Re: [Qemu-devel] [PATCH 3/4] tcg-ppc: Convert to helper_ret_ld/st_mmu

[Richard Henderson]

On 08/19/2013 12:42 PM, Paolo Bonzini wrote:
> Bad news... with this patch, either with or without patch 2, trying to execute
> sieve.flat from kvm-unit-tests (it doesn't matter if it is compiled as 32-bit
> or 64-bit, and with both i386-softmmu and x86_64-softmmu targets) fails as
> follows on my PowerBook:
> 
> qemu: fatal: Trying to execute code outside RAM or ROM at 0x70360000

Hum.  Are you sure it's anything related to the ppc backend at all?  This
test doesn't work with an x86_64 host either.

qemu: fatal: Trying to execute code outside RAM or ROM at 0x004001ba

EAX=80000011 EBX=00009500 ECX=c0000080 EDX=00000000
ESI=00000000 EDI=00542000 EBP=00000000 ESP=0044abbc
EIP=004001ba EFL=00000046 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
CS =0008 00000000 ffffffff 00cf9a00 DPL=0 CS32 [-R-]
SS =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
DS =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
FS =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
GS =0010 00000000 ffffffff 00cf9300 DPL=0 DS   [-WA]
LDT=0000 00000000 0000ffff 00008200 DPL=0 LDT
TR =0000 00000000 0000ffff 00008b00 DPL=0 TSS32-busy
GDT=     0040800a 00000447
IDT=     00000000 000003ff
CR0=80000011 CR2=00000000 CR3=00407000 CR4=00000020
DR0=00000000 DR1=00000000 DR2=00000000 DR3=00000000
DR6=ffff0ff0 DR7=00000400
CCS=00000000 CCD=00000000 CCO=SARL
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
Aborted (core dumped)

This happens after one of the writes to %cr0.  Of course, the test works with
kvm enabled, so I don't blame the test so much as the target-i386 front end...

This is not new breakage, either.  I've checked back through 1.4.0 and I can't
make it work with any version of TCG.


r~