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SubjectRe: [PATCH v3 4/7] KVM: X86: Introduce mmu_rmaps_stat per-vm debugfs file
On Mon, Aug 02, 2021 at 05:25:12PM +0200, Paolo Bonzini wrote:
> On 31/07/21 00:04, Peter Xu wrote:
> > Use this file to dump rmap statistic information. The statistic is done by
> > calculating the rmap count and the result is log-2-based.
> >
> > An example output of this looks like (idle 6GB guest, right after boot linux):
> >
> > Rmap_Count: 0 1 2-3 4-7 8-15 16-31 32-63 64-127 128-255 256-511 512-1023
> > Level=4K: 3086676 53045 12330 1272 502 121 76 2 0 0 0
> > Level=2M: 5947 231 0 0 0 0 0 0 0 0 0
> > Level=1G: 32 0 0 0 0 0 0 0 0 0 0
> >
> > Signed-off-by: Peter Xu <peterx@redhat.com>
> > ---
> > arch/x86/kvm/x86.c | 113 +++++++++++++++++++++++++++++++++++++++++++++
> > 1 file changed, 113 insertions(+)
>
> This should be in debugfs.c, meaning that the kvm_mmu_slot_lpages() must be
> in a header. I think mmu.h should do, let me take a look and I can post
> myself a v4 of these debugfs parts.

Thanks, Paolo!

--
Peter Xu

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