diff options
Diffstat (limited to 'results/classifier/108/other/2894')
| -rw-r--r-- | results/classifier/108/other/2894 | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/results/classifier/108/other/2894 b/results/classifier/108/other/2894 new file mode 100644 index 00000000..4fb09b81 --- /dev/null +++ b/results/classifier/108/other/2894 @@ -0,0 +1,40 @@ +permissions: 0.906 +device: 0.895 +other: 0.883 +network: 0.870 +files: 0.865 +graphic: 0.856 +semantic: 0.851 +boot: 0.850 +performance: 0.839 +KVM: 0.814 +socket: 0.809 +debug: 0.808 +PID: 0.796 +vnc: 0.737 + +There is a bug in versions 2025-02-10 and later that causes virtual machines to be created with incorrect SMP settings with warnings about TCG features when setting more than 2 cores with the smp option in the default TCG acceleration (see main text). +Description of problem: +When using qemu-system-x86_64 in versions 9.2.50 and later, if you create a virtual machine with 2 or more cores using the smp option, + +``` +qemu-system-x86_64: warning: TCG doesn't support requested feature: CPUID.01H:EDX.ht [bit 28] +qemu-system-x86_64: warning: TCG doesn't support requested feature: CPUID.80000001H:ECX.cmp-legacy [bit 1] +``` +The log will be displayed as many as the number of cores you have enabled, and the created virtual machine will be displayed as having a 1-core CPU with the number of cores you have enabled. +* I have not tested whether the same symptom occurs on versions 9.2.50 and later for other environments (Linux and the WoA version released on March 26th). +Steps to reproduce: +1. Create a virtual machine with more than two cores using TCG acceleration, which is the default acceleration, by using options such as 'qemu-system-x86_64 -smp 2' or 'qemu-system-x86_64 -smp sockets=1,cores=2,threads=1'. +2. 'qemu-system-x86_64: warning: TCG doesn't support requested feature: CPUID.01H:EDX.ht [bit 28]' and +'qemu-system-x86_64: warning: TCG doesn't support requested feature: CPUID.80000001H:ECX.cmp-legacy [bit 1]' +The log is generated as many as the number of cores set and the virtual machine is created. +3. When checking the CPU information of the booted virtual machine, it does not show that there is one CPU with the specified number of cores, but rather that there is a single core CPU with the specified number of cores. +Additional information: +``` +>qemu-system-x86_64 -M q35 -smp 2 -m 4g -display sdl -usb -device usb-tablet -drive file=MasterOS.vdi,id=disk,if=none -drive file="C:\Program Files\qemu\share\edk2-x86_64-code.fd",id=efi,readonly=on,format=raw,if=pflash -device ahci,id=ahci -device ide-hd,drive=disk,bus=ahci.1 -rtc base=localtime +``` + +``` +>qemu-system-x86_64 -M q35 -smp 4 -m 4g -display sdl -usb -device usb-tablet -drive file=MasterOS.vdi,id=disk,if=none -drive file="C:\Program Files\qemu\share\edk2-x86_64-code.fd",id=efi,readonly=on,format=raw,if=pflash -device ahci,id=ahci -device ide-hd,drive=disk,bus=ahci.1 -rtc base=localtime +``` + |