diff options
| author | Mingwei Zhang | 2021-08-02 21:46:07 -0700 |
|---|---|---|
| committer | Paolo Bonzini | 2021-08-20 16:06:34 -0400 |
| commit | 71f51d2c3253645ccff69d6fa3a870f47005f0b3 (patch) | |
| tree | 491d1cba8e77f7dfcb4b623d0fa21f6c954807ef /arch/x86/include | |
| parent | 088acd23526647844aec1c39db4ad02552c86c7b (diff) | |
KVM: x86/mmu: Add detailed page size stats
Existing KVM code tracks the number of large pages regardless of their
sizes. Therefore, when large page of 1GB (or larger) is adopted, the
information becomes less useful because lpages counts a mix of 1G and 2M
pages.
So remove the lpages since it is easy for user space to aggregate the info.
Instead, provide a comprehensive page stats of all sizes from 4K to 512G.
Suggested-by: Ben Gardon <bgardon@google.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Signed-off-by: Mingwei Zhang <mizhang@google.com>
Cc: Jing Zhang <jingzhangos@google.com>
Cc: David Matlack <dmatlack@google.com>
Cc: Sean Christopherson <seanjc@google.com>
Message-Id: <20210803044607.599629-4-mizhang@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 28c85c80e831..4c4983a9378c 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1214,7 +1214,14 @@ struct kvm_vm_stat { u64 mmu_recycled; u64 mmu_cache_miss; u64 mmu_unsync; - u64 lpages; + union { + struct { + atomic64_t pages_4k; + atomic64_t pages_2m; + atomic64_t pages_1g; + }; + atomic64_t pages[KVM_NR_PAGE_SIZES]; + }; u64 nx_lpage_splits; u64 max_mmu_page_hash_collisions; u64 max_mmu_rmap_size; |