MSI-X support

[cagatay-y]

cloud-hypervisor only supports MSI-X interrupts for PCI devices, so support for MSI-X is needed to support running on it. Additionally, MSI-X can allow us to set separate interrupt handlers for the configuration change interrupts and queue updates (even per-queue handlers once we have multiple queues) in the future.

[github-actions]

Benchmark Results

Benchmark	Current: f923e8b	Previous: 8a74f31	Performance Ratio
startup_benchmark Build Time	117.41 s	142.51 s	0.82
startup_benchmark File Size	0.84 MB	0.88 MB	0.96
Startup Time - 1 core	1.02 s (±0.02 s)	1.07 s (±0.04 s)	0.95
Startup Time - 2 cores	1.01 s (±0.03 s)	1.02 s (±0.03 s)	0.99
Startup Time - 4 cores	1.02 s (±0.02 s)	1.07 s (±0.03 s)	0.95
multithreaded_benchmark Build Time	116.54 s	137.41 s	0.85
multithreaded_benchmark File Size	0.98 MB	0.98 MB	1.00
Multithreaded Pi Efficiency - 2 Threads	90.18 % (±9.17 %)	86.43 % (±7.50 %)	1.04
Multithreaded Pi Efficiency - 4 Threads	44.58 % (±3.47 %)	44.23 % (±3.91 %)	1.01
Multithreaded Pi Efficiency - 8 Threads	25.58 % (±2.16 %)	25.18 % (±1.73 %)	1.02
micro_benchmarks Build Time	312.02 s	311.75 s	1.00
micro_benchmarks File Size	0.99 MB	0.98 MB	1.00
Scheduling time - 1 thread	178.89 ticks (±33.88 ticks)	176.18 ticks (±23.53 ticks)	1.02
Scheduling time - 2 threads	104.37 ticks (±16.59 ticks)	105.69 ticks (±17.31 ticks)	0.99
Micro - Time for syscall (getpid)	9.85 ticks (±5.19 ticks)	12.52 ticks (±5.92 ticks)	0.79
Memcpy speed - (built_in) block size 4096	57251.96 MByte/s (±41190.49 MByte/s)	56914.91 MByte/s (±40788.38 MByte/s)	1.01
Memcpy speed - (built_in) block size 1048576	13071.10 MByte/s (±10873.41 MByte/s)	13712.20 MByte/s (±11300.06 MByte/s)	0.95
Memcpy speed - (built_in) block size 16777216	8536.25 MByte/s (±6808.71 MByte/s)	8858.17 MByte/s (±7041.21 MByte/s)	0.96
Memset speed - (built_in) block size 4096	57760.23 MByte/s (±41498.49 MByte/s)	55901.44 MByte/s (±40515.53 MByte/s)	1.03
Memset speed - (built_in) block size 1048576	13392.14 MByte/s (±11054.64 MByte/s)	14042.11 MByte/s (±11475.79 MByte/s)	0.95
Memset speed - (built_in) block size 16777216	8738.67 MByte/s (±6933.56 MByte/s)	9051.24 MByte/s (±7149.79 MByte/s)	0.97
Memcpy speed - (rust) block size 4096	49825.61 MByte/s (±36818.00 MByte/s)	51573.52 MByte/s (±38940.33 MByte/s)	0.97
Memcpy speed - (rust) block size 1048576	12858.29 MByte/s (±10612.75 MByte/s)	13843.27 MByte/s (±11551.18 MByte/s)	0.93
Memcpy speed - (rust) block size 16777216	8548.09 MByte/s (±6863.32 MByte/s)	8820.78 MByte/s (±7022.48 MByte/s)	0.97
Memset speed - (rust) block size 4096	50313.34 MByte/s (±37160.71 MByte/s)	52449.80 MByte/s (±39554.47 MByte/s)	0.96
Memset speed - (rust) block size 1048576	13269.38 MByte/s (±10896.37 MByte/s)	14154.98 MByte/s (±11704.62 MByte/s)	0.94
Memset speed - (rust) block size 16777216	8747.76 MByte/s (±6983.48 MByte/s)	9022.40 MByte/s (±7138.82 MByte/s)	0.97
alloc_benchmarks Build Time	301.08 s	311.35 s	0.97
alloc_benchmarks File Size	0.91 MB	0.95 MB	0.96
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	25302.83 Ticks (±1604.21 Ticks)	25264.53 Ticks (±1191.38 Ticks)	1.00
Allocations - Average Allocation time (no fail)	25302.83 Ticks (±1604.21 Ticks)	25264.53 Ticks (±1191.38 Ticks)	1.00
Allocations - Average Deallocation time	2954.16 Ticks (±1180.27 Ticks)	3126.84 Ticks (±904.24 Ticks)	0.94
mutex_benchmark Build Time	306.61 s	320.40 s	0.96
mutex_benchmark File Size	0.98 MB	0.98 MB	1.00
Mutex Stress Test Average Time per Iteration - 1 Threads	39.00 ns (±4.22 ns)	38.12 ns (±4.61 ns)	1.02
Mutex Stress Test Average Time per Iteration - 2 Threads	33.08 ns (±3.35 ns)	31.08 ns (±3.58 ns)	1.06

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