[Xen-devel] [PATCH v5 0/2] xtf/vpmu VPMU tests

[Mohit Gambhir <mohit.gambhir@xxxxxxxxxx>]

v5: 

Incorporated review comments - 

+ Changed test type from utility to functional
+ Test is now defined only for hvm64 instead of ALL_ENVIRONMENTS
+ Several code styling and formatting changes
+ Expanded test description for doxygen
+ Added max_leaf check before cpuid_count
+ Addded PDCM bit check before reading MSR_PERF_CAPABILTIES

Original: 

This patch series adds tests to validate VPMU functionality on x86. The tests
write and read PMU MSRs to make sure that that they have been exposed
correctly.

The ultimate goal is to address security vulnerabilities, if any, that are
vaguely mentioned in XSA-163 and make VPMU available to guests with reasonable
caveats.

Further testing is required to validate the MSR state save/restore functionality
of the VPMU, concurrent usage of the counters by a number of guests and analyze
if any other non-PMU MSRs have been exposed incorrectly.

Mohit Gambhir (2):
  xtf/vpmu: Add Intel PMU MSR addresses
  xtf/vpmu: MSR read/write tests for VPMU

 arch/x86/include/arch/msr-index.h |  12 ++
 tests/vpmu/Makefile               |   9 +
 tests/vpmu/main.c                 | 442 ++++++++++++++++++++++++++++++++++++++
 3 files changed, 463 insertions(+)
 create mode 100644 tests/vpmu/Makefile
 create mode 100644 tests/vpmu/main.c

-- 
2.9.3


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