Frederick Mayle b488863647 devices: SnapshotReader/Writer abstraction + new snapshot format ... Instead of building up one big json value, we pass around a "writer" object that allows writing out fragments of the snapshot and nested namespacing. The snapshot fragments can use different serialize formats if desired, e.g. the RAM snapshot uses a raw binary file. Snapshot directory contents: 213 .../bus0/ACPIPMResource-0 299 .../bus0/cmos-0 2 .../bus0/i8042-0 542 .../bus0/pci-config-io-port-0 234 .../bus0/serial-0 234 .../bus0/serial-1 234 .../bus0/serial-2 235 .../bus0/serial-3 536 .../bus1/pci-config-mmio-0 3.5K .../bus1/pcivirtio-balloon-0 6.1K .../bus1/pcivirtio-block-0 1.7K .../bus1/pcivirtio-rng-0 536 .../bus1/pci-virtual-config-mmio-0 569 .../bus1/PvPanic-0 5.3K .../irqchip 8.0G .../mem 52 .../mem_metadata 6.5K .../vcpu/vcpu0 6.6K .../vcpu/vcpu1 6.5K .../vcpu/vcpu2 6.5K .../vcpu/vcpu3 For now, the new abstractions are not used in `BusDevice` or any layers beyond `BusDevice`, so each device is still a monolithic JSON file. `PciConfigIo::debug_label` was modified so that it can't change at runtime. Based on some light testing, this seems to reduce the snapshot time for a particular ubuntu VM config from 14s to 13s. BUG=b:268093674 Change-Id: Ic16980629ff9321bee19f56f6e8e50f214492a7d Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4739910 Commit-Queue: Frederick Mayle <fmayle@google.com> Reviewed-by: Elie Kheirallah <khei@google.com> Reviewed-by: Daniel Verkamp <dverkamp@chromium.org> Reviewed-by: Noah Gold <nkgold@google.com>		2024-01-16 21:42:29 +00:00
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src	devices: SnapshotReader/Writer abstraction + new snapshot format	2024-01-16 21:42:29 +00:00
Cargo.toml	Upgrade gdbstub and gdbstub_arch.	2024-01-04 02:06:22 +00:00