Re: [PATCH v6 0/7] mshv: Debugfs interface for mshv_root

[Wei Liu]

On Wed, Jan 28, 2026 at 10:11:39AM -0800, Nuno Das Neves wrote:
> Expose hypervisor, logical processor, partition, and virtual processor
> statistics via debugfs. These are provided by mapping 'stats' pages via
> hypercall.
> 
> Patch #1: Update hv_call_map_stats_page() to return success when
>           HV_STATS_AREA_PARENT is unavailable, which is the case on some
>           hypervisor versions, where it can fall back to HV_STATS_AREA_SELF
> Patch #2: Use struct hv_stats_page pointers instead of void *
> Patch #3: Make mshv_vp_stats_map/unmap() more flexible to use with debugfs
>           code
> Patch #4: Always map vp stats page regardless of scheduler, to reuse in
>           debugfs
> Patch #5: Change to hv_stats_page definition and
>           VpRootDispatchThreadBlocked
> Patch #6: Introduce the definitions needed for the various stats pages
> Patch #7: Add mshv_debugfs.c, and integrate it with the mshv_root driver to
>           expose the partition and VP stats.
> 
[...]
> 
>  drivers/hv/Makefile                |   1 +
>  drivers/hv/mshv_debugfs.c          | 726 +++++++++++++++++++++++++++++
>  drivers/hv/mshv_debugfs_counters.c | 490 +++++++++++++++++++
>  drivers/hv/mshv_root.h             |  49 +-
>  drivers/hv/mshv_root_hv_call.c     |  64 ++-
>  drivers/hv/mshv_root_main.c        | 140 +++---
>  include/hyperv/hvhdk.h             |   7 +
>  7 files changed, 1412 insertions(+), 65 deletions(-)
>  create mode 100644 drivers/hv/mshv_debugfs.c
>  create mode 100644 drivers/hv/mshv_debugfs_counters.c
> 

Applied to hyperv-next. Thank you!