# Re: \[PATCH v12 13/45\] KVM: guest\_memfd: Pass mapping type filter to invalidation helper

- From: Binbin Wu \<hidden\>
- Date: 2026-09-02 06:02:51 
- List: linux-trace-kernel
- Page: https://ratatoskr.run/linux-trace-kernel/2026/09/17495751
- Thread: https://ratatoskr.run/kvm/2026/08/17480489/t.md

```text
On 8/31/2026 8:25 AM, Ackerley Tng via B4 Relay wrote:
> From: Ackerley Tng <redacted>
> 
> Accept the mapping type filter as a parameter in the invalidation start
> helper instead of querying it internally. This allows callers to specify
> which mappings (shared, private, or both) should be invalidated.
> 
> In the next patch, the conversion process will use this new parameter to
> invalidate mappings only when they're different from the target state of
> the conversion, i.e. invalidate only shared mappings on a shared to private
> conversion and not both.
> 
> No functional change intended.
> 
> Signed-off-by: Ackerley Tng <redacted>

Reviewed-by: Binbin Wu <redacted>
```