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| author | Atish Patra <atishp@rivosinc.com> | 2024-04-20 08:17:31 -0700 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2024-04-26 13:13:52 +0530 |
| commit | 08fb07d6dcf7101c1c98782f2b4e27aca7f855c3 (patch) | |
| tree | 9e48103acdc86786274b75f310064d5c2d7f8acd /arch/riscv/include | |
| parent | 16b0bde9a37c0af404318ca3cf64a11edccb8777 (diff) | |
| download | linux-08fb07d6dcf7101c1c98782f2b4e27aca7f855c3.tar.gz linux-08fb07d6dcf7101c1c98782f2b4e27aca7f855c3.tar.bz2 linux-08fb07d6dcf7101c1c98782f2b4e27aca7f855c3.zip | |
RISC-V: KVM: Support 64 bit firmware counters on RV32
The SBI v2.0 introduced a fw_read_hi function to read 64 bit firmware
counters for RV32 based systems.
Add infrastructure to support that.
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Link: https://lore.kernel.org/r/20240420151741.962500-16-atishp@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/kvm_vcpu_pmu.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/riscv/include/asm/kvm_vcpu_pmu.h b/arch/riscv/include/asm/kvm_vcpu_pmu.h index 257f17641e00..55861b5d3382 100644 --- a/arch/riscv/include/asm/kvm_vcpu_pmu.h +++ b/arch/riscv/include/asm/kvm_vcpu_pmu.h @@ -20,7 +20,7 @@ static_assert(RISCV_KVM_MAX_COUNTERS <= 64); struct kvm_fw_event { /* Current value of the event */ - unsigned long value; + u64 value; /* Event monitoring status */ bool started; @@ -91,6 +91,8 @@ int kvm_riscv_vcpu_pmu_ctr_cfg_match(struct kvm_vcpu *vcpu, unsigned long ctr_ba struct kvm_vcpu_sbi_return *retdata); int kvm_riscv_vcpu_pmu_ctr_read(struct kvm_vcpu *vcpu, unsigned long cidx, struct kvm_vcpu_sbi_return *retdata); +int kvm_riscv_vcpu_pmu_fw_ctr_read_hi(struct kvm_vcpu *vcpu, unsigned long cidx, + struct kvm_vcpu_sbi_return *retdata); void kvm_riscv_vcpu_pmu_init(struct kvm_vcpu *vcpu); int kvm_riscv_vcpu_pmu_snapshot_set_shmem(struct kvm_vcpu *vcpu, unsigned long saddr_low, unsigned long saddr_high, unsigned long flags, |