On Wed, Feb 01, 2023 at 03:12:37PM -0800, Atish Patra wrote: > KVM module needs to know how many hardware counters and the counter > width that the platform supports. Otherwise, it will not be able to show > optimal value of virtual counters to the guest. The virtual hardware > counters also need to have the same width as the logical hardware > counters for simplicity. However, there shouldn't be mapping between > virtual hardware counters and logical hardware counters. As we don't > support hetergeneous harts or counters with different width as of now, > the implementation relies on the counter width of the first available > programmable counter. > > Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx> > Signed-off-by: Atish Patra <atishp@xxxxxxxxxxxx> > --- > drivers/perf/riscv_pmu_sbi.c | 37 ++++++++++++++++++++++++++++++++-- > include/linux/perf/riscv_pmu.h | 3 +++ > 2 files changed, 38 insertions(+), 2 deletions(-) > Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
