Re: [PATCH v4 5/6] docs/about/deprecated: Document RISC-V "pmu-num" deprecation

On Thu, Oct 19, 2023 at 1:47 AM Rob Bradford <rbradford(a)rivosinc.com&gt; wrote: > > This has been replaced by a "pmu-mask" property that provides much more > flexibility. > > Signed-off-by: Rob Bradford <rbradford(a)rivosinc.com&gt; > Acked-by: LIU Zhiwei <zhiwei_liu(a)linux.alibaba.com&gt; Reviewed-by: Alistair Francis <alistair.francis(a)wdc.com&gt; Alistair > --- > docs/about/deprecated.rst | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst > index 2febd2d12f..857b5d4fc4 100644 > --- a/docs/about/deprecated.rst > +++ b/docs/about/deprecated.rst > @@ -405,6 +405,18 @@ Specifying the iSCSI password in plain text on the command line using the > used instead, to refer to a ``--object secret...`` instance that provides > a password via a file, or encrypted. > > +CPU device properties > +''''''''''''''''''''' > + > +``pmu-num=n`` on RISC-V CPUs (since 8.2) > +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > + > +In order to support more flexible counter configurations this has been replaced > +by a ``pmu-mask`` property. If set of counters is continuous then the mask can > +be calculated with ``((2 ^ n) - 1) << 3``. The least significant three bits > +must be left clear. > + > + > Backwards compatibility > ----------------------- > > -- > 2.41.0 > >