Add a counter for when a regular page is mapped, and another for when a huge page is mapped.
Signed-off-by: Yoan Picchi <[email protected]> --- arch/arm64/include/asm/kvm_host.h | 2 ++ arch/arm64/kvm/guest.c | 2 ++ arch/arm64/kvm/mmu.c | 7 +++++++ 3 files changed, 11 insertions(+) diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h index 3d10e6527..863603285 100644 --- a/arch/arm64/include/asm/kvm_host.h +++ b/arch/arm64/include/asm/kvm_host.h @@ -561,6 +561,8 @@ struct kvm_vcpu_stat { u64 wfi_exit_stat; u64 mmio_exit_user; u64 mmio_exit_kernel; + u64 regular_page_mapped; + u64 huge_page_mapped; u64 exits; }; diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 9bbd30e62..14b15fb8f 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -38,6 +38,8 @@ struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("wfi_exit_stat", wfi_exit_stat), VCPU_STAT("mmio_exit_user", mmio_exit_user), VCPU_STAT("mmio_exit_kernel", mmio_exit_kernel), + VCPU_STAT("regular_page_mapped", regular_page_mapped), + VCPU_STAT("huge_page_mapped", huge_page_mapped), VCPU_STAT("exits", exits), VCPU_STAT("halt_poll_success_ns", halt_poll_success_ns), VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns), diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c index 77cb2d28f..3996b28da 100644 --- a/arch/arm64/kvm/mmu.c +++ b/arch/arm64/kvm/mmu.c @@ -914,6 +914,13 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, mark_page_dirty(kvm, gfn); } + if (ret >= 0) { + if (vma_pagesize == PAGE_SIZE) { + vcpu->stat.regular_page_mapped++; + } else { + vcpu->stat.huge_page_mapped++; + } + } out_unlock: spin_unlock(&kvm->mmu_lock); kvm_set_pfn_accessed(pfn); -- 2.17.1 _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
