Re: [Qemu-devel] [RFC PATCH v5 00/31] Deterministic replay and reverse execution

[Artyom Tarasenko]

On Thu, Nov 27, 2014 at 6:45 PM, Paolo Bonzini <address@hidden> wrote:
>
>
> On 27/11/2014 10:53, Artyom Tarasenko wrote:
>>> >
>>> > Deterministic replay has the following features:
>>> >  * Deterministically replays whole system execution and all contents of 
>>> > the memory,
>>> >    state of the hadrware devices, clocks, and screen of the VM.
>>> >  * Writes execution log into the file for latter replaying for multiple 
>>> > times
>>> >    on different machines.
>>> >  * Supports i386, x86_64, and ARM hardware platforms.
>> This patch series is really impressive, hats off!
>>
>> I wonder what would have to be done to add support for SPARC-64? Since
>> has a PCI bus, I guess the support in atapi and usb devices is already
>> there. Is anything beyond translate.c has to be adjusted?
>
> Does -icount work reliably on SPARC?

No. Currently using -icount 1 or -icount 2 is reliably producing the
"Bad clock read"  message, and using -icount 20
reliably crashes qemu with the "qemu: fatal: Raised interrupt while
not in I/O function" message.
So, I guess I see the starting point...

Artyom

-- 
Regards,
Artyom Tarasenko

SPARC and PPC PReP under qemu blog: http://tyom.blogspot.com/search/label/qemu