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vmm: Add convenience API for getting slots to FDs mapping

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This will be used for sending those file descriptors for local
migration.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit is contained in:
Rob Bradford 2022-01-13 10:17:30 +00:00
parent 1676fffaad
commit 715a7d9065
1 changed files with 16 additions and 0 deletions
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16
vmm/src/memory_manager.rs
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@ -1813,6 +1813,22 @@ impl MemoryManager {
next_hotplug_slot: self.next_hotplug_slot, next_hotplug_slot: self.next_hotplug_slot,
} }
} }
pub fn memory_slot_fds(&self) -> HashMap<u32, RawFd> {
let mut memory_slot_fds = HashMap::new();
for guest_ram_mapping in &self.guest_ram_mappings {
let slot = guest_ram_mapping.slot;
let guest_memory = self.guest_memory.memory();
let file = guest_memory
.find_region(GuestAddress(guest_ram_mapping.gpa))
.unwrap()
.file_offset()
.unwrap()
.file();
memory_slot_fds.insert(slot, file.as_raw_fd());
}
memory_slot_fds
}
} }
#[cfg(feature = "acpi")] #[cfg(feature = "acpi")]