x86_64 heavy crash on PPC 64 host

[luigiburdo]

this appened to me with last 2.3.0 rc 2
qemu-system-x86-64 crash , with only 2047 or 1024 -m option and -hda set

qemu: fatal: Trying to execute code outside RAM or ROM at 0x00181f9a000a0000

EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000663
ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000
EIP=0009fff3 EFL=00000046 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 00000000 0000ffff 00009300
CS =f000 00000000 0000ffff 00009b00
SS =0000 00000000 0000ffff 00009300
DS =0000 00000000 0000ffff 00009300
FS =0000 00000000 0000ffff 00009300
GS =0000 00000000 0000ffff 00009300
LDT=0000 00000000 0000ffff 00008200
TR =0000 00000000 0000ffff 00008b00
GDT= 00000000 0000ffff
IDT= 00000000 0000ffff
CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000000
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
CCS=00000000 CCD=00000000 CCO=ADDB
EFER=0000000000000000
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000
XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000
XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000
XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000
Annullato (core dump creato)

Keep a good work

My machine host
G5 Quad , radeon hd 6570 2gb , 8gb ram ...
host OS Lubuntu 14.04.2

[Thomas Huth (th-huth)]

A similar bug has been fixed already for rc3 (see http://git.qemu.org/?p=qemu.git;a=commit;h=cf811fff2ae20008f00455d0ab2212a4dea0b56f ).

Could you please:

1) Try with rc3 to see whether it still happens there

2) Check whether your qemu binary is compiled as 32-bit or 64-bit application? (running "file qemu-system-x86-64" should do the job)

[luigiburdo (intermediadc)]

Confirm the rc3 is working :)
i will check other softmmu too in this last rc.

small OT because i dont know where ask...
One day will be possible have one emulated core for every host thread like now do WinUae with qemu core?
Example: 64 power8 cpus emulate 64 x86 cpus in one virtual machine

[Thomas Huth (th-huth)]

Ok, if everything is working fine with rc3, please close this bug ticket again.

Concerning your OT question, you should better ask such stuff on one of the QEMU mailing lists (http://qemu-project.org/MailingLists). But yes, as far as I know, there's some work going on to implement this feature (see http://wiki.qemu-project.org/Features/tcg-multithread for example).