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Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3bei
From: |
Mark Cave-Ayland |
Subject: |
Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze) |
Date: |
Fri, 19 Dec 2014 16:51:05 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.3.0 |
On 19/12/14 16:35, Peter Maydell wrote:
> On 19 December 2014 at 16:15, Mark Cave-Ayland
> <address@hidden> wrote:
>> It looks like after restoring the CPU state with loadvm env->htab_base
>> is still at 0x0 rather than its pre-migration value of 0x7e000000.
>
> Odd -- there is code that is at least trying to do that:
> machine.c calls ppc_store_sdr1() which should set htab_base/mask
> according to the migrated value of the register...
Stepping through ppc_store_sdr1() I see the problem is the if() statement:
if (env->spr[SPR_SDR1] != value) {
....
}
It looks like env->spr[SPR_SDR1] has already been set to 0x7e000000
before the call to ppc_store_sdr1() and so as the values are already
equal then the code to setup env->htab_mask and env->htab_base is bypassed.
The quick fix is to comment out the above if() statement which allows me
to restore my OpenBIOS image successfully with -loadvm but sadly not my
OS image (I guess there are probably a few more state bugs still lying
around). Does this seem the right thing to do or is there a better way?
ATB,
Mark.
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), (continued)
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Alexander Graf, 2014/12/18
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Peter Maydell, 2014/12/18
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Mark Cave-Ayland, 2014/12/18
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Alexander Graf, 2014/12/18
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Mark Cave-Ayland, 2014/12/19
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Peter Maydell, 2014/12/19
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Mark Cave-Ayland, 2014/12/19
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Peter Maydell, 2014/12/19
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Mark Cave-Ayland, 2014/12/19
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Peter Maydell, 2014/12/19
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze),
Mark Cave-Ayland <=
- Re: [Qemu-ppc] [Qemu-devel] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Alexander Graf, 2014/12/19
- Re: [Qemu-ppc] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Paolo Bonzini, 2014/12/19
- Re: [Qemu-ppc] Unable to loadvm on qemu-system-ppc -M g3beige (keyboard freeze), Alexander Graf, 2014/12/19