mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 14:41:39 +00:00
93431e0607
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200526060544.25127-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
41 lines
783 B
ReStructuredText
41 lines
783 B
ReStructuredText
================
|
|
MSR Trace Events
|
|
================
|
|
|
|
The x86 kernel supports tracing most MSR (Model Specific Register) accesses.
|
|
To see the definition of the MSRs on Intel systems please see the SDM
|
|
at https://www.intel.com/sdm (Volume 3)
|
|
|
|
Available trace points:
|
|
|
|
/sys/kernel/debug/tracing/events/msr/
|
|
|
|
Trace MSR reads:
|
|
|
|
read_msr
|
|
|
|
- msr: MSR number
|
|
- val: Value written
|
|
- failed: 1 if the access failed, otherwise 0
|
|
|
|
|
|
Trace MSR writes:
|
|
|
|
write_msr
|
|
|
|
- msr: MSR number
|
|
- val: Value written
|
|
- failed: 1 if the access failed, otherwise 0
|
|
|
|
|
|
Trace RDPMC in kernel:
|
|
|
|
rdpmc
|
|
|
|
The trace data can be post processed with the postprocess/decode_msr.py script::
|
|
|
|
cat /sys/kernel/debug/tracing/trace | decode_msr.py /usr/src/linux/include/asm/msr-index.h
|
|
|
|
to add symbolic MSR names.
|
|
|