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authorChristian Krinitsin <mail@krinitsin.com>2025-06-16 16:59:00 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-06-16 16:59:33 +0000
commit9aba81d8eb048db908c94a3c40c25a5fde0caee6 (patch)
treeb765e7fb5e9a3c2143c68b0414e0055adb70e785 /results/classifier/118/arm/2665
parentb89a938452613061c0f1f23e710281cf5c83cb29 (diff)
downloadqemu-analysis-9aba81d8eb048db908c94a3c40c25a5fde0caee6.tar.gz
qemu-analysis-9aba81d8eb048db908c94a3c40c25a5fde0caee6.zip
add 18th iteration of classifier
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diff --git a/results/classifier/118/arm/2665 b/results/classifier/118/arm/2665
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+arm: 0.884
+device: 0.821
+hypervisor: 0.771
+architecture: 0.758
+graphic: 0.749
+boot: 0.642
+semantic: 0.639
+mistranslation: 0.622
+performance: 0.543
+i386: 0.426
+vnc: 0.407
+debug: 0.392
+VMM: 0.364
+ppc: 0.364
+PID: 0.362
+files: 0.341
+register: 0.329
+user-level: 0.327
+virtual: 0.320
+x86: 0.311
+socket: 0.309
+network: 0.307
+peripherals: 0.272
+permissions: 0.231
+risc-v: 0.222
+assembly: 0.220
+KVM: 0.219
+kernel: 0.207
+TCG: 0.142
+
+target/arm: cannot boot when CPU supports SME
+Description of problem:
+On macOS 15.2 beta, Apple's Hypervisor.framework exposes the SME feat flag to QEMU. As a result, in `arm_cpu_sme_finalize`, `cpu_isar_feature(aa64_sme, cpu)` returns true and the program will always exit with the following:
+
+```
+qemu-aarch64-softmmu: cannot disable sme4224
+All SME vector lengths are disabled.
+With SME enabled, at least one vector length must be enabled.
+```
+
+This is because `vq_supported` and `vq_init` are both 0 as they are not initialized anywhere. It seems that in the original commit e74c097638d38b46d9c68f11565432034afc0ad0 the only place `cpu->sme_vq.supported` is initialized is with `aarch64_max_initfn` when KVM and HVF are not used as the backend.