Method add_uefi_flash

vmm/src/memory_manager.rs:1471–1501

(&mut self)

    #[cfg(any(target_arch = "aarch64", target_arch = "riscv64"))]
    pub fn add_uefi_flash(&mut self) -> Result<(), Error> {
        // The UEFI binary requires a flash device at address 0.
        // 4 MiB memory is mapped to simulate the flash.
        let uefi_mem_slot = self.allocate_memory_slot();
        let uefi_region = GuestRegionMmap::new(
            MmapRegion::new(arch::layout::UEFI_SIZE as usize).unwrap(),
            arch::layout::UEFI_START,
        )
        .unwrap();
        const _: () = assert!(core::mem::size_of::<usize>() == core::mem::size_of::<u64>());

        // SAFETY: guaranteed by GuestRegionMmap
        unsafe {
            self.vm
                .create_user_memory_region(
                    uefi_mem_slot,
                    uefi_region.start_addr().raw_value(),
                    uefi_region.len() as usize,
                    uefi_region.as_ptr(),
                    false,
                    false,
                )
                .map_err(Error::CreateUefiFlash)?;
        }
        let uefi_flash =
            GuestMemoryAtomic::new(GuestMemoryMmap::from_regions(vec![uefi_region]).unwrap());

        self.uefi_flash = Some(uefi_flash);

        Ok(())
    }

    #[allow(clippy::too_many_arguments)]
    pub fn new(