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e33b6d79ac
Limit the set of MSRs for fixed PMU counters based on the number of fixed counters actually supported by the host so that userspace doesn't waste time saving and restoring dummy values. Signed-off-by: Like Xu <likexu@tencent.com> [sean: split for !enable_pmu logic, drop min(), write changelog] Link: https://lore.kernel.org/r/20230124234905.3774678-6-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.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.