Jianyong Wu 6dbc13627a devices: Emulate debug I/O based on pl011 ... To emulate debug I/O port on arm64, we need trap from guest to VMM. Generally, there are 3 ways to go: 1) execute a privilege intruction like "wfi"; 2) access a system register; 3) access device MMIO region; However, 1) and 2) often handled in kvm, thus 3) it's the choice. There maybe lots of repeated work and enlarge the size of clh to develop a new device, so it's better to reuse the current device. Luckily, I find that pl011 is the eariest device initialized in kernel and, there is reserved region in it which we can reuse for emulating debug I/O. Signed-off-by: Jianyong Wu <jianyong.wu@arm.com>		2022-03-23 18:25:48 +08:00
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src	devices: Emulate debug I/O based on pl011	2022-03-23 18:25:48 +08:00
Cargo.toml	build: bump libc from 0.2.120 to 0.2.121	2022-03-20 12:25:30 +00:00