fix(riscv64/mmio): avoid warning on expected empty virtio MMIO slots

[mkroening]

No description provided.

[github-actions]

Benchmark Results

Details

Benchmark	Current: c1f0db9	Previous: 2e23902	Performance Ratio
startup_benchmark Build Time	95.72 s	80.34 s	1.19 ❗
startup_benchmark File Size	0.78 MB	0.80 MB	0.98 ❗
Startup Time - 1 core	0.76 s (±0.01 s)	0.75 s (±0.02 s)	1.02
Startup Time - 2 cores	0.77 s (±0.01 s)	0.74 s (±0.02 s)	1.05 ❗
Startup Time - 4 cores	0.78 s (±0.02 s)	0.74 s (±0.02 s)	1.05 ❗
multithreaded_benchmark Build Time	94.66 s	82.11 s	1.15 ❗
multithreaded_benchmark File Size	0.88 MB	0.86 MB	1.03 ❗
Multithreaded Pi Efficiency - 2 Threads	64.71 % (±6.51 %)	85.89 % (±6.61 %)	0.75 ❗
Multithreaded Pi Efficiency - 4 Threads	40.47 % (±2.90 %)	43.43 % (±2.56 %)	0.93
Multithreaded Pi Efficiency - 8 Threads	19.74 % (±1.75 %)	25.76 % (±1.53 %)	0.77 ❗
micro_benchmarks Build Time	227.04 s	80.40 s	2.82 ❗
micro_benchmarks File Size	0.89 MB	0.86 MB	1.03 ❗
Scheduling time - 1 thread	187.72 ticks (±34.23 ticks)	62.65 ticks (±4.06 ticks)	3.00 ❗
Scheduling time - 2 threads	102.42 ticks (±19.70 ticks)	34.08 ticks (±4.10 ticks)	3.01 ❗
Micro - Time for syscall (getpid)	11.05 ticks (±5.42 ticks)	3.45 ticks (±0.58 ticks)	3.20 ❗
Memcpy speed - (built_in) block size 4096	54285.53 MByte/s (±38515.13 MByte/s)	82448.38 MByte/s (±56997.13 MByte/s)	0.66
Memcpy speed - (built_in) block size 1048576	13385.82 MByte/s (±10985.97 MByte/s)	30585.98 MByte/s (±24707.84 MByte/s)	0.44
Memcpy speed - (built_in) block size 16777216	8739.08 MByte/s (±7498.77 MByte/s)	26340.06 MByte/s (±21720.96 MByte/s)	0.33
Memset speed - (built_in) block size 4096	54720.99 MByte/s (±38841.19 MByte/s)	82292.76 MByte/s (±56891.50 MByte/s)	0.66
Memset speed - (built_in) block size 1048576	13617.56 MByte/s (±11095.72 MByte/s)	31323.85 MByte/s (±25145.86 MByte/s)	0.43
Memset speed - (built_in) block size 16777216	8929.19 MByte/s (±7605.29 MByte/s)	27104.68 MByte/s (±22209.94 MByte/s)	0.33
Memcpy speed - (rust) block size 4096	49688.54 MByte/s (±36098.44 MByte/s)	74097.96 MByte/s (±51811.44 MByte/s)	0.67
Memcpy speed - (rust) block size 1048576	14470.52 MByte/s (±12396.89 MByte/s)	30361.60 MByte/s (±24602.37 MByte/s)	0.48
Memcpy speed - (rust) block size 16777216	8840.74 MByte/s (±7496.66 MByte/s)	27625.34 MByte/s (±22806.88 MByte/s)	0.32
Memset speed - (rust) block size 4096	50181.94 MByte/s (±36478.87 MByte/s)	74373.47 MByte/s (±51976.48 MByte/s)	0.67
Memset speed - (rust) block size 1048576	14762.51 MByte/s (±12575.18 MByte/s)	31110.89 MByte/s (±25033.24 MByte/s)	0.47
Memset speed - (rust) block size 16777216	8868.75 MByte/s (±7505.62 MByte/s)	28386.93 MByte/s (±23265.03 MByte/s)	0.31
alloc_benchmarks Build Time	218.45 s	74.76 s	2.92 ❗
alloc_benchmarks File Size	0.86 MB	0.87 MB	0.98 ❗
Allocations - Allocation success	91.38 %	91.31 %	1.00 ❗
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	61.60 %	61.44 %	1.00 ❗
Allocations - Average Allocation time	28335.54 Ticks (±1915.98 Ticks)	5860.58 Ticks (±98.43 Ticks)	4.83 ❗
Allocations - Average Allocation time (no fail)	29443.97 Ticks (±2193.45 Ticks)	6554.81 Ticks (±92.86 Ticks)	4.49 ❗
Allocations - Average Deallocation time	8513.70 Ticks (±1784.28 Ticks)	1805.01 Ticks (±250.35 Ticks)	4.72 ❗
mutex_benchmark Build Time	217.99 s	79.82 s	2.73 ❗
mutex_benchmark File Size	0.89 MB	0.86 MB	1.03 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	35.36 ns (±7.19 ns)	12.10 ns (±0.41 ns)	2.92 ❗
Mutex Stress Test Average Time per Iteration - 2 Threads	34.22 ns (±9.88 ns)	40.26 ns (±1.68 ns)	0.85

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