.
> + enabled, we use a weak hash instead of siphash to hash > + pointers. Use this option if you need to see pointer > + values during early boot (i.e you are seeing instances
i.e.
> + of '(___ptrval___)') - cryptographically insecure, > + please do not use on production kernels. > + > debug_locks_verbose= > [KNL] verbose self-tests > Format=<0|1>
-- ~Randy
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