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| author |  Atish Patra <atishp@rivosinc.com>
| 2023-02-07 01:55:22 -0800 |
|---|---|---|
| committer |  Anup Patel <anup@brainfault.org>
| 2023-02-07 20:35:51 +0530 |
| commit | 8f0153ecd3bf184bc06afca25b737c707fa4d765 (patch) | |
| tree | 05d97577625e023d709eca63fb8d8de5184e5256 /arch/riscv/kvm/vcpu.c | |
| parent | RISC-V: KVM: Modify SBI extension handler to return SBI error code (diff) | |
| download | linux-8f0153ecd3bf184bc06afca25b737c707fa4d765.tar.gz linux-8f0153ecd3bf184bc06afca25b737c707fa4d765.tar.bz2 linux-8f0153ecd3bf184bc06afca25b737c707fa4d765.zip | |
RISC-V: KVM: Add skeleton support for perf
This patch only adds barebone structure of perf implementation. Most
of the function returns zero at this point and will be implemented
fully in the future.
Reviewed-by: Anup Patel <anup@brainfault.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Signed-off-by: Anup Patel <anup@brainfault.org>
Diffstat (limited to 'arch/riscv/kvm/vcpu.c')
| -rw-r--r-- | arch/riscv/kvm/vcpu.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c index 7c08567097f0..7d010b0be54e 100644 --- a/arch/riscv/kvm/vcpu.c +++ b/arch/riscv/kvm/vcpu.c @@ -138,6 +138,8 @@ static void kvm_riscv_reset_vcpu(struct kvm_vcpu *vcpu) WRITE_ONCE(vcpu->arch.irqs_pending, 0); WRITE_ONCE(vcpu->arch.irqs_pending_mask, 0); + kvm_riscv_vcpu_pmu_reset(vcpu); + vcpu->arch.hfence_head = 0; vcpu->arch.hfence_tail = 0; memset(vcpu->arch.hfence_queue, 0, sizeof(vcpu->arch.hfence_queue)); @@ -194,6 +196,9 @@ int kvm_arch_vcpu_create(struct kvm_vcpu *vcpu) /* Setup VCPU timer */ kvm_riscv_vcpu_timer_init(vcpu); + /* setup performance monitoring */ + kvm_riscv_vcpu_pmu_init(vcpu); + /* Reset VCPU */ kvm_riscv_reset_vcpu(vcpu); @@ -216,6 +221,8 @@ void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) /* Cleanup VCPU timer */ kvm_riscv_vcpu_timer_deinit(vcpu); + kvm_riscv_vcpu_pmu_deinit(vcpu); + /* Free unused pages pre-allocated for G-stage page table mappings */ kvm_mmu_free_memory_cache(&vcpu->arch.mmu_page_cache); } |