Asahi Linux: m1n1 Hypervisor recap

After 13 episodes of the hypervisor series, it boots macOS! Let's go over the hypervisor implementation bit by bit and recap how it all works together.

0:00:00 Intro
0:01:20 Why a hypervisor?
0:02:40 How MMIO works
0:06:45 Reverse engineering hardware
0:13:57 The Apple Device Tree
0:17:08 Virtualization on ARMv8-A
0:20:20 The demo effect...
0:26:20 Non-hypervisor EL1
0:28:54 ARM Hypervisor features
0:34:18 HV demo
0:41:35 HV overview
0:42:35 Initialization / startup
0:46:39 Exception vectors
0:55:02 m1n1 proxy & callback flow
1:00:54 Synchronous exceptions
1:03:44 System register emulation
1:11:39 Virtual memory
1:16:18 Page tables
1:30:06 Translation & table walks
1:37:49 Data aborts (page faults)
1:45:28 MMIO trace events
1:48:15 Load/store emulation
1:52:11 HV watchdog
1:57:55 HV timer & interrupt handling
2:00:58 The VM timer problem
2:05:18 Virtual UART
2:07:20 The Python side (hv.py)
2:09:27 Guarded mode (GXF)
2:11:24 hv.py init
2:24:59 hv.py event handling
2:30:00 hv.py EL1 exception tracing hack
2:31:58 Using the HV to RE the GPU
2:34:18 hv.py main exception handler
2:36:52 hv.py MMIO tracing (GPU demo)
2:42:19 Comments / Q&A
2:43:08 The VM timer problem (redux)
2:46:35 Linux big.LITTLE scheduling
2:47:52 Next steps for HV
2:50:05 Getting started with RE
2:51:40 Whoops, I crashed DCP
2:54:15 Coprocessors and firmware
2:59:25 On Devicetrees
3:00:45 m1n1 on non-Apple devices
3:03:28 Patreon & support
3:05:58 Origins of m1n1
3:07:24 iBoot2/Firmware setup & updates
3:09:25 Devicetree variants
3:09:58 Windows on M1
3:11:54 M1 OS bootrstrap design
3:16:45 x86_64 emulation
3:21:44 Back to the crashed DCP

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