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hypervisor: Add control for dirty page logging

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When creating a userspace mapping provide a control for enabling the
logging of dirty pages.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford
2020-11-11 18:16:39 +00:00
parent b399287430
commit 8baa244ec1
6 changed files with 19 additions and 2 deletions
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11
hypervisor/src/kvm/mod.rs
View File

@@ -70,7 +70,8 @@ use std::mem;
pub use kvm_bindings;
pub use kvm_bindings::{
kvm_create_device, kvm_device_type_KVM_DEV_TYPE_VFIO, kvm_irq_routing, kvm_irq_routing_entry,
kvm_userspace_memory_region, KVM_IRQ_ROUTING_MSI, KVM_MEM_READONLY, KVM_MSI_VALID_DEVID,
kvm_userspace_memory_region, KVM_IRQ_ROUTING_MSI, KVM_MEM_LOG_DIRTY_PAGES, KVM_MEM_READONLY,
KVM_MSI_VALID_DEVID,
};
pub use kvm_ioctls;
pub use kvm_ioctls::{Cap, Kvm};
@@ -255,13 +256,19 @@ impl vm::Vm for KvmVm {
memory_size: u64,
userspace_addr: u64,
readonly: bool,
log_dirty_pages: bool,
) -> MemoryRegion {
MemoryRegion {
slot,
guest_phys_addr,
memory_size,
userspace_addr,
flags: if readonly { KVM_MEM_READONLY } else { 0 },
flags: if readonly { KVM_MEM_READONLY } else { 0 }
| if log_dirty_pages {
KVM_MEM_LOG_DIRTY_PAGES
} else {
0
},
}
}
///

1
hypervisor/src/vm.rs
View File

@@ -189,6 +189,7 @@ pub trait Vm: Send + Sync {
memory_size: u64,
userspace_addr: u64,
readonly: bool,
log_dirty_pages: bool,
) -> MemoryRegion;
/// Creates/modifies a guest physical memory slot.
fn set_user_memory_region(&self, user_memory_region: MemoryRegion) -> Result<()>;