[PATCH v2 0/2] a couple of userspace MSR filtering improvements

[Chris Down]

As discussed in Message-ID <20200714165621.GA3622@xxxxxxxxxxx>.

We all agree that userspace MSR twiddling is non-ideal, but we should be
a bit cautious of taking up too much kmsg buffer if applications do
repeated writes. `allow_writes=1` is possible, but is non-ideal (see
patch 1 changelog).

Also added pid information to the message, since it makes identification
of the source (more or less) unambiguous.

Changes in v2:

- Fixed mostly aesthetic suggestions from Boris. Thanks! :-)

Chris Down (2):
  x86: Prevent userspace MSR access from dominating the console
  x86: Make source of unrecognised MSR writes unambiguous

 arch/x86/kernel/msr.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

-- 
2.28.0