Hi Will, On Tue, Jul 22, 2025 at 8:45 AM Atish Patra <atishp@xxxxxxxxxxxx> wrote: > > SBI v3.0 specification[1] added two new improvements to the PMU chaper. > The SBI v3.0 specification is frozen and under public review phase as > per the RISC-V International guidelines. > > 1. Added an additional get_event_info function to query event availablity > in bulk instead of individual SBI calls for each event. This helps in > improving the boot time. > > 2. Raw event width allowed by the platform is widened to have 56 bits > with RAW event v2 as per new clarification in the priv ISA[2]. > > Apart from implementing these new features, this series improves the gpa > range check in KVM and updates the kvm SBI implementation to SBI v3.0. > > The opensbi patches have been merged. This series can be found at [3]. > > [1] https://github.com/riscv-non-isa/riscv-sbi-doc/releases/download/v3.0-rc7/riscv-sbi.pdf > [2] https://github.com/riscv/riscv-isa-manual/issues/1578 > [3] https://github.com/atishp04/linux/tree/b4/pmu_event_info_v4 > > Signed-off-by: Atish Patra <atishp@xxxxxxxxxxxx> > --- > Changes in v4: > - Rebased on top of v6.16-rc7 > - Fixed a potential compilation issue in PATCH5. > - Minor typos fixed PATCH2 and PATCH3. > - Fixed variable ordering in PATCH6 > - Link to v3: https://lore.kernel.org/r/20250522-pmu_event_info-v3-0-f7bba7fd9cfe@xxxxxxxxxxxx > > Changes in v3: > - Rebased on top of v6.15-rc7 > - Link to v2: https://lore.kernel.org/r/20250115-pmu_event_info-v2-0-84815b70383b@xxxxxxxxxxxx > > Changes in v2: > - Dropped PATCH 2 to be taken during rcX. > - Improved gpa range check validation by introducing a helper function > and checking the entire range. > - Link to v1: https://lore.kernel.org/r/20241119-pmu_event_info-v1-0-a4f9691421f8@xxxxxxxxxxxx > > --- > Atish Patra (9): > drivers/perf: riscv: Add SBI v3.0 flag > drivers/perf: riscv: Add raw event v2 support > RISC-V: KVM: Add support for Raw event v2 > drivers/perf: riscv: Implement PMU event info function > drivers/perf: riscv: Export PMU event info function > KVM: Add a helper function to validate vcpu gpa range > RISC-V: KVM: Use the new gpa range validate helper function > RISC-V: KVM: Implement get event info function > RISC-V: KVM: Upgrade the supported SBI version to 3.0 > > arch/riscv/include/asm/kvm_vcpu_pmu.h | 3 + > arch/riscv/include/asm/kvm_vcpu_sbi.h | 2 +- > arch/riscv/include/asm/sbi.h | 13 +++ > arch/riscv/kvm/vcpu_pmu.c | 75 ++++++++++++- > arch/riscv/kvm/vcpu_sbi_pmu.c | 3 + > arch/riscv/kvm/vcpu_sbi_sta.c | 6 +- > drivers/perf/riscv_pmu_sbi.c | 191 +++++++++++++++++++++++++--------- > include/linux/kvm_host.h | 2 + > include/linux/perf/riscv_pmu.h | 1 + > virt/kvm/kvm_main.c | 21 ++++ > 10 files changed, 258 insertions(+), 59 deletions(-) Are you okay with this series going through the KVM RISC-V tree ? Regards, Anup
