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Re: [XENBUS PATCH 1/2] Use Windows 10 APIs to inflate/deflate balloon.

To: Tu Dinh <ngoc-tu.dinh@xxxxxxxxxx>, win-pv-devel@xxxxxxxxxxxxxxxxxxxx
From: Paul Durrant <xadimgnik@xxxxxxxxx>
Date: Wed, 11 Jun 2025 12:11:18 +0100
Cc: Owen Smith <owen.smith@xxxxxxxxx>
Delivery-date: Wed, 11 Jun 2025 11:11:22 +0000
List-id: Developer list for the Windows PV Drivers subproject <win-pv-devel.lists.xenproject.org>

On 09/06/2025 15:06, Tu Dinh wrote:

Windows 10 provides MM_ALLOCATE_AND_HOT_REMOVE to remove pages from
the physical memory pool. The removed pages can be added back with
MmAddPhysicalMemory.

Implement balloon inflation using calls to MmAddPhysicalMemory on
contiguous PFN ranges.

Can you put something in the commit comment to say why this is animprovement?

References:
- [XENBUS PATCH 1/2] Use Windows 10 APIs to inflate/deflate balloon.
  - From: Tu Dinh

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