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ci: enable virtualization HWE stack - #2606

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ci-qemu-hwe
Aug 4, 2026
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ci: enable virtualization HWE stack#2606
mkroening merged 1 commit into
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ci-qemu-hwe

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Ubuntu has announced to provide more recent QEMU versions to the LTS versions of Ubuntu:

While qemu-hwe is still on the same version as qemu at the moment, upgrading to QEMU 11 would allow us to enable semihosting on aarch64_be.

Depends on:

@mkroening mkroening self-assigned this Aug 4, 2026
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mkroening marked this pull request as ready for review August 4, 2026 09:26
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mkroening requested a review from Gelbpunkt August 4, 2026 09:26

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If we see any issues with the newer QEMU releases we will hopefully be able to fix them quickly and I believe those are going to occur very rarely if ever

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mkroening enabled auto-merge August 4, 2026 09:30

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Benchmark Results

Details
Benchmark Current: 8b279c2 Previous: 2e23902 Performance Ratio
startup_benchmark Build Time 80.32 s 80.34 s 1.00
startup_benchmark File Size 0.76 MB 0.80 MB 0.96
Startup Time - 1 core 0.76 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) 1.04
Startup Time - 4 cores 0.76 s (±0.01 s) 0.74 s (±0.02 s) 1.03
multithreaded_benchmark Build Time 80.88 s 82.11 s 0.99
multithreaded_benchmark File Size 0.87 MB 0.86 MB 1.02
Multithreaded Pi Efficiency - 2 Threads 91.25 % (±7.19 %) 85.89 % (±6.61 %) 1.06
Multithreaded Pi Efficiency - 4 Threads 44.79 % (±3.26 %) 43.43 % (±2.56 %) 1.03
Multithreaded Pi Efficiency - 8 Threads 25.82 % (±1.44 %) 25.76 % (±1.53 %) 1.00
micro_benchmarks Build Time 78.45 s 80.40 s 0.98
micro_benchmarks File Size 0.88 MB 0.86 MB 1.02
Scheduling time - 1 thread 63.44 ticks (±1.39 ticks) 62.65 ticks (±4.06 ticks) 1.01
Scheduling time - 2 threads 36.29 ticks (±4.55 ticks) 34.08 ticks (±4.10 ticks) 1.06
Micro - Time for syscall (getpid) 4.37 ticks (±0.93 ticks) 3.45 ticks (±0.58 ticks) 1.27
Memcpy speed - (built_in) block size 4096 83701.86 MByte/s (±57868.45 MByte/s) 82448.38 MByte/s (±56997.13 MByte/s) 1.02
Memcpy speed - (built_in) block size 1048576 30328.56 MByte/s (±24441.24 MByte/s) 30585.98 MByte/s (±24707.84 MByte/s) 0.99
Memcpy speed - (built_in) block size 16777216 29201.22 MByte/s (±23981.19 MByte/s) 26340.06 MByte/s (±21720.96 MByte/s) 1.11
Memset speed - (built_in) block size 4096 83841.37 MByte/s (±57972.73 MByte/s) 82292.76 MByte/s (±56891.50 MByte/s) 1.02
Memset speed - (built_in) block size 1048576 31035.18 MByte/s (±24860.15 MByte/s) 31323.85 MByte/s (±25145.86 MByte/s) 0.99
Memset speed - (built_in) block size 16777216 29961.77 MByte/s (±24419.77 MByte/s) 27104.68 MByte/s (±22209.94 MByte/s) 1.11
Memcpy speed - (rust) block size 4096 76405.22 MByte/s (±53203.73 MByte/s) 74097.96 MByte/s (±51811.44 MByte/s) 1.03
Memcpy speed - (rust) block size 1048576 30362.38 MByte/s (±24500.61 MByte/s) 30361.60 MByte/s (±24602.37 MByte/s) 1.00
Memcpy speed - (rust) block size 16777216 29344.17 MByte/s (±24115.57 MByte/s) 27625.34 MByte/s (±22806.88 MByte/s) 1.06
Memset speed - (rust) block size 4096 76839.61 MByte/s (±53510.32 MByte/s) 74373.47 MByte/s (±51976.48 MByte/s) 1.03
Memset speed - (rust) block size 1048576 31100.44 MByte/s (±24933.25 MByte/s) 31110.89 MByte/s (±25033.24 MByte/s) 1.00
Memset speed - (rust) block size 16777216 30101.88 MByte/s (±24550.46 MByte/s) 28386.93 MByte/s (±23265.03 MByte/s) 1.06
alloc_benchmarks Build Time 77.45 s 74.76 s 1.04
alloc_benchmarks File Size 0.84 MB 0.87 MB 0.96
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 2523.93 Ticks (±733.77 Ticks) 5860.58 Ticks (±98.43 Ticks) 0.43
Allocations - Average Allocation time (no fail) 3583.49 Ticks (±646.10 Ticks) 6554.81 Ticks (±92.86 Ticks) 0.55
Allocations - Average Deallocation time 678.23 Ticks (±122.35 Ticks) 1805.01 Ticks (±250.35 Ticks) 0.38
mutex_benchmark Build Time 81.12 s 79.82 s 1.02
mutex_benchmark File Size 0.88 MB 0.86 MB 1.02
Mutex Stress Test Average Time per Iteration - 1 Threads 12.20 ns (±0.53 ns) 12.10 ns (±0.41 ns) 1.01
Mutex Stress Test Average Time per Iteration - 2 Threads 39.98 ns (±2.27 ns) 40.26 ns (±1.68 ns) 0.99

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

@mkroening
mkroening added this pull request to the merge queue Aug 4, 2026
Merged via the queue into main with commit d0854f9 Aug 4, 2026
23 checks passed
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2 participants