On Wed, Apr 10, 2024 at 05:07:41PM -0700, Atish Patra wrote: > PMU Snapshot function allows to minimize the number of traps when the > guest access configures/access the hpmcounters. If the snapshot feature > is enabled, the hypervisor updates the shared memory with counter > data and state of overflown counters. The guest can just read the > shared memory instead of trap & emulate done by the hypervisor. > > This patch doesn't implement the counter overflow yet. > > Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx> > Signed-off-by: Atish Patra <atishp@xxxxxxxxxxxx> > --- > arch/riscv/include/asm/kvm_vcpu_pmu.h | 7 ++ > arch/riscv/kvm/vcpu_pmu.c | 121 +++++++++++++++++++++++++- > arch/riscv/kvm/vcpu_sbi_pmu.c | 3 + > 3 files changed, 130 insertions(+), 1 deletion(-) > Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
