Fix memory unmap for Risc/ARM

[zyuiop]

When testing #2462 on ARM/Risc, I encountered page faults when trying to map pages.

Turns out that the previous unmapping was wrongly recorded.

This PR fixes that.

[github-actions]

Benchmark Results

Details

Benchmark	Current: 2274e53	Previous: 28c7089	Performance Ratio
startup_benchmark Build Time	108.73 s	115.28 s	0.94 ❗
startup_benchmark File Size	0.77 MB	0.77 MB	1.00 ❗
Startup Time - 1 core	0.94 s (±0.03 s)	1.00 s (±0.03 s)	0.94 ❗
Startup Time - 2 cores	1.00 s (±0.05 s)	1.04 s (±0.05 s)	0.96
Startup Time - 4 cores	0.99 s (±0.03 s)	1.00 s (±0.06 s)	0.99
multithreaded_benchmark Build Time	110.66 s	118.33 s	0.94 ❗
multithreaded_benchmark File Size	0.87 MB	0.87 MB	1.00 ❗
Multithreaded Pi Efficiency - 2 Threads	91.29 % (±14.27 %)	92.34 % (±11.70 %)	0.99
Multithreaded Pi Efficiency - 4 Threads	45.05 % (±6.24 %)	45.83 % (±5.87 %)	0.98
Multithreaded Pi Efficiency - 8 Threads	24.41 % (±3.55 %)	25.71 % (±3.50 %)	0.95
micro_benchmarks Build Time	92.74 s	96.08 s	0.97 ❗
micro_benchmarks File Size	0.88 MB	0.88 MB	1.00 ❗
Scheduling time - 1 thread	73.58 ticks (±3.38 ticks)	73.85 ticks (±3.74 ticks)	1.00
Scheduling time - 2 threads	40.44 ticks (±4.67 ticks)	41.46 ticks (±4.37 ticks)	0.98
Micro - Time for syscall (getpid)	3.10 ticks (±0.18 ticks)	3.08 ticks (±0.19 ticks)	1.01
Memcpy speed - (built_in) block size 4096	75336.75 MByte/s (±52011.27 MByte/s)	73208.48 MByte/s (±50616.82 MByte/s)	1.03
Memcpy speed - (built_in) block size 1048576	29539.13 MByte/s (±24273.57 MByte/s)	29392.18 MByte/s (±24125.47 MByte/s)	1.00
Memcpy speed - (built_in) block size 16777216	26883.65 MByte/s (±22213.71 MByte/s)	23751.74 MByte/s (±19605.56 MByte/s)	1.13
Memset speed - (built_in) block size 4096	75218.29 MByte/s (±51933.35 MByte/s)	73313.38 MByte/s (±50689.78 MByte/s)	1.03
Memset speed - (built_in) block size 1048576	30307.09 MByte/s (±24710.66 MByte/s)	30169.43 MByte/s (±24587.38 MByte/s)	1.00
Memset speed - (built_in) block size 16777216	27317.35 MByte/s (±22399.67 MByte/s)	24402.29 MByte/s (±20008.02 MByte/s)	1.12
Memcpy speed - (rust) block size 4096	64138.59 MByte/s (±44698.11 MByte/s)	66427.37 MByte/s (±46490.49 MByte/s)	0.97
Memcpy speed - (rust) block size 1048576	29497.97 MByte/s (±24292.64 MByte/s)	29425.11 MByte/s (±24175.79 MByte/s)	1.00
Memcpy speed - (rust) block size 16777216	26896.82 MByte/s (±22263.40 MByte/s)	24403.77 MByte/s (±20179.96 MByte/s)	1.10
Memset speed - (rust) block size 4096	64646.11 MByte/s (±45043.70 MByte/s)	66262.32 MByte/s (±46403.75 MByte/s)	0.98
Memset speed - (rust) block size 1048576	30302.81 MByte/s (±24750.01 MByte/s)	30172.11 MByte/s (±24599.55 MByte/s)	1.00
Memset speed - (rust) block size 16777216	27379.65 MByte/s (±22473.51 MByte/s)	25069.95 MByte/s (±20590.63 MByte/s)	1.09
alloc_benchmarks Build Time	93.05 s	91.43 s	1.02 ❗
alloc_benchmarks File Size	0.85 MB	0.85 MB	1.00 ❗
Allocations - Allocation success	100.00 %	100.00 %	1
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	100.00 %	100.00 %	1
Allocations - Average Allocation time	4653.99 Ticks (±64.30 Ticks)	4633.96 Ticks (±62.19 Ticks)	1.00
Allocations - Average Allocation time (no fail)	4653.99 Ticks (±64.30 Ticks)	4633.96 Ticks (±62.19 Ticks)	1.00
Allocations - Average Deallocation time	884.16 Ticks (±93.40 Ticks)	683.28 Ticks (±99.25 Ticks)	1.29 ❗
mutex_benchmark Build Time	92.44 s	90.68 s	1.02 ❗
mutex_benchmark File Size	0.88 MB	0.88 MB	1.00 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	14.12 ns (±0.86 ns)	13.82 ns (±0.84 ns)	1.02
Mutex Stress Test Average Time per Iteration - 2 Threads	18.00 ns (±2.43 ns)	14.48 ns (±0.75 ns)	1.24 ❗

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