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HvCallDepositMemory adds physical memory pages to a partition's memory pool. This hypercall allows a parent partition to provide additional memory resources to the hypervisor, expanding its available memory for allocation on behalf of the partition.
Usage Notes
- This is a REP hypercall: the
RepCountspecifies number of page elements inGpaPageList;ElementsProcessed(implicit output) indicates progress for retries.
Interface
HV_STATUS
HvCallDepositMemory(
_In_ HV_PARTITION_ID PartitionId,
_In_ const HV_GPA_PAGE_NUMBER GpaPageList[] // Reads RepCount elements
);
Call Code
0x0048 (Rep)
Input Parameters
| Name | Offset | Size | Information Provided |
|---|---|---|---|
| PartitionId | 0 | 8 | Target partition identifier. |
| GpaPageList | 8 | Var | Array of page numbers; element count = RepCount. |
Element List
Each element of GpaPageList is one HV_GPA_PAGE_NUMBER (8 bytes). The hypercall control's RepCount specifies how many elements to consume. The hypervisor deposits pages in order until all are processed or a failure/limit condition is encountered. ElementsProcessed (from the hypercall result control) reports how many entries from the caller's array were successfully deposited.