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authorChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
committerChristian Krinitsin <mail@krinitsin.com>2025-07-03 07:27:52 +0000
commitd0c85e36e4de67af628d54e9ab577cc3fad7796a (patch)
treef8f784b0f04343b90516a338d6df81df3a85dfa2 /results/classifier/gemma3:12b/hypervisor/2977
parent7f4364274750eb8cb39a3e7493132fca1c01232e (diff)
downloadqemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.tar.gz
qemu-analysis-d0c85e36e4de67af628d54e9ab577cc3fad7796a.zip
add deepseek and gemma results
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+QEMU SVM VMCB exit_code is uint32_t when AMD spec requires uint64_t
+Description of problem:
+QEMU's SVM implementation incorrectly uses a 32-bit parameter for the exit code in the `cpu_vmexit` function, despite the AMD SVM specification requiring a 64-bit exit code field in the VMCB (Virtual Machine Control Block).
+
+I think the issue is in `target/i386/svm.c` in the `cpu_vmexit` function.
+
+The `exit_code` parameter is declared as `uint32_t` but should be `uint64_t` according to the AMD SVM specification. This causes exit codes to be truncated to 32 bits, resulting in values like 0xffff_ffff instead of the expected 0xffff_ffff_ffff_ffff.
+Steps to reproduce:
+
+Additional information:
+[this](https://stackoverflow.com/questions/79632531/qemu-svm-vmcb-exit-code-is-uint32-t-when-amd-spec-requires-uint64-t?noredirect=1#comment140448815_79632531) question I posted on stack overflow