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>

Modifies the host visibility of the given pages.

HypercallCode::HvCallModifySparseGpaPageHostVisibility must be allowed.

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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 get_vp_register_for_vtl( &self, vtl: HvInputVtl, name: HvX64RegisterName, ) -> Result<HvRegisterValue, Error>

Get a single VP register for the given VTL via hypercall. Only a select set of registers are supported; others will cause a panic.

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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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