Re: [Qemu-devel] [PATCH v7 00/11] Fix exceptions handling for MIPS, PowerPC, and i386

[Leon Alrae]

On 15/09/2015 11:58, Aurelien Jarno wrote:
> On 2015-09-14 15:55, Richard Henderson wrote:
>> On 07/10/2015 02:56 AM, Pavel Dovgalyuk wrote:
>>> Pavel Dovgalyuk (11):
>>>       softmmu: add helper function to pass through retaddr
>>>       softmmu: remove now unused functions
>>>       cpu-exec: introduce loop exit with restore function
>>
>> These first three have been merged now.
>>
>>>       target-mips: improve exception handling
>>>       target-i386: introduce new raise_exception functions
>>>       target-i386: exception handling for FPU instructions
>>>       target-i386: exception handling for div instructions
>>>       target-i386: exception handling for memory helpers
>>>       target-i386: exception handling for seg_helper functions
>>>       target-i386: exception handling for other helper functions
>>>       target-ppc: exceptions handling in icount mode
>>
>> And I've applied the target-i386 patches to my tgt-i386-next branch.
>> They'll be merged soon.  That leaves the mips and ppc patches; I hope that
>> Leon and Alex will review these.
> 
> AFAIK Leon already started to look at the mips patch. The problem is
> that there introduced a serious performance regression in user mode:
> 
> https://lists.gnu.org/archive/html/qemu-devel/2015-08/msg01620.html

I haven't got round to trying Pavel's suggestion yet. I'll try to move it
towards the beginning of my todo list.

Leon