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Re: [Qemu-ppc] [Qemu-devel] Bad icount read when running qemu-system-ppc
Re: [Qemu-ppc] [Qemu-devel] Bad icount read when running qemu-system-ppc64 and mfspr atbu guest instruction
Thu, 12 Apr 2018 02:37:52 +0000
Ah I see, that makes sense and the atb instructions are marked as unused in the
mainline which when I compared I recall now that we modifed them because the
guest software we are running is trying to use those special registers.
I added the wrappers into those function, is that correct?
Thanks for the help.
On 4/11/18, 4:39 PM, "Richard Henderson" <address@hidden> wrote:
On 04/12/2018 04:18 AM, Darrell Leinwand wrote:
> When I enable icount using an e5500 core I get an exit with “Bad icount
> read” when the guest software executes a load atbu command.
Yep, it looks like there are some bugs in the ppc front end wrt icount.
In target/ppc/translate_init.c, spr_read_tbu has the proper wrappers for
integrating with icount, but a few lines lower spr_read_atbl and
This will probably have to wait until the 2.13 cycle to fix...
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