006a0f0607
Because IceLake has 4 fixed performance counters but KVM only supports 3, it is possible for reprogram_fixed_counters to pass to reprogram_fixed_counter an index that is out of bounds for the fixed_pmc_events array. Ultimately intel_find_fixed_event, which is the only place that uses fixed_pmc_events, handles this correctly because it checks against the size of fixed_pmc_events anyway. Every other place operates on the fixed_counters[] array which is sized according to INTEL_PMC_MAX_FIXED. However, it is cleaner if the unsupported performance counters are culled early on in reprogram_fixed_counters. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.