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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/KVM/1312668
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/KVM/1312668 b/results/classifier/118/KVM/1312668
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+x86: 0.970
+KVM: 0.936
+architecture: 0.931
+performance: 0.915
+hypervisor: 0.910
+kernel: 0.909
+device: 0.908
+i386: 0.907
+ppc: 0.898
+graphic: 0.873
+socket: 0.829
+register: 0.815
+files: 0.813
+risc-v: 0.810
+boot: 0.807
+VMM: 0.793
+PID: 0.787
+peripherals: 0.762
+vnc: 0.756
+mistranslation: 0.732
+virtual: 0.703
+permissions: 0.693
+arm: 0.681
+debug: 0.668
+network: 0.638
+semantic: 0.623
+user-level: 0.582
+TCG: 0.574
+assembly: 0.343
+
+x86 cpu nx feature: guest reboots  after migrate exec
+
+Using instruction on 
+http://www.linux-kvm.org/page/Migration
+I save VM state to external file and try load it, but VM starts, shows saved screen and reboots immediatly.
+
+Cmdline for vm state saving:
+
+$ sudo ./i386-softmmu/qemu-system-i386 -machine accel=kvm,kernel_irqchip=on -enable-kvm  -m 512 -hda image.raw -vga std -net none  -M pc -monitor stdio -cpu SandyBridge 
+(or  -cpu "n270" , or "kvm32,+sse2,+pae,+nx")
+
+Monitor cmd:
+(qemu) stop
+(qemu) migrate_set_speed 4095m
+(qemu) migrate "exec:gzip -c > STATEFILE.gz"  
+(qemu) q
+
+Cmdline for vm state loading:
+
+$ sudo ./i386-softmmu/qemu-system-i386 -machine accel=kvm,kernel_irqchip=on -enable-kvm  -m 512 -hda image.raw -vga std -net none  -M pc -monitor stdio -cpu SandyBridge -incoming "exec: gzip -c -d STATEFILE.gz"
+(or  -cpu "n270" , or "kvm32,+sse2,+pae,+nx")
+
+If I do the same without NX cpu feature (-cpu option "n270,-nx" / "SandyBridge,-nx" / "kvm32,+pae,+sse2") or on qemu-system-x86_64, VM save/load works correctly. 
+
+Log kvm-all.c, DEBUG_KVM=y:
+
+QEMU 2.0.0 monitor - type 'help' for more information
+(qemu) kvm_init_vcpu
+...handle_io.../...handle_mmio...
+kvm_cpu_exec()
+shutdown
+kvm_cpu_exec()
+interrupt exit requested
+io window exit
+kvm_cpu_exec()
+
+Host:
+
+ $ lsb_release -rd
+ Description:	Ubuntu 12.04.4 LTS
+ Release:	12.04
+
+ $ uname -a
+ Linux <username> 3.8.0-38-generic #56~precise1 SMP Tue Apr 22 12:46:44 MSK 2014 x86_64 x86_64 x86_64 GNU/Linux
+
+Guest:
+ 1. Ubuntu 12.04 32bit 
+ 2. WIndows 8 32bit
+
+Qemu: v2.0.0
+commit a9e8aeb3755bccb7b51174adcf4a3fc427e0d147
+Author: Peter Maydell <email address hidden>
+Date:   Thu Apr 17 13:41:45 2014 +0100
+
+Looking through old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays?
+
+[Expired for QEMU because there has been no activity for 60 days.]
+