feat: make hermit-entry optional

[mkroening]

This PR makes hermit-entry optional in preparation for #2366.

Depends on:

• fix(x86_64/uefi): unmap stack on drop #2591
• feat(x86_64/uhyve): drop support for non-FDT TSC frequencies #2592
• fix(mm): don't account for kernel executable memory twice #2593
• refactor(aarch64): rename start.s to exceptions.s #2594
• refactor(fs/uhyve): don't import env::fdt() #2595
• refactor(arch): extract hermit-entry-specific start code #2596
• refactor(x86_64/paging): extract UEFI check out of make_p4_writable() #2597
• fix: don't use boot info in SMP start #2602

This is needed for:

• feat(x86_64): add PVH boot support #2366

[github-actions]

Benchmark Results

Details

Benchmark	Current: f6316e8	Previous: 2e23902	Performance Ratio
startup_benchmark Build Time	82.51 s	80.34 s	1.03 ❗
startup_benchmark File Size	0.77 MB	0.80 MB	0.97 ❗
Startup Time - 1 core	0.75 s (±0.02 s)	0.75 s (±0.02 s)	1.01
Startup Time - 2 cores	0.76 s (±0.02 s)	0.74 s (±0.02 s)	1.03
Startup Time - 4 cores	0.77 s (±0.01 s)	0.74 s (±0.02 s)	1.04 ❗
multithreaded_benchmark Build Time	83.75 s	82.11 s	1.02 ❗
multithreaded_benchmark File Size	0.87 MB	0.86 MB	1.02 ❗
Multithreaded Pi Efficiency - 2 Threads	87.34 % (±8.15 %)	85.89 % (±6.61 %)	1.02
Multithreaded Pi Efficiency - 4 Threads	43.48 % (±2.52 %)	43.43 % (±2.56 %)	1.00
Multithreaded Pi Efficiency - 8 Threads	25.30 % (±1.45 %)	25.76 % (±1.53 %)	0.98
micro_benchmarks Build Time	84.48 s	80.40 s	1.05 ❗
micro_benchmarks File Size	0.87 MB	0.86 MB	1.02 ❗
Scheduling time - 1 thread	65.55 ticks (±2.94 ticks)	62.65 ticks (±4.06 ticks)	1.05
Scheduling time - 2 threads	35.27 ticks (±4.52 ticks)	34.08 ticks (±4.10 ticks)	1.03
Micro - Time for syscall (getpid)	4.32 ticks (±0.67 ticks)	3.45 ticks (±0.58 ticks)	1.25
Memcpy speed - (built_in) block size 4096	82999.83 MByte/s (±57487.88 MByte/s)	82448.38 MByte/s (±56997.13 MByte/s)	1.01
Memcpy speed - (built_in) block size 1048576	30390.39 MByte/s (±24452.16 MByte/s)	30585.98 MByte/s (±24707.84 MByte/s)	0.99
Memcpy speed - (built_in) block size 16777216	26649.67 MByte/s (±22065.33 MByte/s)	26340.06 MByte/s (±21720.96 MByte/s)	1.01
Memset speed - (built_in) block size 4096	83058.95 MByte/s (±57525.38 MByte/s)	82292.76 MByte/s (±56891.50 MByte/s)	1.01
Memset speed - (built_in) block size 1048576	31143.40 MByte/s (±24900.30 MByte/s)	31323.85 MByte/s (±25145.86 MByte/s)	0.99
Memset speed - (built_in) block size 16777216	27415.87 MByte/s (±22548.82 MByte/s)	27104.68 MByte/s (±22209.94 MByte/s)	1.01
Memcpy speed - (rust) block size 4096	73599.96 MByte/s (±51275.35 MByte/s)	74097.96 MByte/s (±51811.44 MByte/s)	0.99
Memcpy speed - (rust) block size 1048576	30176.52 MByte/s (±24443.59 MByte/s)	30361.60 MByte/s (±24602.37 MByte/s)	0.99
Memcpy speed - (rust) block size 16777216	26923.00 MByte/s (±22288.65 MByte/s)	27625.34 MByte/s (±22806.88 MByte/s)	0.97
Memset speed - (rust) block size 4096	74109.37 MByte/s (±51654.43 MByte/s)	74373.47 MByte/s (±51976.48 MByte/s)	1.00
Memset speed - (rust) block size 1048576	30924.75 MByte/s (±24883.31 MByte/s)	31110.89 MByte/s (±25033.24 MByte/s)	0.99
Memset speed - (rust) block size 16777216	27664.49 MByte/s (±22741.59 MByte/s)	28386.93 MByte/s (±23265.03 MByte/s)	0.97
alloc_benchmarks Build Time	81.35 s	74.76 s	1.09 ❗
alloc_benchmarks File Size	0.85 MB	0.87 MB	0.97 ❗
Allocations - Allocation success	91.34 %	91.31 %	1.00 ❗
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	61.54 %	61.44 %	1.00 ❗
Allocations - Average Allocation time	2559.53 Ticks (±802.67 Ticks)	5860.58 Ticks (±98.43 Ticks)	0.44 ❗
Allocations - Average Allocation time (no fail)	3596.56 Ticks (±691.85 Ticks)	6554.81 Ticks (±92.86 Ticks)	0.55 ❗
Allocations - Average Deallocation time	701.32 Ticks (±124.75 Ticks)	1805.01 Ticks (±250.35 Ticks)	0.39 ❗
mutex_benchmark Build Time	81.62 s	79.82 s	1.02 ❗
mutex_benchmark File Size	0.87 MB	0.86 MB	1.02 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	12.08 ns (±0.34 ns)	12.10 ns (±0.41 ns)	1.00
Mutex Stress Test Average Time per Iteration - 2 Threads	40.86 ns (±2.04 ns)	40.26 ns (±1.68 ns)	1.01

This comment was automatically generated by workflow using github-action-benchmark.