MshvHvcall

hcl::ioctl

Struct MshvHvcall 

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pub struct MshvHvcall(/* private fields */);
Expand description

The /dev/mshv_hvcall device for issuing hypercalls directly to the hypervisor.

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impl MshvHvcall

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pub fn new() -> Result<Self, Error>

Opens the device.

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pub fn set_allowed_hypercalls(&self, codes: &[HypercallCode])

Set allowed hypercalls.

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pub fn accept_gpa_pages( &self, range: MemoryRange, memory_type: AcceptMemoryType, ) -> Result<(), AcceptPagesError>

Accepts VTL 0 pages with no host visibility.

[HypercallCode::HvCallAcceptGpaPages] must be allowed.

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pub fn modify_gpa_visibility( &self, host_visibility: HostVisibilityType, gpns: &[u64], ) -> Result<(), (HvError, usize)>

Modifies the host visibility of the given pages.

[HypercallCode::HvCallModifySparseGpaPageHostVisibility] must be allowed.

Returns on error, the hypervisor error and the number of pages processed.

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pub fn modify_vtl_protection_mask( &self, range: MemoryRange, map_flags: HvMapGpaFlags, target_vtl: HvInputVtl, ) -> Result<(), ApplyVtlProtectionsError>

Sets the VTL protection mask for the specified memory range.

[HypercallCode::HvCallModifyVtlProtectionMask] must be allowed.

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pub fn mmio_read(&self, gpa: u64, data: &mut [u8]) -> Result<(), HvError>

Invokes the HvCallMemoryMappedIoRead hypercall

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pub fn mmio_write(&self, gpa: u64, data: &[u8]) -> Result<(), HvError>

Invokes the HvCallMemoryMappedIoWrite hypercall

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pub fn vbs_vm_call_report( &self, report_data: &[u8], ) -> Result<[u8; 2048], HvError>

Request a VBS VM report from the host VSM.

§Arguments
  • report_data: The data to include in the report.

Returns a result containing the report or an error.

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impl Debug for MshvHvcall

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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