Identity-mapped pagetable support (UEFI boot) #1816

Job	Run time
Check docs	33s
Build	1m 16s
Check	1m 7s
Format	20s
Clippy	1m 4s
Run Hermit for Rust (x86_64 + kvm)	1h 7m 26s
Run (x86_64, rusty_demo, none, dev)	2m 18s
Test	1m 45s
Run (x86_64, rusty_demo, none, release)	1m 51s
Run (x86_64, httpd, virtio-net-pci, dev)	2m 18s
Run (x86_64, httpd, virtio-net-pci, release)	2m 20s
Run (x86_64, httpd, rtl8139, dev)	2m 17s
Run (x86_64, httpd, rtl8139, release)	2m 17s
Run (x86_64, testudp, virtio-net-pci, dev)	57s
Run (x86_64, testudp, virtio-net-pci, release)	1m 39s
Run (x86_64, testudp, rtl8139, dev)	2m 16s
Run (x86_64, testudp, rtl8139, release)	2m 20s
Run (x86_64, hello_world, none, dev)	2m 16s
Run (x86_64, hello_world, none, release)	2m 16s
Run (aarch64, rusty_demo, none, dev)	2m 0s
Run (aarch64, rusty_demo, none, release)	2m 19s
Run (aarch64, httpd, virtio-net-pci, dev)	2m 10s
Run (aarch64, httpd, virtio-net-pci, release)	2m 21s
Run (aarch64, testudp, virtio-net-pci, dev)	2m 7s
Run (aarch64, testudp, virtio-net-pci, release)	2m 20s
	1h 51m 53s

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