Add a counter for when the one want to unmap all the ram of a VM. This mostly happens when one restart a VM so we make sure to clear the ram and free the memory for other VMs.
Signed-off-by: Yoan Picchi <[email protected]> --- arch/arm64/include/asm/kvm_host.h | 1 + arch/arm64/kvm/guest.c | 1 + arch/arm64/kvm/mmu.c | 2 ++ 3 files changed, 4 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 76c81aa79..fa59b669c 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -549,6 +549,7 @@ struct kvm_vm_stat { ulong remote_tlb_flush; ulong flush_all_cache_lines; ulong memory_slot_unmaped; + ulong stage2_unmap_vm; ulong cached_page_invalidated; }; diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index cd227136e..129c0d53d 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -43,6 +43,7 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VM_STAT("remote_tlb_flush", remote_tlb_flush), VM_STAT("flush_all_cache_lines", flush_all_cache_lines), VM_STAT("memory_slot_unmaped", memory_slot_unmaped), + VM_STAT("stage2_unmap_vm", stage2_unmap_vm), VM_STAT("cached_page_invalidated", cached_page_invalidated), VCPU_STAT("exits", exits), VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 1e8aeafc2..6d150a785 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -471,6 +471,8 @@ void stage2_unmap_vm(struct kvm *kvm) mmap_read_lock(current->mm); spin_lock(&kvm->mmu_lock); + kvm->stat.stage2_unmap_vm++; + slots = kvm_memslots(kvm); kvm_for_each_memslot(memslot, slots) stage2_unmap_memslot(kvm, memslot); -- 2.17.1 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
