KVM: x86/mmu: Add detailed page size stats

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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>

...

This commit is contained in:

Mingwei Zhang 2021-08-02 21:46:07 -07:00 • committed by Paolo Bonzini

parent 088acd2352

commit 71f51d2c32

5 changed files with 33 additions and 31 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

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9

arch/x86/include/asm/kvm_host.h

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4

arch/x86/kvm/mmu.h

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32

arch/x86/kvm/mmu/mmu.c

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15

arch/x86/kvm/mmu/tdp_mmu.c

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4

arch/x86/kvm/x86.c

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