Public bug reported: Using any Linux image (in this case Alpine Linux iso) I want to utilise all cores of my Raspberry with --accel,thread=multi. I know there is a probably still problem with memory ordering of the host, but I have also seen some very old commits which could potentially help with it.
But anyway, with version qemu-i386 version 3.1.0 (Debian 1:3.1+dfsg-7) I can see OpenRC starting up services and then the kernel crash. With version QEMU emulator version 3.1.93 (v4.0.0-rc3-dirty) The whole machine crash with this error: Illegal instruction Using command: ./qemu-system-i386 -cdrom alpine.iso --accel tcg,thread=multi Full Console Output: qemu-system-i386: warning: Guest expects a stronger memory ordering than the host provides This may cause strange/hard to debug errors Illegal instruction Kernel: Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/Linux CPU: ARMv7 Processor rev 5 (v7l) Features: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm 4 cores ** Affects: qemu Importance: Undecided Status: New ** Tags: multithreading raspberry tcg ** Description changed: - Using any Linux image (in this case Alpine Linux iso) and want to use + Using any Linux image (in this case Alpine Linux iso) I want to utilise all cores of my Raspberry with --accel,thread=multi. I know there is a - probably still problem with memory ordering of the host but I have also + probably still problem with memory ordering of the host, but I have also seen some very old commits which could potentially help with it. But anyway, with version qemu-i386 version 3.1.0 (Debian 1:3.1+dfsg-7) I can see OpenRC starting up services and then the kernel crash. With version QEMU emulator version 3.1.93 (v4.0.0-rc3-dirty) - The whole machine crash with this error: + The whole machine crash with this error: Illegal instruction - Using command: ./qemu-system-i386 -cdrom alpine.iso --accel tcg,thread=multi Full Console Output: qemu-system-i386: warning: Guest expects a stronger memory ordering than the host provides This may cause strange/hard to debug errors Illegal instruction - Kernel: Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/Linux CPU: ARMv7 Processor rev 5 (v7l) - Features: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm + Features: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm 4 cores ** Summary changed: - Qemu ARMv7 TCG MultiThreading doesn't work + Qemu ARMv7 TCG MultiThreading for i386 guest doesn't work -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1824768 Title: Qemu ARMv7 TCG MultiThreading for i386 guest doesn't work Status in QEMU: New Bug description: Using any Linux image (in this case Alpine Linux iso) I want to utilise all cores of my Raspberry with --accel,thread=multi. I know there is a probably still problem with memory ordering of the host, but I have also seen some very old commits which could potentially help with it. But anyway, with version qemu-i386 version 3.1.0 (Debian 1:3.1+dfsg-7) I can see OpenRC starting up services and then the kernel crash. With version QEMU emulator version 3.1.93 (v4.0.0-rc3-dirty) The whole machine crash with this error: Illegal instruction Using command: ./qemu-system-i386 -cdrom alpine.iso --accel tcg,thread=multi Full Console Output: qemu-system-i386: warning: Guest expects a stronger memory ordering than the host provides This may cause strange/hard to debug errors Illegal instruction Kernel: Linux raspberrypi 4.14.98-v7+ #1200 SMP Tue Feb 12 20:27:48 GMT 2019 armv7l GNU/Linux CPU: ARMv7 Processor rev 5 (v7l) Features: half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm 4 cores To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1824768/+subscriptions