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Re: [Qemu-ppc] G2leGP3 CPU hangs after ITLB miss

From: Williams, Brandon R
Subject: Re: [Qemu-ppc] G2leGP3 CPU hangs after ITLB miss
Date: Tue, 10 Jun 2014 19:25:13 +0000

-----Original Message-----
From: Alexander Graf [mailto:address@hidden 
Sent: Thursday, June 05, 2014 5:53 PM
To: Williams, Brandon R; address@hidden
Subject: Re: [Qemu-ppc] G2leGP3 CPU hangs after ITLB miss

On 05.06.14 21:17, Williams, Brandon R wrote:
> When I start qemu-system-ppc with "-cpu G2leGP3", I get an ITLB miss 
> exception interrupt but it never seems to return from it. helper_rfi 
> and do_rfi are never called. Does anyone have any suggestions?

Congratulations, you're probably the first person running this CPU type 
in half a decade ;).

That said, what does -d in_asm,cpu,int tell you?


It appears as though the problem starts in mmu_helper.c in the 
get_physical_address function.  The first time that the real_mode flag is true 
(address translation is turned on), it fails to find a BAT entry and returns 
-1, which throws this exception that never seems to return.

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