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hypervisor, vmm: Abstract the interfaces to start/stop dirty log

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Following KVM interfaces, the `hypervisor` crate now provides interfaces
to start/stop the dirty pages logging on a per region basis, and asks
its users (e.g. the `vmm` crate) to iterate over the regions that needs
dirty pages log. MSHV only has a global control to start/stop dirty
pages log on all regions at once.

This patch refactors related APIs from the `hypervisor` crate to provide
a global control to start/stop dirty pages log (following MSHV's
behaviors), and keeps tracking the regions need dirty pages log for
KVM. It avoids leaking hypervisor-specific behaviors out of the
`hypervisor` crate.

Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit is contained in:
Bo Chen
2021-07-26 12:33:02 -07:00
committed by Bo Chen
parent 2723995cfa
commit e7c9954dc1
4 changed files with 89 additions and 96 deletions
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16
hypervisor/src/vm.rs
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@@ -281,21 +281,9 @@ pub trait Vm: Send + Sync {
/// Set the VM state
fn set_state(&self, state: VmState) -> Result<()>;
/// Start logging dirty pages
fn start_dirty_log(
&self,
slot: u32,
guest_phys_addr: u64,
memory_size: u64,
userspace_addr: u64,
) -> Result<()>;
fn start_dirty_log(&self) -> Result<()>;
/// Stop logging dirty pages
fn stop_dirty_log(
&self,
slot: u32,
guest_phys_addr: u64,
memory_size: u64,
userspace_addr: u64,
) -> Result<()>;
fn stop_dirty_log(&self) -> Result<()>;
/// Get dirty pages bitmap
fn get_dirty_log(&self, slot: u32, memory_size: u64) -> Result<Vec<u64>>;
#[cfg(feature = "tdx")]