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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<()>;

4
pci/src/vfio.rs
View File

@ -561,6 +561,7 @@ impl VfioPciDevice {
mmap_size as u64,
host_addr as u64,
false,
false,
);
vm.set_user_memory_region(mem_region)
@ -590,6 +591,7 @@ impl VfioPciDevice {
0,
host_addr as u64,
false,
false,
);
if let Err(e) = self.vm.set_user_memory_region(r) {
@ -1012,6 +1014,7 @@ impl PciDevice for VfioPciDevice {
0,
host_addr as u64,
false,
false,
);
self.vm
@ -1025,6 +1028,7 @@ impl PciDevice for VfioPciDevice {
mmap_size as u64,
host_addr as u64,
false,
false,
);
self.vm

2
vmm/src/device_manager.rs
View File

@ -612,6 +612,7 @@ impl DeviceRelocation for AddressManager {
0,
shm_regions.host_addr,
false,
false,
);
self.vm.set_user_memory_region(mem_region).map_err(|e| {
@ -628,6 +629,7 @@ impl DeviceRelocation for AddressManager {
shm_regions.len,
shm_regions.host_addr,
false,
false,
);
self.vm.set_user_memory_region(mem_region).map_err(|e| {

2
vmm/src/memory_manager.rs
View File

@ -1115,6 +1115,7 @@ impl MemoryManager {
memory_size,
userspace_addr,
readonly,
false,
);
self.vm
@ -1168,6 +1169,7 @@ impl MemoryManager {
0, /* memory_size -- using 0 removes this slot */
userspace_addr,
false, /* readonly -- don't care */
false, /* log dirty */
);
self.vm

1
vmm/src/vm.rs
View File

@ -2131,6 +2131,7 @@ pub fn test_vm() {
region.len() as u64,
region.as_ptr() as u64,
false,
false,
);
vm.set_user_memory_region(mem_region)