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Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exce
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception |
Date: |
Thu, 31 Mar 2016 08:54:20 +0200 |
User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 |
On 31.03.16 01:29, David Gibson wrote:
> On Wed, 30 Mar 2016 19:13:00 +0200
> Laurent Vivier <address@hidden> wrote:
>
>> If the processor is in little-endian mode, an alignment interrupt must
>> occur for the following instructions: lmw, stmw, lswi, lswx, stswi or stswx.
>>
>> This is what happens with KVM, so change TCG to do the same.
>>
>> As the instruction can be emulated by the kernel, enable the change
>> only in softmmu mode.
>>
>> Signed-off-by: Laurent Vivier <address@hidden>
>
> I guess this makes sense given the existing hardware behaviour, even
> though it seems a bit perverse to me to make the emulator strictly less
> functional.
>
> Alex, what do you think?
In general we only implement strict checks if it breaks guests not to
have them. Are you aware of any such case?
Alex
- [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, Laurent Vivier, 2016/03/30
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, David Gibson, 2016/03/30
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, Laurent Vivier, 2016/03/30
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception,
Alexander Graf <=
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, Laurent Vivier, 2016/03/31
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, Alexander Graf, 2016/03/31
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, Laurent Vivier, 2016/03/31
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, Thomas Huth, 2016/03/31
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, Alexander Graf, 2016/03/31
- Re: [Qemu-devel] [PATCH] target-ppc: Multiple/String Word alignment exception, Thomas Huth, 2016/03/31