hypervisor: 0.849
architecture: 0.844
debug: 0.777
arm: 0.772
performance: 0.757
device: 0.753
x86: 0.713
kernel: 0.688
boot: 0.666
mistranslation: 0.622
ppc: 0.614
risc-v: 0.562
semantic: 0.554
graphic: 0.551
permissions: 0.546
network: 0.531
user-level: 0.525
vnc: 0.523
socket: 0.491
VMM: 0.485
PID: 0.475
TCG: 0.474
i386: 0.439
register: 0.411
assembly: 0.407
files: 0.406
KVM: 0.400
virtual: 0.345
peripherals: 0.244

ARMv7 LPAE: IFSR doesn't have the LPAE bit in case of BKPT

When a user application triggers a 'bkpt' instruction while LPAE is used, the bit [9] of IFSR is not correctly set during the prefetch abort exception.

You'll find attached a minimal example to reproduce the issue (just run 'make all').
The output I get is:

supervisor
user
prefetch
short-descriptor

The last entry should read 'long-descriptor'.


Qemu revision: 48ae1f60d8c9a770e6da64407984d84e25253c69
Ubuntu verison: 16.04 LTS
Cross Compiler: gcc linaro 6.3.1-2017.02-x86_64_arm-eabi



I've just sent this patchset:
http://<email address hidden>/
which should fix this bug and a couple of others that I noticed with our debug exception handling while I was doing that.


thanks Peter ! Any news on the review ?

The patches are in master now.


Hi Peter,
we tested the fix and it work correctly now, thank you very much !