Hi Oliver,
Sorry for the missing information. I am using version 7.1.63 of the A15 fast model. I'm using the ArmVExpress-RTSM-A15_MPCore.dsc dsc file,and building against the linaro-tracking-2013.05 branch of the uefi-next repository. I have been making some changes, mostly debug related.
I had made the following changes to the DSC file: gArmPlatformTokenSpaceGuid.PcdCoreCount|1 gArmPlatformTokenSpaceGuid.PcdSendSgiToBringUpSecondaryCores|FALSE
This was running fine on a single core until I started removing some debug prints.
Roy
On 12 June 2013 02:10, Olivier Martin olivier.martin@arm.com wrote:
Hello Roy,****
Which platform are you referring to? Which EDK2 DSC file are you using for your UEFI firmware?****
Thanks,****
Olivier****
*From:* boot-architecture-bounces@lists.linaro.org [mailto: boot-architecture-bounces@lists.linaro.org] *On Behalf Of *Roy Franz *Sent:* 12 June 2013 03:03 *To:* boot-architecture@lists.linaro.org *Subject:* Possible race condition in multi-core EDK2****
I've been working with the DEBUG build of EDK2, and thought I had changed the configuration to be 'proper' for a single core, and it ran fine on a single core simulation. As I started removing debug prints, I started getting simulator seg faults. I confirmed that the difference between running and crashing versions were simply debug prints.****
Changing the simulation to simulator 2 cores resolved the problem. I suspect that there may be a race condition or some other multi-core detection bug that causes this crash.****
I don't plan to investigate this further at this point - just wanted to report this as I was surprised to find that a debug print being removed would cause the simulator to crash.****
Roy****
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