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hypervisor: Add support for setting KVM identity map

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Extending the Vm trait with set_identity_map_address() in order to
expose this ioctl to the VMM.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
(cherry picked from commit c452471c4e)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Sebastien Boeuf
2021-12-04 14:15:41 +01:00
committed by Rob Bradford
parent 902adabbbd
commit 42e8e2b933
4 changed files with 27 additions and 0 deletions
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8
hypervisor/src/vm.rs
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@@ -58,6 +58,11 @@ pub enum HypervisorVmError {
#[error("Failed to create Vcpu: {0}")]
CreateVcpu(#[source] anyhow::Error),
///
/// Identity map address error
///
#[error("Failed to set identity map address: {0}")]
SetIdentityMapAddress(#[source] anyhow::Error),
///
/// TSS address error
///
#[error("Failed to set TSS address: {0}")]
@@ -217,6 +222,9 @@ pub type Result<T> = std::result::Result<T, HypervisorVmError>;
/// This crate provides a hypervisor-agnostic interfaces for Vm
///
pub trait Vm: Send + Sync {
#[cfg(target_arch = "x86_64")]
/// Sets the address of the one-page region in the VM's address space.
fn set_identity_map_address(&self, address: u64) -> Result<()>;
#[cfg(target_arch = "x86_64")]
/// Sets the address of the three-page region in the VM's address space.
fn set_tss_address(&self, offset: usize) -> Result<()>;