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commit cbb359d81a2695bb5e63ec9de06fcbef28518891 upstream. Move the common (or at least "ignored") aspects of resetting the vPMU to common x86 code, along with the stop/release helpers that are no used only by the common pmu.c. There is no need to manually handle fixed counters as all_valid_pmc_idx tracks both fixed and general purpose counters, and resetting the vPMU is far from a hot path, i.e. the extra bit of overhead to the PMC from the index is a non-issue. Zero fixed_ctr_ctrl in common code even though it's Intel specific. Ensuring it's zero doesn't harm AMD/SVM in any way, and stopping the fixed counters via all_valid_pmc_idx, but not clearing the associated control bits, would be odd/confusing. Make the .reset() hook optional as SVM no longer needs vendor specific handling. Cc: stable@vger.kernel.org Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com> Link: https://lore.kernel.org/r/20231103230541.352265-2-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.