diff options
| author | Quan Zhou <zhouquan@iscas.ac.cn> | 2024-10-15 10:58:37 +0800 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2024-10-28 16:41:14 +0530 |
| commit | eded6754f398b5b4950e8f593f75fee63a8b49ad (patch) | |
| tree | e092b680fbb846ce3f4823e1c02a1fb20d1cccca /arch/riscv/kvm/vcpu.c | |
| parent | 5bb5ccb3e8d8dba29941cd78d5c1bcd27b227b4a (diff) | |
riscv: KVM: add basic support for host vs guest profiling
For the information collected on the host side, we need to
identify which data originates from the guest and record
these events separately, this can be achieved by having
KVM register perf callbacks.
Signed-off-by: Quan Zhou <zhouquan@iscas.ac.cn>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/00342d535311eb0629b9ba4f1e457a48e2abee33.1728957131.git.zhouquan@iscas.ac.cn
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 8d7d381737ee..e8ffb3456898 100644 --- a/arch/riscv/kvm/vcpu.c +++ b/arch/riscv/kvm/vcpu.c @@ -226,6 +226,13 @@ bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu) return (vcpu->arch.guest_context.sstatus & SR_SPP) ? true : false; } +#ifdef CONFIG_GUEST_PERF_EVENTS +unsigned long kvm_arch_vcpu_get_ip(struct kvm_vcpu *vcpu) +{ + return vcpu->arch.guest_context.sepc; +} +#endif + vm_fault_t kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) { return VM_FAULT_SIGBUS; |