Re: [PATCH v2] KVM: PPC: Book3S: Ratelimit copy data failure error messages

On 17/02/17 04:10, Vipin K Parashar wrote:

kvm_ppc_mmu_book3s_32/64 xlat() logs "KVM can't copy data" error
upon failing to copy user data to kernel space. This floods kernel
log once such fails occur in short time period. Ratelimit this
error to avoid flooding kernel logs upon copy data failures.

Signed-off-by: Vipin K Parashar <redacted>
---

What causes the flooding, can it be triggered on demand from user
space? I presume you'll need to have permissions to /dev/kvm to
trigger it? Could you clarify the scope, is it just called
during emulation with KVM_PR?

Balbir Singh.