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| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2022-04-27 13:03:04 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2022-04-27 17:55:54 +0300 |
| commit | 8d75f7b4a3dfd5714a5dc87cfdaa27bd2d14aa48 (patch) | |
| tree | 9666afed2632c28503f77be06046946217269c61 /tools/perf/scripts/python/syscall-counts.py | |
| parent | e5483b45f6ed62e5434e74af2025a15d415480af (diff) | |
| download | linux-8d75f7b4a3dfd5714a5dc87cfdaa27bd2d14aa48.tar.xz | |
platform/x86: intel-uncore-freq: Prevent driver loading in guests
Loading this driver in guests results in unchecked MSR access error for
MSR 0x620.
There is no use of reading and modifying package/die scope uncore MSRs
in guests. So check for CPU feature X86_FEATURE_HYPERVISOR to prevent
loading of this driver in guests.
Fixes: dbce412a7733 ("platform/x86/intel-uncore-freq: Split common and enumeration part")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=215870
Suggested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20220427100304.2562990-1-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions